| // 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 "third_party/blink/renderer/core/editing/state_machines/backspace_state_machine.h" |
| |
| #include "testing/gtest/include/gtest/gtest.h" |
| #include "third_party/blink/renderer/platform/wtf/text/unicode.h" |
| |
| namespace blink { |
| |
| namespace backspace_state_machine_test { |
| |
| const TextSegmentationMachineState kNeedMoreCodeUnit = |
| TextSegmentationMachineState::kNeedMoreCodeUnit; |
| const TextSegmentationMachineState kFinished = |
| TextSegmentationMachineState::kFinished; |
| |
| TEST(BackspaceStateMachineTest, DoNothingCase) { |
| BackspaceStateMachine machine; |
| EXPECT_EQ(0, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(0, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, SingleCharacter) { |
| BackspaceStateMachine machine; |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('-')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('\t')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| // U+3042 HIRAGANA LETTER A. |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(0x3042)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, SurrogatePair) { |
| BackspaceStateMachine machine; |
| |
| // U+20BB7 is \uD83D\uDDFA in UTF-16. |
| const UChar kLeadSurrogate = 0xD842; |
| const UChar kTrailSurrogate = 0xDFB7; |
| |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kTrailSurrogate)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kLeadSurrogate)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Edge cases |
| // Unpaired trailing surrogate. Delete only broken trail surrogate. |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kTrailSurrogate)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kTrailSurrogate)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kTrailSurrogate)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kTrailSurrogate)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Unpaired leading surrogate. Delete only broken lead surrogate. |
| machine.Reset(); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kLeadSurrogate)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, CRLF) { |
| BackspaceStateMachine machine; |
| |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('\r')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit('\n')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit('\n')); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(' ')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // CR LF should be deleted at the same time. |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit('\n')); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('\r')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, KeyCap) { |
| BackspaceStateMachine machine; |
| |
| const UChar kKeycap = 0x20E3; |
| const UChar kVs16 = 0xFE0F; |
| const UChar kNotKeycapBaseLead = 0xD83C; |
| const UChar kNotKeycapBaseTrail = 0xDCCF; |
| |
| // keycapBase + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('0')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // keycapBase + VS + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('0')); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are edge cases. Remove only keycap character. |
| // Not keycapBase + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not keycapBase + VS + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not keycapBase(surrogate pair) + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotKeycapBaseTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kNotKeycapBaseLead)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not keycapBase(surrogate pair) + VS + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotKeycapBaseTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kNotKeycapBaseLead)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + VS + keycap |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKeycap)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, EmojiModifier) { |
| BackspaceStateMachine machine; |
| |
| const UChar kEmojiModifierLead = 0xD83C; |
| const UChar kEmojiModifierTrail = 0xDFFB; |
| const UChar kEmojiModifierBase = 0x261D; |
| const UChar kEmojiModifierBaseLead = 0xD83D; |
| const UChar kEmojiModifierBaseTrail = 0xDC66; |
| const UChar kNotEmojiModifierBaseLead = 0xD83C; |
| const UChar kNotEmojiModifierBaseTrail = 0xDCCF; |
| const UChar kVs16 = 0xFE0F; |
| |
| // EMOJI_MODIFIER_BASE + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kEmojiModifierBase)); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // EMOJI_MODIFIER_BASE(surrogate pairs) + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierBaseTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kEmojiModifierBaseLead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // EMOJI_MODIFIER_BASE + VS + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kEmojiModifierBase)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // EMOJI_MODIFIER_BASE(surrogate pairs) + VS + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierBaseTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kEmojiModifierBaseLead)); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are edge cases. Remove only emoji modifier. |
| // Not EMOJI_MODIFIER_BASE + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not EMOJI_MODIFIER_BASE(surrogate pairs) + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotEmojiModifierBaseTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotEmojiModifierBaseLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not EMOJI_MODIFIER_BASE + VS + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not EMOJI_MODIFIER_BASE(surrogate pairs) + VS + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotEmojiModifierBaseTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotEmojiModifierBaseLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + VS + EMOJI_MODIFIER |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, RegionalIndicator) { |
| BackspaceStateMachine machine; |
| |
| const UChar kRegionalIndicatorULead = 0xD83C; |
| const UChar kRegionalIndicatorUTrail = 0xDDFA; |
| const UChar kRegionalIndicatorSLead = 0xD83C; |
| const UChar kRegionalIndicatorSTrail = 0xDDF8; |
| const UChar kNotRegionalIndicatorLead = 0xD83C; |
| const UChar kNotRegionalIndicatorTrail = 0xDCCF; |
| |
| // Not RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI(surrogate pairs) + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorLead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI + RI + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI(surrogate pairs) + RI + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorLead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + RI + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are edge cases. Delete last regional indicator only. |
| // Not RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI(surrogate pairs) + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit('a')); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not RI(surrogate pairs) + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorTrail)); |
| EXPECT_EQ(kFinished, |
| machine.FeedPrecedingCodeUnit(kNotRegionalIndicatorLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + RI + RI + RI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorSLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorUTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kRegionalIndicatorULead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, VariationSequencec) { |
| BackspaceStateMachine machine; |
| |
| UChar vs01 = 0xFE00; |
| UChar vs01_base = 0xA85E; |
| UChar vs01_base_lead = 0xD802; |
| UChar vs01_base_trail = 0xDEC6; |
| |
| UChar vs17_lead = 0xDB40; |
| UChar vs17_trail = 0xDD00; |
| UChar vs17_base = 0x3402; |
| UChar vs17_base_lead = 0xD841; |
| UChar vs17_base_trail = 0xDC8C; |
| |
| UChar mongolian_vs = 0x180B; |
| UChar mongolian_vs_base = 0x1820; |
| // Variation selectors can't be a base of variation sequence. |
| UChar notvs_base = 0xFE00; |
| UChar notvs_base_lead = 0xDB40; |
| UChar notvs_base_trail = 0xDD01; |
| |
| // VS_BASE + VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(vs01_base)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // VS_BASE + VS(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_trail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_lead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(vs17_base)); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // VS_BASE(surrogate pairs) + VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01_base_trail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(vs01_base_lead)); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-3, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // VS_BASE(surrogate pairs) + VS(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_trail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_lead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_base_trail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(vs17_base_lead)); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-4, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // mongolianVsBase + mongolianVs |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(mongolian_vs)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(mongolian_vs_base)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are edge case. Delete only variation selector. |
| // Not VS_BASE + VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not VS_BASE + VS(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_trail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_lead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not VS_BASE(surrogate pairs) + VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(notvs_base_trail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base_lead)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not VS_BASE(surrogate pairs) + VS(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_trail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_lead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(notvs_base_trail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base_lead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not VS_BASE + MONGOLIAN_VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(mongolian_vs)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Not VS_BASE(surrogate pairs) + MONGOLIAN_VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(mongolian_vs)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(notvs_base_trail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(notvs_base_lead)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs01)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + VS(surrogate pair) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_trail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(vs17_lead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + MONGOLIAN_VS |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(mongolian_vs)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| TEST(BackspaceStateMachineTest, ZWJSequence) { |
| BackspaceStateMachine machine; |
| |
| const UChar kZwj = 0x200D; |
| const UChar kEyeLead = 0xD83D; |
| const UChar kEyeTrail = 0xDC41; |
| const UChar kLeftSpeachBubbleLead = 0xD83D; |
| const UChar kLeftSpeachBubbleTrail = 0xDDE8; |
| const UChar kManLead = 0xD83D; |
| const UChar kManTrail = 0xDC68; |
| const UChar kBoyLead = 0xD83D; |
| const UChar kBoyTrail = 0xDC66; |
| const UChar kHeart = 0x2764; |
| const UChar kKissLead = 0xD83D; |
| const UChar kKillTrail = 0xDC8B; |
| const UChar kVs16 = 0xFE0F; |
| const UChar kOther = 'a'; |
| const UChar kOtherLead = 0xD83C; |
| const UChar kOtherTrail = 0xDCCF; |
| |
| // Followings are chosen from valid zwj sequcne. |
| // See http://www.unicode.org/Public/emoji/2.0//emoji-zwj-sequences.txt |
| |
| // others + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use EYE + ZWJ + LEFT_SPEACH_BUBBLE |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others(surrogate pairs) + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use EYE + ZWJ + LEFT_SPEACH_BUBBLE |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use EYE + ZWJ + LEFT_SPEACH_BUBBLE |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kLeftSpeachBubbleLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kEyeLead)); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-5, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others(surrogate pairs) + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + vs16 + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others(surrogate pairs) + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + |
| // ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + vs16 + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + vs16 + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-8, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + MAN + ZWJ + boy + ZWJ + BOY |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others(surrogate pairs) + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + |
| // ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + MAN + ZWJ + boy + ZWJ + BOY |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + MAN + ZWJ + boy + ZWJ + BOY |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBoyLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + ZWJ_EMOJI + ZWJ + |
| // ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + VS + ZWJ + KISS + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKillTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKissLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // others(surrogate pairs) + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + |
| // ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + VS + ZWJ + KISS + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKillTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKissLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI + VS + ZWJ + ZWJ_EMOJI + ZWJ + ZWJ_EMOJI |
| // As an example, use MAN + ZWJ + heart + VS + ZWJ + KISS + ZWJ + MAN |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKillTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kKissLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kVs16)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-11, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + EMOJI_MODIFIER_BASE + EMOJI_MODIFIER + ZWJ + ZWJ_EMOJI |
| // As an example, use WOMAN + MODIFIER + ZWJ + BRIEFCASE |
| const UChar kWomanLead = 0xD83D; |
| const UChar kWomanTrail = 0xDC69; |
| const UChar kEmojiModifierLead = 0xD83C; |
| const UChar kEmojiModifierTrail = 0xDFFB; |
| const UChar kBriefcaseLead = 0xD83D; |
| const UChar kBriefcaseTrail = 0xDCBC; |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBriefcaseTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kBriefcaseLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, |
| machine.FeedPrecedingCodeUnit(kEmojiModifierLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kWomanTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kWomanLead)); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-7, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are not edge cases but good to check. |
| // If leading character is not zwj, delete only ZWJ_EMOJI. |
| // other + ZWJ_EMOJI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // other(surrogate pairs) + ZWJ_EMOJI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kHeart)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // other + ZWJ_EMOJI(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOther)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // other(surrogate pairs) + ZWJ_EMOJI(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kOtherTrail)); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kOtherLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Sot + ZWJ_EMOJI(surrogate pairs) |
| machine.Reset(); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManTrail)); |
| EXPECT_EQ(kNeedMoreCodeUnit, machine.FeedPrecedingCodeUnit(kManLead)); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| EXPECT_EQ(-2, machine.FinalizeAndGetBoundaryOffset()); |
| |
| // Followings are edge case. |
| // It is hard to list all edge case patterns. Check only over deleting by ZWJ. |
| // any + ZWJ: should delete only last ZWJ. |
| machine.Reset(); |
| EXPECT_EQ(kFinished, machine.FeedPrecedingCodeUnit(kZwj)); |
| EXPECT_EQ(-1, machine.FinalizeAndGetBoundaryOffset()); |
| } |
| |
| } // namespace backspace_state_machine_test |
| |
| } // namespace blink |
