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// Copyright 2014 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 "third_party/blink/renderer/core/html/canvas/canvas_font_cache.h"
#include <memory>
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/local_frame_view.h"
#include "third_party/blink/renderer/core/html/canvas/canvas_context_creation_attributes_core.h"
#include "third_party/blink/renderer/core/html/canvas/canvas_rendering_context.h"
#include "third_party/blink/renderer/core/testing/page_test_base.h"
using testing::Mock;
namespace blink {
class CanvasFontCacheTest : public PageTestBase {
protected:
CanvasFontCacheTest();
void SetUp() override;
HTMLCanvasElement& CanvasElement() const { return *canvas_element_; }
CanvasRenderingContext* Context2d() const;
CanvasFontCache* Cache() { return GetDocument().GetCanvasFontCache(); }
private:
Persistent<HTMLCanvasElement> canvas_element_;
};
CanvasFontCacheTest::CanvasFontCacheTest() = default;
CanvasRenderingContext* CanvasFontCacheTest::Context2d() const {
// If the following check fails, perhaps you forgot to call createContext
// in your test?
EXPECT_NE(nullptr, CanvasElement().RenderingContext());
EXPECT_TRUE(CanvasElement().RenderingContext()->Is2d());
return CanvasElement().RenderingContext();
}
void CanvasFontCacheTest::SetUp() {
PageTestBase::SetUp();
GetDocument().documentElement()->SetInnerHTMLFromString(
"<body><canvas id='c'></canvas></body>");
UpdateAllLifecyclePhasesForTest();
canvas_element_ = ToHTMLCanvasElement(GetDocument().getElementById("c"));
String canvas_type("2d");
CanvasContextCreationAttributesCore attributes;
attributes.alpha = true;
canvas_element_->GetCanvasRenderingContext(canvas_type, attributes);
Context2d(); // Calling this for the checks
}
TEST_F(CanvasFontCacheTest, CacheHardLimit) {
String font_string;
unsigned i;
for (i = 0; i < Cache()->HardMaxFonts() + 1; i++) {
font_string = String::Number(i + 1) + "px sans-serif";
Context2d()->setFont(font_string);
if (i < Cache()->HardMaxFonts()) {
EXPECT_TRUE(Cache()->IsInCache("1px sans-serif"));
} else {
EXPECT_FALSE(Cache()->IsInCache("1px sans-serif"));
}
EXPECT_TRUE(Cache()->IsInCache(font_string));
}
}
TEST_F(CanvasFontCacheTest, PageVisibilityChange) {
Context2d()->setFont("10px sans-serif");
EXPECT_TRUE(Cache()->IsInCache("10px sans-serif"));
GetPage().SetIsHidden(/*is_hidden=*/true, /*initial_state=*/false);
EXPECT_FALSE(Cache()->IsInCache("10px sans-serif"));
Context2d()->setFont("15px sans-serif");
EXPECT_FALSE(Cache()->IsInCache("10px sans-serif"));
EXPECT_TRUE(Cache()->IsInCache("15px sans-serif"));
Context2d()->setFont("10px sans-serif");
EXPECT_TRUE(Cache()->IsInCache("10px sans-serif"));
EXPECT_FALSE(Cache()->IsInCache("15px sans-serif"));
GetPage().SetIsHidden(/*is_hidden=*/false, /*initial_state=*/false);
Context2d()->setFont("15px sans-serif");
Context2d()->setFont("10px sans-serif");
EXPECT_TRUE(Cache()->IsInCache("10px sans-serif"));
EXPECT_TRUE(Cache()->IsInCache("15px sans-serif"));
}
} // namespace blink
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