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Unified Diff: third_party/WebKit/Source/core/editing/state_machines/ForwardGraphemeBoundaryStateMachineTest.cpp

Issue 1833413002: [All-in-one patch] Implement own grapheme boundary breaker for editing. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Upload All-in-one patch Created 4 years, 9 months ago
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Index: third_party/WebKit/Source/core/editing/state_machines/ForwardGraphemeBoundaryStateMachineTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/state_machines/ForwardGraphemeBoundaryStateMachineTest.cpp b/third_party/WebKit/Source/core/editing/state_machines/ForwardGraphemeBoundaryStateMachineTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..76b22aefbd70ed61420eae95a09c90c5813256bb
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/state_machines/ForwardGraphemeBoundaryStateMachineTest.cpp
@@ -0,0 +1,2428 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/editing/state_machines/ForwardGraphemeBoundaryStateMachine.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+namespace {
+const TextSegmentationMachineState kNeedMoreCodeUnit
+ = TextSegmentationMachineState::NeedMoreCodeUnit;
+const TextSegmentationMachineState kFinished
+ = TextSegmentationMachineState::Finished;
+const TextSegmentationMachineState kNeedFollowingCodeUnit
+ = TextSegmentationMachineState::NeedFollowingCodeUnit;
+
+// U+1F1FA (REGIONAL INDICATOR SYMBOL LETTER U) is \uD83C\uDDFA in UTF16.
+const UChar kRisULead = 0xD83C;
+const UChar kRisUTrail = 0xDDFA;
+
+// U+1F1F8 (REGIONAL INDICATOR SYMBOL LETTER S) is \uD83C\uDDF8 in UTF16.
+const UChar kRisSLead = 0xD83C;
+const UChar kRisSTrail = 0xDDF8;
+
+// U+1F466 (BOY) is \uD83D\uDC66 in UTF16.
+const UChar kBoyLead = 0xD83D;
+const UChar kBoyTrail = 0xDC66;
+
+// U+E0100 (VARIATION SELECTOR 17) is \uD840\uDD00 in UTF16.
+const UChar kVS17Lead = 0xDB40;
+const UChar kVS17Trail = 0xDD00;
+
+// U+FE0F is VARIATION SELECTOR 16.
+const UChar kVS16 = 0xFE0F;
+
+// U+231A is WATCH.
+const UChar kWatch = 0x231A;
+
+// U+1F441 (EYE) is \uD83D\uDC41 in UTF16.
+const UChar kEyeLead = 0xD83D;
+const UChar kEyeTrail = 0xDC41;
+
+// U+3402 can be a base of U+E0100 (VARIATION SELECTOR 17).
+const UChar kHan = 0x3402;
+
+// U+2000B is \uD840\uDC0B in UTF16.
+// U+2000B can be a base of U+E0100 (VARIATION SELECTOR 17).
+const UChar kHanLead = 0xD840;
+const UChar kHanTrail = 0xDC0B;
+} // namespace
+
+// Notations:
+// | indicates inidicates initial offset position.
+// SOT indicates start of text.
+// EOT indicates end of text.
+// [Lead] indicates broken lonely lead surrogate.
+// [Trail] indicates broken lonely trail surrogate.
+// [U] indicates regional indicator symbol U.
+// [S] indicates regional indicator symbol S.
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, DoNothingCase)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ EXPECT_EQ(0, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(0, machine.finalizeAndGetBoundaryOffset());
+}
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, BrokenSurrogatePair)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // U+1F5FA(WORLD MAP) is \uD83D\uDDFA in UTF-16.
+ const UChar lead = 0xD83D;
+ const UChar trail = 0xDDFA;
+
+ // 'a' + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+}
+
+TEST(ForwardGraphemeBoundaryStatemachineTest,
+ BrokenSurrogatePair_WithPrecedingRIS)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // U+1F5FA(WORLD MAP) is \uD83D\uDDFA in UTF-16.
+ const UChar lead = 0xD83D;
+ const UChar trail = 0xDDFA;
+
+ // 'a' + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + | + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(trail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + | + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + | + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + | + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(trail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(lead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+}
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, BreakImmediately)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // SOT + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // TODO(nona): Nice to add broken surrogate preceding surrogate case.
+}
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, BreakImmediately_withPrecedingRIS)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // SOT + [U] + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + U+1F466
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + 'a' + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(1, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + | + U+1F466 + [Lead] + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // TODO(nona): Nice to add preceding broken surrogate case.
+}
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, NotBreakImmediatelyAfter)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // SOT + | + U+231A + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+231A + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+231A + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+231A + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+231A + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+231A + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+1F441 + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+3402 + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + | + U+2000B + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+231A + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+1F441 + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+3402 + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + | + U+2000B + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+231A + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kWatch));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+1F441 + U+FE0F + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kEyeTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS16));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+3402 + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHan));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(3, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + EOT
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + [Trail]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + [Lead] + 'a'
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + [Lead] + [Lead]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + | + U+2000B + U+E0100 + [Lead] + [EOT]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kHanTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Lead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kVS17Trail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kBoyLead));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // Much longer case.
+ // U+1F469 U+200D U+2764 U+FE0F U+200D U+1F48B U+200D U+1F468 is a valid
+ // ZWJ emoji sequence. Following sequence is corresponding to this ZWJ emoji
+ // sequence.
+ machine.reset();
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xD83D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xDC69));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0x200D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0x2764));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xFE0F));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0x200D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xD83D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xDC8B));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0x200D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xD83D));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(0xDC68));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit('a'));
+ EXPECT_EQ(11, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(11, machine.finalizeAndGetBoundaryOffset());
+
+ // TODO(nona): Nice to add preceding broken surrogate case.
+}
+
+// TODO(nona): Nice to add NotBreakingImmediatelyBefore_withPrecedingRIS case.
+
+TEST(ForwardGraphemeBoundaryStatemachineTest, Flags)
+{
+ ForwardGraphemeBoundaryStateMachine machine;
+
+ // SOT + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ // [Trail] + [Trail] + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + [S] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(4, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // U+1F466 + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // [Lead] + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // 'a' + [Trail] + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit('a'));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // [Trail] + [Trail] + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+
+ // SOT + [Trail] + [U] + [S] + [U] + | + [U] + [S]
+ machine.reset();
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisSLead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedPrecedingCodeUnit(kBoyTrail));
+ EXPECT_EQ(kNeedFollowingCodeUnit, machine.tellEndOfPrecedingText());
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisULead));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisUTrail));
+ EXPECT_EQ(kNeedMoreCodeUnit, machine.feedFollowingCodeUnit(kRisSLead));
+ EXPECT_EQ(kFinished, machine.feedFollowingCodeUnit(kRisSTrail));
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+ EXPECT_EQ(2, machine.finalizeAndGetBoundaryOffset());
+}
+
+} // namespace blink
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