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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/color/color_provider.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/color/color_recipe.h"
#include "ui/color/color_test_ids.h"
#include "ui/color/color_transform.h"
#include "ui/gfx/color_palette.h"
#include "ui/gfx/color_utils.h"
namespace ui {
namespace {
// Tests that when there are no mixers, GetColor() returns a placeholder value.
TEST(ColorProviderTest, GetColorNoMixers) {
ColorProvider provider;
EXPECT_EQ(gfx::kPlaceholderColor, provider.GetColor(kColorTest0));
}
// Tests that when there is a single mixer, GetColor() makes use of it where
// possible.
TEST(ColorProviderTest, SingleMixer) {
ColorProvider provider;
provider.AddMixer()[kColorTest0] = {SK_ColorGREEN};
EXPECT_EQ(SK_ColorGREEN, provider.GetColor(kColorTest0));
EXPECT_EQ(gfx::kPlaceholderColor, provider.GetColor(kColorTest1));
}
// Tests that when there are multiple non-overlapping mixers, GetColor() makes
// use of both.
TEST(ColorProviderTest, NonOverlappingMixers) {
ColorProvider provider;
provider.AddMixer()[kColorTest0] = {SK_ColorGREEN};
provider.AddMixer()[kColorTest1] = {SK_ColorRED};
EXPECT_EQ(SK_ColorGREEN, provider.GetColor(kColorTest0));
EXPECT_EQ(SK_ColorRED, provider.GetColor(kColorTest1));
}
// Tests that when mixers supply overlapping color specifications, the last one
// added takes priority.
TEST(ColorProviderTest, OverlappingMixers) {
ColorProvider provider;
provider.AddMixer()[kColorTest0] = {SK_ColorGREEN};
provider.AddMixer()[kColorTest0] = {SK_ColorRED};
EXPECT_EQ(SK_ColorRED, provider.GetColor(kColorTest0));
}
// Tests that with both a standard and a "postprocessing" mixer, GetColor()
// takes both into account.
TEST(ColorProviderTest, WithProcessing) {
ColorProvider provider;
provider.AddMixer()[kColorTest0] = {SK_ColorBLACK};
provider.AddPostprocessingMixer()[kColorTest0] =
GetColorWithMaxContrast(FromTransformInput());
EXPECT_EQ(SK_ColorWHITE, provider.GetColor(kColorTest0));
}
// A "postprocessing" mixer can be added before regular mixers. The result
// should be equivalent.
TEST(ColorProviderTest, WithProcessingAddedBeforeRegular) {
ColorProvider provider;
provider.AddPostprocessingMixer()[kColorTest0] =
GetColorWithMaxContrast(FromTransformInput());
provider.AddMixer()[kColorTest0] = {SK_ColorBLACK};
EXPECT_EQ(SK_ColorWHITE, provider.GetColor(kColorTest0));
}
// Tests that if a color is redefined by a later mixer, an earlier mixer will
// "see" the result.
TEST(ColorProviderTest, Redefinition) {
ColorProvider provider;
ColorMixer& mixer0 = provider.AddMixer();
mixer0[kColorTest0] = {SK_ColorBLACK};
mixer0[kColorTest1] = AlphaBlend(SK_ColorRED, kColorTest0, 0x01);
provider.AddMixer()[kColorTest0] = {SK_ColorWHITE};
EXPECT_EQ(SK_ColorWHITE, provider.GetColor(kColorTest0));
EXPECT_FALSE(color_utils::IsDark(provider.GetColor(kColorTest1)));
}
// Tests that "postprocessing" mixers are skipped for the purposes of color
// lookup during intermediate stages.
TEST(ColorProviderTest, RedefinitionWithProcessing) {
ColorProvider provider;
ColorMixer& mixer0 = provider.AddMixer();
mixer0[kColorTest0] = {SK_ColorBLACK};
mixer0[kColorTest1] = AlphaBlend(SK_ColorRED, kColorTest0, 0x01);
provider.AddMixer()[kColorTest0] = {SK_ColorWHITE};
provider.AddPostprocessingMixer()[kColorTest0] =
GetColorWithMaxContrast(FromTransformInput());
EXPECT_NE(SK_ColorWHITE, provider.GetColor(kColorTest0));
EXPECT_FALSE(color_utils::IsDark(provider.GetColor(kColorTest1)));
}
TEST(ColorProviderTest, SetColorForTesting) {
ColorProvider provider;
provider.SetColorForTesting(kColorTest0, SK_ColorGREEN);
EXPECT_EQ(SK_ColorGREEN, provider.GetColor(kColorTest0));
EXPECT_EQ(gfx::kPlaceholderColor, provider.GetColor(kColorTest1));
provider.SetColorForTesting(kColorTest1, SK_ColorBLUE);
EXPECT_EQ(SK_ColorBLUE, provider.GetColor(kColorTest1));
}
} // namespace
} // namespace ui
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