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// Copyright 2019 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 "ui/gfx/skia_util.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkBitmap.h"
namespace gfx {
TEST(SkiaUtilTest, BitmapsAreEqual) {
SkBitmap a, b;
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Both bitmaps are null.
a.allocN32Pixels(0, 0);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // isNull() differs.
b.allocN32Pixels(10, 0);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Dimensions differ.
a.allocN32Pixels(0, 10);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Dimensions still differ.
b.allocN32Pixels(0, 10);
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Dimensions equal (but empty).
a.allocN32Pixels(10, 10);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Dimensions differ.
b.allocN32Pixels(10, 10);
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Dimensions equal (non-empty).
a.eraseColor(SK_ColorRED);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Contents differ.
b.eraseColor(SK_ColorGREEN);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Contents still differ.
b.eraseColor(SK_ColorRED);
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Contents equal.
a.eraseColor(SK_ColorBLUE);
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // Contents differ.
b = a;
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Generation ids equal.
a.reset();
EXPECT_FALSE(gfx::BitmapsAreEqual(a, b)); // isNull() differs.
b.reset();
EXPECT_TRUE(gfx::BitmapsAreEqual(a, b)); // Both bitmaps are null.
}
} // namespace gfx
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