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// Copyright 2013 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 "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkImageInfo.h"
#include "ui/gfx/image/image.h"
#include "ui/gfx/image/image_family.h"
#include "ui/gfx/image/image_skia.h"
#include "ui/gfx/image/image_unittest_util.h"
namespace {
namespace gt = gfx::test;
// Tests that |image| != NULL, and has the given width and height.
// This is a macro instead of a function, so that the correct line numbers are
// reported when a test fails.
#define EXPECT_IMAGE_NON_NULL_AND_SIZE(image, expected_width, expected_height) \
do { \
const gfx::Image* image_ = image; \
EXPECT_TRUE(image_); \
EXPECT_EQ(expected_width, image_->Width()); \
EXPECT_EQ(expected_height, image_->Height()); \
} while(0)
// Tests that |image| has the given width and height.
// This is a macro instead of a function, so that the correct line numbers are
// reported when a test fails.
#define EXPECT_IMAGE_SIZE(image, expected_width, expected_height) \
do { \
const gfx::Image& image_ = image; \
EXPECT_FALSE(image_.IsEmpty()); \
EXPECT_EQ(expected_width, image_.Width()); \
EXPECT_EQ(expected_height, image_.Height()); \
} while(0)
class ImageFamilyTest : public testing::Test {
public:
// Construct an ImageFamily. Implicitly tests Add and Empty.
void SetUp() override {
EXPECT_TRUE(image_family_.empty());
// Aspect ratio 1:1.
image_family_.Add(gt::CreateImageSkia(32, 32));
EXPECT_FALSE(image_family_.empty());
image_family_.Add(gt::CreateImageSkia(16, 16));
image_family_.Add(gt::CreateImageSkia(64, 64));
// Duplicate (should override previous one).
// Insert an Image directly, instead of an ImageSkia.
gfx::Image image(gt::CreateImageSkia(32, 32));
image_family_.Add(image);
// Aspect ratio 1:4.
image_family_.Add(gt::CreateImageSkia(3, 12));
image_family_.Add(gt::CreateImageSkia(12, 48));
// Aspect ratio 4:1.
image_family_.Add(gt::CreateImageSkia(512, 128));
image_family_.Add(gt::CreateImageSkia(256, 64));
EXPECT_FALSE(image_family_.empty());
}
gfx::ImageFamily image_family_;
};
TEST_F(ImageFamilyTest, Clear) {
image_family_.clear();
EXPECT_TRUE(image_family_.empty());
}
// Tests iteration over an ImageFamily.
TEST_F(ImageFamilyTest, Iteration) {
gfx::ImageFamily::const_iterator it = image_family_.begin();
gfx::ImageFamily::const_iterator end = image_family_.end();
// Expect iteration in order of aspect ratio (from thinnest to widest), then
// size.
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(3, 12), it->Size());
++it;
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(12, 48), it->Size());
it++; // Test post-increment.
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(16, 16), it->Size());
++it;
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(32, 32), it->Size());
--it; // Test decrement
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(16, 16), it->Size());
++it;
++it;
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(64, 64), (*it).Size()); // Test operator*.
++it;
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(256, 64), it->Size());
++it;
EXPECT_TRUE(it != end);
EXPECT_EQ(gfx::Size(512, 128), it->Size());
++it;
EXPECT_TRUE(it == end);
}
TEST_F(ImageFamilyTest, GetBest) {
// Get on an empty family.
gfx::ImageFamily empty_family;
EXPECT_TRUE(empty_family.empty());
EXPECT_FALSE(empty_family.GetBest(32, 32));
EXPECT_FALSE(empty_family.GetBest(0, 32));
EXPECT_FALSE(empty_family.GetBest(32, 0));
// Get various aspect ratios and sizes on the sample family.
// 0x0 (expect the smallest square image).
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 0), 16, 16);
// GetBest(0, N) or GetBest(N, 0) should be treated the same as GetBest(0, 0).
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 16), 16, 16);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 64), 16, 16);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 0), 16, 16);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 0), 16, 16);
// Thinner than thinnest image.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 12), 3, 12);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 13), 12, 48);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(10, 60), 12, 48);
// Between two images' aspect ratio.
// Note: Testing the boundary around 1:2 and 2:1, half way to 1:4 and 4:1.
// Ties are broken by favouring the thinner aspect ratio.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(63, 32), 64, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 32), 64, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(65, 32), 256, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 63), 64, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 64), 12, 48);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 65), 12, 48);
// Exact match aspect ratio.
// Exact match size.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 32), 32, 32);
// Slightly smaller.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(31, 31), 32, 32);
// Much smaller.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(17, 17), 32, 32);
// Exact match size.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 16), 16, 16);
// Smaller than any image.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(3, 3), 16, 16);
// Larger than any image.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(512, 512), 64, 64);
// 1:4 aspect ratio.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(16, 64), 12, 48);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(2, 8), 3, 12);
// 4:1 aspect ratio.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(64, 16), 256, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(260, 65), 512, 128);
// Wider than widest image.
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(255, 51), 256, 64);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(260, 52), 512, 128);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(654, 129), 512, 128);
}
TEST_F(ImageFamilyTest, CreateExact) {
// CreateExact on an empty family.
gfx::ImageFamily empty_family;
EXPECT_TRUE(empty_family.empty());
EXPECT_TRUE(empty_family.CreateExact(32, 32).IsEmpty());
EXPECT_TRUE(empty_family.CreateExact(0, 32).IsEmpty());
EXPECT_TRUE(empty_family.CreateExact(32, 0).IsEmpty());
// CreateExact on a family with only empty images results in an empty image,
// despite the requested image size.
gfx::ImageFamily family_with_empty_image;
family_with_empty_image.Add(gfx::Image());
EXPECT_FALSE(family_with_empty_image.empty());
EXPECT_TRUE(family_with_empty_image.CreateExact(32, 32).IsEmpty());
// CreateExact on various aspect ratios and sizes on the sample family.
// Targeting an image with width and/or height of 0 results in empty image.
EXPECT_TRUE(image_family_.CreateExact(0, 0).IsEmpty());
EXPECT_TRUE(image_family_.CreateExact(0, 64).IsEmpty());
EXPECT_TRUE(image_family_.CreateExact(64, 0).IsEmpty());
// Thinner than thinnest image.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(2, 12), 2, 12);
// Exact match aspect ratio.
// Exact match size.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(32, 32), 32, 32);
// Much smaller.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(17, 17), 17, 17);
// Smaller than any image.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(3, 3), 3, 3);
// Larger than any image.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(512, 512), 512, 512);
// Wider than widest image.
EXPECT_IMAGE_SIZE(image_family_.CreateExact(255, 51), 255, 51);
// CreateExact on an image family with a non-N32 color bitmap results in an
// empty image.
gfx::ImageFamily a8_family;
SkBitmap a8_bitmap;
SkImageInfo a8_info = SkImageInfo::MakeA8(64, 64);
a8_bitmap.allocPixels(a8_info);
a8_family.Add(gfx::Image::CreateFrom1xBitmap(a8_bitmap));
EXPECT_TRUE(a8_family.CreateExact(32, 32).IsEmpty());
}
// Test adding and looking up images with 0 width and height.
TEST_F(ImageFamilyTest, ZeroWidthAndHeight) {
// An empty Image. Should be considered to have 0 width and height.
image_family_.Add(gfx::Image());
// Images with 0 width OR height should be treated the same as an image with 0
// width AND height (in fact, the ImageSkias should be indistinguishable).
image_family_.Add(gt::CreateImageSkia(32, 0));
image_family_.Add(gt::CreateImageSkia(0, 32));
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 0), 0, 0);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 1), 16, 16);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 32), 32, 32);
// GetBest(0, N) or GetBest(N, 0) should be treated the same as GetBest(0, 0).
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 1), 0, 0);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(0, 32), 0, 0);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 0), 0, 0);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 0), 0, 0);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(1, 32), 12, 48);
EXPECT_IMAGE_NON_NULL_AND_SIZE(image_family_.GetBest(32, 1), 256, 64);
}
} // namespace
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