third_party/WebKit/Source/platform/transforms/TransformTestHelper.h - Issue 2265453003: Add platform/transforms pretty printers for logging and testing

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Issue 2265453003: Add platform/transforms pretty printers for logging and testing (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Update per reviewer comments Created 4 years, 3 months ago

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1 // Copyright 2015 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 #ifndef TransformTestHelper_h

6 #define TransformTestHelper_h

7

8 #include "platform/PlatformExport.h"

9 #include "platform/transforms/TransformationMatrix.h"

10 #include "wtf/text/WTFString.h"

11

12 #include <gtest/gtest.h>

13

14 // This file should only be included in test source files.

15

16 #define EXPECT_TRANSFORMS_ALMOST_EQ(a, b) \

17 EXPECT_PRED_FORMAT2(::blink::TransformTestHelper::transformsAreAlmostEqual, a, b)

18 #define ASSERT_TRANSFORMS_ALMOST_EQ(a, b) \

19 ASSERT_PRED_FORMAT2(::blink::TransformTestHelper::transformsAreAlmostEqual, a, b)

20

21 namespace blink {

22 namespace TransformTestHelper {

23

24 // These are helpers for the macros above.

25

26 bool floatsAreAlmostEqual(float a, float b)

27 {

28 // This trick was taken from ui/gfx/test/gfx_util.cc.

29 return ::testing::FloatLE("a", "b", a, b) && ::testing::FloatLE("b", "a", b, a);

30 }

31

32 String transformationMatrixToString(const TransformationMatrix& matrix)

33 {

34 return String::format(

35 "(row-major) [ [ %.2f %.2f %.2f %.2f ] [ %.2f %.2f %.2f %.2f ] [ %.2f %. 2f %.2f %.2f ] [ %.2f %.2f %.2f %.2f ] ]",

36 matrix.m11(), matrix.m21(), matrix.m31(), matrix.m41(),

37 matrix.m12(), matrix.m22(), matrix.m32(), matrix.m42(),

38 matrix.m13(), matrix.m23(), matrix.m33(), matrix.m43(),

39 matrix.m14(), matrix.m24(), matrix.m34(), matrix.m44());

40 }

41

42 const TransformationMatrix& toTransformationMatrix(const TransformationMatrix& m atrix) { return matrix; }

43

44 TransformationMatrix toTransformationMatrix(const SkMatrix44& skMatrix44)

45 {

46 TransformationMatrix matrix;

47 matrix.setMatrix(

48 skMatrix44.getDouble(0, 0),

49 skMatrix44.getDouble(1, 0),

50 skMatrix44.getDouble(2, 0),

51 skMatrix44.getDouble(3, 0),

52 skMatrix44.getDouble(0, 1),

53 skMatrix44.getDouble(1, 1),

54 skMatrix44.getDouble(2, 1),

55 skMatrix44.getDouble(3, 1),

56 skMatrix44.getDouble(0, 2),

57 skMatrix44.getDouble(1, 2),

58 skMatrix44.getDouble(2, 2),

59 skMatrix44.getDouble(3, 2),

60 skMatrix44.getDouble(0, 3),

61 skMatrix44.getDouble(1, 3),

62 skMatrix44.getDouble(2, 3),

63 skMatrix44.getDouble(3, 3));

64 return matrix;

65 }

66

67 template <typename T1, typename T2>

68 ::testing::AssertionResult transformsAreAlmostEqual(

69 const char* lhsExpr, const char* rhsExpr,

70 const T1& lhs, const T2& rhs)

71 {

72 return transformsAreAlmostEqual(lhsExpr, rhsExpr, toTransformationMatrix(lhs ), toTransformationMatrix(rhs));

73 }

74

75 template <>

76 ::testing::AssertionResult transformsAreAlmostEqual(

77 const char* lhsExpr, const char* rhsExpr,

78 const TransformationMatrix& lhs, const TransformationMatrix& rhs)

79 {

80 if (lhs == rhs)

81 return ::testing::AssertionSuccess();

82

83 if (floatsAreAlmostEqual(lhs.m11(), rhs.m11())

84 && floatsAreAlmostEqual(lhs.m12(), rhs.m12())

85 && floatsAreAlmostEqual(lhs.m13(), rhs.m13())

86 && floatsAreAlmostEqual(lhs.m14(), rhs.m14())

87 && floatsAreAlmostEqual(lhs.m21(), rhs.m21())

88 && floatsAreAlmostEqual(lhs.m22(), rhs.m22())

89 && floatsAreAlmostEqual(lhs.m23(), rhs.m23())

90 && floatsAreAlmostEqual(lhs.m24(), rhs.m24())

91 && floatsAreAlmostEqual(lhs.m31(), rhs.m31())

92 && floatsAreAlmostEqual(lhs.m32(), rhs.m32())

93 && floatsAreAlmostEqual(lhs.m33(), rhs.m33())

94 && floatsAreAlmostEqual(lhs.m34(), rhs.m34())

95 && floatsAreAlmostEqual(lhs.m41(), rhs.m41())

96 && floatsAreAlmostEqual(lhs.m42(), rhs.m42())

97 && floatsAreAlmostEqual(lhs.m43(), rhs.m43())

98 && floatsAreAlmostEqual(lhs.m44(), rhs.m44()))

99 return ::testing::AssertionSuccess();

100

101 return ::testing::AssertionFailure()

102 << "Value of: " << rhsExpr

103 << "\n Actual: " << transformationMatrixToString(rhs).ascii().data()

104 << "\nExpected: " << lhsExpr

105 << "\nWhich is: " << transformationMatrixToString(lhs).ascii().data();

106 }

107

108 } // namespace TransformTestHelper

109 } // namespace blink

110

111 #endif // TransformTestHelper_h

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