1 // Copyright 2015 PDFium 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/include/fxcrt/fx_bidi.h" 6 #include "testing/gtest/include/gtest/gtest.h" 7 8 namespace { 9 10 const FX_WCHAR kNeutralChar = 32; 11 const FX_WCHAR kLeftChar = 65; 12 const FX_WCHAR kRightChar = 1424; 13 14 } // namespace 15 16 TEST(fxcrt, BidiCharEmpty) { 17 int32_t start = -1; 18 int32_t count = -1; 19 CFX_BidiChar bidi; 20 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(nullptr, nullptr); 21 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 22 23 dir = bidi.GetBidiInfo(&start, nullptr); 24 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 25 EXPECT_EQ(0, start); 26 27 dir = bidi.GetBidiInfo(nullptr, &count); 28 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 29 EXPECT_EQ(0, count); 30 31 start = -1; 32 count = -1; 33 dir = bidi.GetBidiInfo(&start, &count); 34 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 35 EXPECT_EQ(0, start); 36 EXPECT_EQ(0, count); 37 38 EXPECT_FALSE(bidi.EndChar()); 39 } 40 41 TEST(fxcrt, BidiCharLeft) { 42 int32_t start = -1; 43 int32_t count = -1; 44 CFX_BidiChar bidi; 45 46 EXPECT_TRUE(bidi.AppendChar(kLeftChar)); 47 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count); 48 EXPECT_EQ(0, start); 49 EXPECT_EQ(0, count); 50 51 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 52 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 53 54 dir = bidi.GetBidiInfo(&start, &count); 55 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 56 EXPECT_EQ(0, start); 57 EXPECT_EQ(0, count); 58 59 EXPECT_TRUE(bidi.EndChar()); 60 dir = bidi.GetBidiInfo(&start, &count); 61 EXPECT_EQ(CFX_BidiChar::LEFT, dir); 62 EXPECT_EQ(0, start); 63 EXPECT_EQ(3, count); 64 65 EXPECT_FALSE(bidi.EndChar()); 66 } 67 68 TEST(fxcrt, BidiCharLeftNeutralRight) { 69 int32_t start = -1; 70 int32_t count = -1; 71 CFX_BidiChar bidi; 72 73 EXPECT_TRUE(bidi.AppendChar(kLeftChar)); 74 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count); 75 EXPECT_EQ(0, start); 76 EXPECT_EQ(0, count); 77 78 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 79 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 80 EXPECT_TRUE(bidi.AppendChar(kNeutralChar)); 81 dir = bidi.GetBidiInfo(&start, &count); 82 EXPECT_EQ(0, start); 83 EXPECT_EQ(3, count); 84 85 EXPECT_FALSE(bidi.AppendChar(kNeutralChar)); 86 EXPECT_FALSE(bidi.AppendChar(kNeutralChar)); 87 EXPECT_FALSE(bidi.AppendChar(kNeutralChar)); 88 EXPECT_TRUE(bidi.AppendChar(kRightChar)); 89 dir = bidi.GetBidiInfo(&start, &count); 90 EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir); 91 EXPECT_EQ(3, start); 92 EXPECT_EQ(4, count); 93 94 EXPECT_TRUE(bidi.EndChar()); 95 dir = bidi.GetBidiInfo(&start, &count); 96 EXPECT_EQ(CFX_BidiChar::RIGHT, dir); 97 EXPECT_EQ(7, start); 98 EXPECT_EQ(1, count); 99 100 EXPECT_FALSE(bidi.EndChar()); 101 } 102 103 TEST(fxcrt, BidiCharLeftRightLeft) { 104 int32_t start = -1; 105 int32_t count = -1; 106 CFX_BidiChar bidi; 107 108 EXPECT_TRUE(bidi.AppendChar(kLeftChar)); 109 CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count); 110 EXPECT_EQ(0, start); 111 EXPECT_EQ(0, count); 112 113 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 114 EXPECT_FALSE(bidi.AppendChar(kLeftChar)); 115 EXPECT_TRUE(bidi.AppendChar(kRightChar)); 116 dir = bidi.GetBidiInfo(&start, &count); 117 EXPECT_EQ(0, start); 118 EXPECT_EQ(3, count); 119 120 EXPECT_FALSE(bidi.AppendChar(kRightChar)); 121 EXPECT_FALSE(bidi.AppendChar(kRightChar)); 122 EXPECT_FALSE(bidi.AppendChar(kRightChar)); 123 EXPECT_TRUE(bidi.AppendChar(kLeftChar)); 124 dir = bidi.GetBidiInfo(&start, &count); 125 EXPECT_EQ(CFX_BidiChar::RIGHT, dir); 126 EXPECT_EQ(3, start); 127 EXPECT_EQ(4, count); 128 129 EXPECT_TRUE(bidi.EndChar()); 130 dir = bidi.GetBidiInfo(&start, &count); 131 EXPECT_EQ(CFX_BidiChar::LEFT, dir); 132 EXPECT_EQ(7, start); 133 EXPECT_EQ(1, count); 134 135 EXPECT_FALSE(bidi.EndChar()); 136 } 137
