third_party/WebKit/Source/core/editing/BackspaceStateMachineTest.cpp - Issue 1839753005: Move state machines to state_machines subdir

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Issue 1839753005: Move state machines to state_machines subdir (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Fix style errr Created 4 years, 8 months ago

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1 // Copyright 2016 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #include "core/editing/BackspaceStateMachine.h"

6

7 #include "testing/gtest/include/gtest/gtest.h"

8

9 namespace blink {

10

11 TEST(BackspaceStateMachineTest, DoNothingCase)

12 {

13 BackspaceStateMachine machine;

14 EXPECT_EQ(0, machine.finalizeAndGetCodeUnitCountToBeDeleted());

15 EXPECT_EQ(0, machine.finalizeAndGetCodeUnitCountToBeDeleted());

16 }

17

18 TEST(BackspaceStateMachineTest, SingleCharacter)

19 {

20 BackspaceStateMachine machine;

21 EXPECT_TRUE(machine.updateState('a'));

22 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

23 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

24

25 machine.reset();

26 EXPECT_TRUE(machine.updateState('-'));

27 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

28 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

29

30 machine.reset();

31 EXPECT_TRUE(machine.updateState('\t'));

32 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

33 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

34

35 machine.reset();

36 // U+3042 HIRAGANA LETTER A.

37 EXPECT_TRUE(machine.updateState(0x3042));

38 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

39 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

40 }

41

42 TEST(BackspaceStateMachineTest, SurrogatePair)

43 {

44 BackspaceStateMachine machine;

45

46 // U+1F5FA(WORLD MAP) is \uD83D\uDDFA in UTF-16.

47 uint16_t leadSurrogate = 0xD83D;

48 uint16_t trailSurrogate = 0xDDFA;

49

50 EXPECT_FALSE(machine.updateState(trailSurrogate));

51 EXPECT_TRUE(machine.updateState(leadSurrogate));

52 EXPECT_EQ(2, machine.finalizeAndGetCodeUnitCountToBeDeleted());

53 EXPECT_EQ(2, machine.finalizeAndGetCodeUnitCountToBeDeleted());

54

55 // Edge cases

56 // Unpaired trailing surrogate. Delete only broken trail surrogate.

57 machine.reset();

58 EXPECT_FALSE(machine.updateState(trailSurrogate));

59 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

60 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

61

62 machine.reset();

63 EXPECT_FALSE(machine.updateState(trailSurrogate));

64 EXPECT_TRUE(machine.updateState('a'));

65 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

66 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

67

68 machine.reset();

69 EXPECT_FALSE(machine.updateState(trailSurrogate));

70 EXPECT_TRUE(machine.updateState(trailSurrogate));

71 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

72 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

73

74 // Unpaired leading surrogate. Delete only broken lead surrogate.

75 machine.reset();

76 EXPECT_TRUE(machine.updateState(leadSurrogate));

77 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

78 EXPECT_EQ(1, machine.finalizeAndGetCodeUnitCountToBeDeleted());

79 }

80

81 } // namespace blink

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