1 // Copyright 2013 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 "testing/gtest/include/gtest/gtest.h" 6 #include "ui/gfx/image/image.h" 7 #include "ui/gfx/image/image_family.h" 8 #include "ui/gfx/image/image_skia.h" 9 #include "ui/gfx/image/image_unittest_util.h" 10 11 namespace { 12 13 namespace gt = gfx::test; 14 15 // Tests that |image| != NULL, and has the given width and height. 16 // This is a macro instead of a function, so that the correct line numbers are 17 // reported when a test fails. 18 #define EXPECT_IMAGE_NON_NULL_AND_SIZE(image, expected_width, expected_height) \ 19 do { \ 20 const gfx::Image* image_ = image; \ 21 EXPECT_TRUE(image_); \ 22 EXPECT_EQ(expected_width, image_->Width()); \ 23 EXPECT_EQ(expected_height, image_->Height()); \ 24 } while(0) 25 26 class ImageFamilyTest : public testing::Test { 27 public: 28 // Construct an ImageFamily. Implicitly tests Add and Empty. 29 virtual void SetUp() OVERRIDE { 30 EXPECT_TRUE(image_family_.empty()); 31 32 // Aspect ratio 1:1. 33 image_family_.Add(gt::CreateImageSkia(32, 32)); 34 EXPECT_FALSE(image_family_.empty()); 35 image_family_.Add(gt::CreateImageSkia(16, 16)); 36 image_family_.Add(gt::CreateImageSkia(64, 64)); 37 // Duplicate (should override previous one). 38 // Insert an Image directly, instead of an ImageSkia. 39 gfx::Image image(gt::CreateImageSkia(32, 32)); 40 image_family_.Add(image); 41 // Aspect ratio 1:4. 42 image_family_.Add(gt::CreateImageSkia(3, 12)); 43 image_family_.Add(gt::CreateImageSkia(12, 48)); 44 // Aspect ratio 4:1. 45 image_family_.Add(gt::CreateImageSkia(512, 128)); 46 image_family_.Add(gt::CreateImageSkia(256, 64)); 47 48 EXPECT_FALSE(image_family_.empty()); 49 } 50 51 gfx::ImageFamily image_family_; 52 }; 53 54 TEST_F(ImageFamilyTest, Clear) { 55 image_family_.clear(); 56 EXPECT_TRUE(image_family_.empty()); 57 } 58 59 // Tests iteration over an ImageFamily. 60 TEST_F(ImageFamilyTest, Iteration) { 61 gfx::ImageFamily::const_iterator it = image_family_.begin(); 62 gfx::ImageFamily::const_iterator end = image_family_.end(); 63 64 // Expect iteration in order of aspect ratio (from thinnest to widest), then 65 // size. 66 EXPECT_TRUE(it != end); 67 EXPECT_EQ(gfx::Size(3, 12), it->Size()); 68 ++it; 69 EXPECT_TRUE(it != end); 70 EXPECT_EQ(gfx::Size(12, 48), it->Size()); 71 it++; // Test post-increment. 72 EXPECT_TRUE(it != end); 73 EXPECT_EQ(gfx::Size(16, 16), it->Size()); 74 ++it; 75 EXPECT_TRUE(it != end); 76 EXPECT_EQ(gfx::Size(32, 32), it->Size()); 77 --it; // Test decrement 78 EXPECT_TRUE(it != end); 79 EXPECT_EQ(gfx::Size(16, 16), it->Size()); 80 ++it; 81 ++it; 82 EXPECT_TRUE(it != end); 83 EXPECT_EQ(gfx::Size(64, 64), (*it).Size()); // Test operator*. 84 ++it; 85 EXPECT_TRUE(it != end); 86 EXPECT_EQ(gfx::Size(256, 64), it->Size()); 87 ++it; 88 EXPECT_TRUE(it != end); 89 EXPECT_EQ(gfx::Size(512, 128), it->Size()); 90 ++it; 91 92 EXPECT_TRUE(it == end); 93 } 94 95 TEST_F(ImageFamilyTest, Get) { 96 // Get on an empty family. 97 gfx::ImageFamily empty_family; 98 EXPECT_TRUE(empty_family.empty()); 99 EXPECT_FALSE(empty_family.GetBest(32, 32)); 100 EXPECT_FALSE(empty_family.GetBest(0, 32)); 101 EXPECT_FALSE(empty_family.GetBest(32, 0)); 102 103 // Get various aspect ratios and sizes on the sample family. 104 105 // 0x0 (expect the smallest square image). 106 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 0), 16, 16); 107 // GetBest(0, N) or GetBest(N, 0) should be treated the same as GetBest(0, 0). 108 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 16), 16, 16); 109 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 64), 16, 16); 110 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 0), 16, 16); 111 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 0), 16, 16); 112 113 // Thinner than thinnest image. 114 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 12), 3, 12); 115 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 13), 12, 48); 116 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(10, 60), 12, 48); 117 118 // Between two images' aspect ratio. 119 // Note: Testing the boundary around 1:2 and 2:1, half way to 1:4 and 4:1. 120 // Ties are broken by favouring the thinner aspect ratio. 121 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(63, 32), 64, 64); 122 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 32), 64, 64); 123 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(65, 32), 256, 64); 124 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 63), 64, 64); 125 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 64), 12, 48); 126 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 65), 12, 48); 127 128 // Exact match aspect ratio. 129 // Exact match size. 130 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 32), 32, 32); 131 // Slightly smaller. 132 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(31, 31), 32, 32); 133 // Much smaller. 134 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(17, 17), 32, 32); 135 // Exact match size. 136 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 16), 16, 16); 137 // Smaller than any image. 138 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(3, 3), 16, 16); 139 // Larger than any image. 140 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(512, 512), 64, 64); 141 // 1:4 aspect ratio. 142 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 64), 12, 48); 143 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 8), 3, 12); 144 // 4:1 aspect ratio. 145 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 16), 256, 64); 146 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(260, 65), 512, 128); 147 148 // Wider than widest image. 149 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(255, 51), 256, 64); 150 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(260, 52), 512, 128); 151 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(654, 129), 512, 128); 152 } 153 154 // Test adding and looking up images with 0 width and height. 155 TEST_F(ImageFamilyTest, ZeroWidthAndHeight) { 156 // An empty Image. Should be considered to have 0 width and height. 157 image_family_.Add(gfx::Image()); 158 // Images with 0 width OR height should be treated the same as an image with 0 159 // width AND height (in fact, the ImageSkias should be indistinguishable). 160 image_family_.Add(gt::CreateImageSkia(32, 0)); 161 image_family_.Add(gt::CreateImageSkia(0, 32)); 162 163 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 0), 0, 0); 164 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 1), 16, 16); 165 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 32), 32, 32); 166 167 // GetBest(0, N) or GetBest(N, 0) should be treated the same as GetBest(0, 0). 168 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 1), 0, 0); 169 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 32), 0, 0); 170 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 0), 0, 0); 171 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 0), 0, 0); 172 173 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 32), 12, 48); 174 EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 1), 256, 64); 175 } 176 177 } // namespace 178
