Implement complete lifecycle transition for IdleSpellCheckCallback

third_party/WebKit/Source/core/editing/spellcheck/IdleSpellCheckCallbackTest.cpp

+// Copyright 2017 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/spellcheck/IdleSpellCheckCallback.h"
+
+#include "core/editing/spellcheck/SpellCheckTestBase.h"
+#include "core/editing/spellcheck/SpellChecker.h"
+#include "core/frame/LocalFrame.h"
+#include "platform/RuntimeEnabledFeatures.h"
+
+namespace blink {
+
+using State = IdleSpellCheckCallback::State;
+
+class IdleSpellCheckCallbackTest : public SpellCheckTestBase {
+ protected:
+  IdleSpellCheckCallback& idleChecker() {
+    return frame().spellChecker().idleSpellCheckCallback();
+  }
+
+  void SetUp() override {
+    SpellCheckTestBase::SetUp();
+    if (!RuntimeEnabledFeatures::idleTimeSpellCheckingEnabled())
+      idleChecker().documentAttached(frame().document());
+  }
+
+  void transitTo(State state) {
+    switch (state) {
+      case State::kInactive:
+        idleChecker().deactivate();
+        break;
+      case State::kHotModeRequested:
+        idleChecker().setNeedsInvocation();
+        break;
+      case State::kColdModeTimerStarted:
+        break;
+      case State::kColdModeRequested:
+        idleChecker().skipColdModeTimerForTesting();
+        break;
+      default:

[tkent, 2017/02/26 20:35:58]

Do not use |default:| in |switch| for an enum.  Please write down all of
remaining items.

+        NOTREACHED();
+    }
+  }
+};
+
+// Test cases for lifecycle state transitions.
+
+TEST_F(IdleSpellCheckCallbackTest, Initialization) {
+  EXPECT_EQ(State::kColdModeTimerStarted, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, RequestWhenInactive) {
+  transitTo(State::kInactive);
+  idleChecker().setNeedsInvocation();
+  EXPECT_EQ(State::kHotModeRequested, idleChecker().state());
+  EXPECT_NE(-1, idleChecker().idleCallbackHandle());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, RequestWhenHotModeRequested) {
+  transitTo(State::kHotModeRequested);
+  int handle = idleChecker().idleCallbackHandle();
+  idleChecker().setNeedsInvocation();
+  EXPECT_EQ(State::kHotModeRequested, idleChecker().state());
+  EXPECT_EQ(handle, idleChecker().idleCallbackHandle());
+  EXPECT_NE(-1, idleChecker().idleCallbackHandle());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, RequestWhenColdModeTimerStarted) {
+  transitTo(State::kColdModeTimerStarted);
+  idleChecker().setNeedsInvocation();
+  EXPECT_EQ(State::kHotModeRequested, idleChecker().state());
+  EXPECT_NE(-1, idleChecker().idleCallbackHandle());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, RequestWhenColdModeRequested) {
+  transitTo(State::kColdModeRequested);
+  int handle = idleChecker().idleCallbackHandle();
+  idleChecker().setNeedsInvocation();
+  EXPECT_EQ(State::kHotModeRequested, idleChecker().state());
+  EXPECT_EQ(handle, idleChecker().idleCallbackHandle());
+  EXPECT_NE(-1, idleChecker().idleCallbackHandle());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, HotModeTransitToColdMode) {
+  transitTo(State::kHotModeRequested);
+  idleChecker().forceInvocationForTesting();
+  EXPECT_EQ(State::kColdModeTimerStarted, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, ColdModeTimerStartedToRequested) {
+  transitTo(State::kColdModeTimerStarted);
+  idleChecker().skipColdModeTimerForTesting();
+  EXPECT_EQ(State::kColdModeRequested, idleChecker().state());
+  EXPECT_NE(-1, idleChecker().idleCallbackHandle());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, ColdModeStayAtColdMode) {
+  transitTo(State::kColdModeRequested);
+  idleChecker().setNeedsMoreColdModeInvocationForTesting();
+  idleChecker().forceInvocationForTesting();
+  EXPECT_EQ(State::kColdModeTimerStarted, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, ColdModeToInactive) {
+  transitTo(State::kColdModeRequested);
+  idleChecker().forceInvocationForTesting();
+  EXPECT_EQ(State::kInactive, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, DetachWhenInactive) {
+  transitTo(State::kInactive);
+  document().shutdown();
+  EXPECT_EQ(State::kInactive, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, DetachWhenHotModeRequested) {
+  transitTo(State::kHotModeRequested);
+  document().shutdown();
+  EXPECT_EQ(State::kInactive, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, DetachWhenColdModeTimerStarted) {
+  transitTo(State::kColdModeTimerStarted);
+  document().shutdown();
+  EXPECT_EQ(State::kInactive, idleChecker().state());
+}
+
+TEST_F(IdleSpellCheckCallbackTest, DetachWhenColdModeRequested) {
+  transitTo(State::kColdModeRequested);
+  document().shutdown();
+  EXPECT_EQ(State::kInactive, idleChecker().state());
+}
+
+}  // namespace blink