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Unified Diff: third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp

Issue 1833653002: Move LayoutObject::nextOffset/previousOffset() to editing utility (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: added test cases. Created 4 years, 9 months ago
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Index: third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp b/third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp
index eb1a159bfc277f5004eb96f0e28b6292c947db53..4a04eeb8161b5e569953f66a124d3e1721fdbe16 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingUtilitiesTest.cpp
@@ -200,4 +200,446 @@ TEST_F(EditingUtilitiesTest, AreaIdenticalElements)
EXPECT_TRUE(areIdenticalElements(*items->item(1), *items->item(3)));
}
+TEST_F(EditingUtilitiesTest, uncheckedPreviousNextOffset_FirstLetter)
+{
+ setBodyContent("<style>p::first-letter {color:red;}</style><p id='target'>abc</p>");
+ Node* node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ updateLayoutAndStyleForPainting();
+ EXPECT_NE(nullptr, node->layoutObject());
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+}
+
+TEST_F(EditingUtilitiesTest, uncheckedPreviousNextOffset_textTransform)
+{
+ setBodyContent("<style>p {text-transform:uppercase}</style><p id='target'>abc</p>");
+ Node* node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ updateLayoutAndStyleForPainting();
+ EXPECT_NE(nullptr, node->layoutObject());
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+}
+
+// Following breaking rules come from http://unicode.org/reports/tr29/
+// Note that some of rules are in draft. Also see
+// http://www.unicode.org/reports/tr29/proposed.html
+TEST_F(EditingUtilitiesTest, uncheckedPreviousNextOffset)
+{
+ // GB1: Break at the start of text.
+ setBodyContent("<p id='target'>a</p>");
+ Node* node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+
+ // GB2: Break at the end of text.
+ setBodyContent("<p id='target'>a</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+
+ // GB3: Do not break between CR and LF.
+ setBodyContent("<p id='target'>a&#x0D;&#x0A;b</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ // TODO(nona) : Enable following expectation.
+ // EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // TODO(nona) : Enable following expectation.
+ // EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+
+ // GB4,GB5: Break before and after CR/LF/Control.
+ setBodyContent("<p id='target'>a&#x0D;b</p>"); // CR
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+ setBodyContent("<p id='target'>a&#x0A;b</p>"); // LF
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+ setBodyContent("<p id='target'>a&#xAD;b</p>"); // U+00AD(SOFT HYPHEN) has Control property.
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ // GB6: Don't break Hangul sequence.
+ const std::string L = "&#x1100;"; // U+1100 (HANGUL CHOSEONG KIYEOK) has L property.
+ const std::string V = "&#x1160;"; // U+1160 (HANGUL JUNGSEONG FILLER) has V property.
+ const std::string LV = "&#xAC00;"; // U+AC00 (HANGUL SYLLABLE GA) has LV property.
+ const std::string LVT = "&#xAC01;"; // U+AC01 (HANGUL SYLLABLE GAG) has LVT property.
+ const std::string T = "&#x11A8;"; // U+11A8 (HANGUL JONGSEONG KIYEOK) has T property.
+ setBodyContent("<p id='target'>a" + L + L + "b</p>"); // L x L
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + L + V +"b</p>"); // L x V
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + L + LV + "b</p>"); // L x LV
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + L + LVT + "b</p>"); // L x LVT
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+
+ // GB7: Don't break Hangul sequence.
+ setBodyContent("<p id='target'>a" + LV + V + "b</p>"); // LV x V
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + LV + T + "b</p>"); // LV x T
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + V + V + "b</p>"); // V x V
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + V + T + "b</p>"); // V x T
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+
+ // GB8: Don't break Hangul sequence.
+ setBodyContent("<p id='target'>a" + LVT + T + "b</p>"); // LVT x T
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a" + T + T + "b</p>"); // T x T
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+
+ // Break other Hangul syllable combination. See test of GB999.
+
+ // GB8a: Don't break between regional indicator if there are even numbered regional indicator symbols before.
+ // U+1F1FA is REGIONAL INDICATOR SYMBOL LETTER U.
+ // U+1F1F8 is REGIONAL INDICATOR SYMBOL LETTER S.
+ const std::string flag = "&#x1F1FA;&#x1F1F8;"; // US flag.
+ setBodyContent("<p id='target'>" + flag + flag + flag + flag + "a</p>"); // ^(RI RI)* RI x RI
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(16, uncheckedPreviousOffset(node, 17));
+ EXPECT_EQ(12, uncheckedPreviousOffset(node, 16));
+ // TODO(nona): Enable following expectations.
+ // EXPECT_EQ(8, uncheckedPreviousOffset(node, 12));
+ // EXPECT_EQ(4, uncheckedPreviousOffset(node, 8));
+ // EXPECT_EQ(0, uncheckedPreviousOffset(node, 4));
+ // EXPECT_EQ(4, uncheckedNextOffset(node, 0));
+ // EXPECT_EQ(8, uncheckedNextOffset(node, 4));
+ EXPECT_EQ(12, uncheckedNextOffset(node, 8));
+ EXPECT_EQ(16, uncheckedNextOffset(node, 12));
+ EXPECT_EQ(17, uncheckedNextOffset(node, 16));
+
+ // GB8c: Don't break between regional indicator if there are even numbered regional indicator symbols before.
+ setBodyContent("<p id='target'>a" + flag + flag + flag + flag + "b</p>"); // [^RI] (RI RI)* RI x RI
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(17, uncheckedPreviousOffset(node, 18));
+ EXPECT_EQ(13, uncheckedPreviousOffset(node, 17));
+ // TODO(nona): Enable following expectations.
+ // EXPECT_EQ(9, uncheckedPreviousOffset(node, 13));
+ // EXPECT_EQ(5, uncheckedPreviousOffset(node, 9));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // TODO(nona): Enable following expectations.
+ // EXPECT_EQ(5, uncheckedNextOffset(node, 1));
+ // EXPECT_EQ(9, uncheckedNextOffset(node, 5));
+ EXPECT_EQ(13, uncheckedNextOffset(node, 9));
+ EXPECT_EQ(17, uncheckedNextOffset(node, 13));
+ EXPECT_EQ(18, uncheckedNextOffset(node, 17));
+
+ // GB8c: Break if there is an odd number of regional indicator symbols before.
+ setBodyContent("<p id='target'>a" + flag + flag + flag + flag + "&#x1F1F8;b</p>"); // RI รท RI
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(19, uncheckedPreviousOffset(node, 20));
+ // TODO(nona): Enable following expectations.
+ // EXPECT_EQ(17, uncheckedPreviousOffset(node, 19));
+ // EXPECT_EQ(13, uncheckedPreviousOffset(node, 17));
+ // EXPECT_EQ(9, uncheckedPreviousOffset(node, 13));
+ // EXPECT_EQ(5, uncheckedPreviousOffset(node, 9));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // TODO(nona): Enable following expectations.
+ // EXPECT_EQ(5, uncheckedNextOffset(node, 1));
+ // EXPECT_EQ(9, uncheckedNextOffset(node, 5));
+ // EXPECT_EQ(13, uncheckedNextOffset(node, 9));
+ EXPECT_EQ(17, uncheckedNextOffset(node, 13));
+ EXPECT_EQ(19, uncheckedNextOffset(node, 17));
+ EXPECT_EQ(20, uncheckedNextOffset(node, 19));
+
+ // GB9: Do not break before extending characters or ZWJ.
+ // U+0300(COMBINING GRAVE ACCENT) has Extend property.
+ setBodyContent("<p id='target'>a&#x0300;b</p>"); // x Extend
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+ // U+200D is ZERO WIDTH JOINER.
+ setBodyContent("<p id='target'>a&#x200D;b</p>"); // x ZWJ
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ // GB9a: Do not break before SpacingMarks.
+ // U+0903(DEVANAGARI SIGN VISARGA) has SpacingMark property.
+ setBodyContent("<p id='target'>a&#x0903;b</p>"); // x SpacingMark
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ // GB9b: Do not break after Prepend but Blink breaks after Prepend char to address Bug 24342.
+ // U+0600(ARABIC NUMBER SIGN) has Prepend property.
+ setBodyContent("<p id='target'>a&#x0600;b</p>"); // Prepend x
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 2));
+
+ // Blink customization: Don't break before Japanese half-width katakana voiced marks.
+ setBodyContent("<p id='target'>a&#xFF76;&#xFF9E;b</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+
+ // Additional rule for Virama: Do not break after Virama except for Tamil.
+ // See http://www.unicode.org/Public/9.0.0/ucd/IndicSyllabicCategory-9.0.0d2.txt
+ // U+0905 is DEVANAGARI LETTER A. This has Extend property.
+ // U+094D is DEVANAGARI SIGN VIRAMA. This has Virama property.
+ // U+0915 is DEVANAGARI LETTER KA.
+ setBodyContent("<p id='target'>a&#x0905;&#x094D;&#x0915;b</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(4, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(5, uncheckedNextOffset(node, 4));
+ // U+0B85 is TAMIL LETTER A. This has Extend property.
+ // U+0BCD is TAMIL SIGN VIRAMA. This has Virama property.
+ // U+0B95 is TAMIL LETTER KA.
+ setBodyContent("<p id='target'>a&#x0B85;&#x0BCD;&#x0B95;b</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(4, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(3, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ EXPECT_EQ(5, uncheckedNextOffset(node, 4));
+ // TODO(nona): Consider to add Sinhala, Balinese, etc.
+
+ // GB10: Do not break within emoji modifier.
+ // U+1F385(FATHER CHRISTMAS) has E_Base property.
+ // U+1F3FB(EMOJI MODIFIER FITZPATRICK TYPE-1-2) has E_Modifier property.
+ setBodyContent("<p id='target'>a&#x1F385;&#x1F3FB;b</p>"); // E_Base x E_Modifier
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(5, uncheckedPreviousOffset(node, 6));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(1, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(5, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(6, uncheckedNextOffset(node, 5));
+ // U+1F466(BOY) has EBG property.
+ setBodyContent("<p id='target'>a&#x1F466;&#x1F3FB;b</p>"); // EBG x E_Modifier
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(5, uncheckedPreviousOffset(node, 6));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(1, uncheckedPreviousOffset(node, 5));
+ EXPECT_EQ(0, uncheckedPreviousOffset(node, 1));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(5, uncheckedNextOffset(node, 1));
+ EXPECT_EQ(6, uncheckedNextOffset(node, 5));
+
+ // GB11: Do not break within ZWJ emoji sequence.
+ // U+2764(HEAVY BLACK HEART) has Glue_After_Zwj property.
+ setBodyContent("<p id='target'>a&#x200D;&#x2764;b</p>"); // ZWJ x Glue_After_Zwj
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(3, uncheckedPreviousOffset(node, 4));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(0, uncheckedPreviousOffset(node, 3));
+ // EXPECT_EQ(3, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(4, uncheckedNextOffset(node, 3));
+ setBodyContent("<p id='target'>a&#x200D;&#x1F466;b</p>"); // ZWJ x EBG
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(4, uncheckedPreviousOffset(node, 5));
+ // TODO(nona): Enable following expectation.
+ // EXPECT_EQ(0, uncheckedPreviousOffset(node, 4));
+ // EXPECT_EQ(4, uncheckedNextOffset(node, 0));
+ EXPECT_EQ(5, uncheckedNextOffset(node, 4));
+
+ // GB999: Otherwise break everywhere.
+ // Breaks between Hangul syllable except for GB6, GB7, GB8.
+ setBodyContent("<p id='target'>" + L + T + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + V + L + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + V + LV + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + V + LVT + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LV + L + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LV + LV + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LV + LVT + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LVT + L + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LVT + V + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LVT + LV + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + LVT + LVT + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + T + L + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + T + V + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + T + LV + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ setBodyContent("<p id='target'>" + T + LVT + "</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 2));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+
+ // For GB10, if base emoji character is not E_Base or EBG, break happens before E_Modifier.
+ setBodyContent("<p id='target'>a&#x1F3FB;</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+ // U+1F5FA(WORLD MAP) doesn't have either E_Base or EBG property.
+ setBodyContent("<p id='target'>&#x1F5FA;&#x1F3FB;</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(2, uncheckedPreviousOffset(node, 4));
+ EXPECT_EQ(2, uncheckedNextOffset(node, 0));
+
+ // For GB11, if trailing character is not Glue_After_Zwj or EBG, break happens after ZWJ.
+ // U+1F5FA(WORLD MAP) doesn't have either Glue_After_Zwj or EBG.
+ setBodyContent("<p id='target'>&#x200D;&#x1F5FA;</p>");
+ node = document().getElementById("target")->firstChild();
+ EXPECT_EQ(1, uncheckedPreviousOffset(node, 3));
+ EXPECT_EQ(1, uncheckedNextOffset(node, 0));
+}
+
} // namespace blink
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