Implement PaintRenderingContext2D off BaseRenderingContext2D

third_party/WebKit/Source/modules/csspaint/PaintRenderingContext2DTest.cpp

+// Copyright 2016 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 "modules/csspaint/PaintRenderingContext2D.h"
+
+#include "platform/graphics/ImageBuffer.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+namespace {
+
+static const int s_width = 50;
+static const int s_height = 75;
+
+class PaintRenderingContext2DTest : public ::testing::Test {
+protected:
+    void SetUp() override;
+
+    RefPtrWillBePersistent<PaintRenderingContext2D> m_ctx;
+};
+
+void PaintRenderingContext2DTest::SetUp()
+{
+    m_ctx = PaintRenderingContext2D::create(ImageBuffer::create(IntSize(s_width, s_height)));
+}
+
+void trySettingStrokeStyle(PaintRenderingContext2D* ctx, const String& expected, const String& value)
+{
+    StringOrCanvasGradientOrCanvasPattern result, arg, dummy;
+    dummy.setString("red");
+    arg.setString(value);
+    ctx->setStrokeStyle(dummy);
+    ctx->setStrokeStyle(arg);
+    ctx->strokeStyle(result);
+    EXPECT_EQ(expected, result.getAsString());
+}
+
+TEST_F(PaintRenderingContext2DTest, testParseColorOrCurrentColor)
+{
+    trySettingStrokeStyle(m_ctx.get(), "#0000ff", "blue");
+    trySettingStrokeStyle(m_ctx.get(), "#000000", "currentColor");
+}
+
+TEST_F(PaintRenderingContext2DTest, testWidthAndHeight)
+{
+    EXPECT_EQ(s_width, m_ctx->width());
+    EXPECT_EQ(s_height, m_ctx->height());
+}
+
+TEST_F(PaintRenderingContext2DTest, testBasicState)
+{
+    const double shadowBlurBefore = 2;
+    const double shadowBlurAfter = 3;
+
+    const String lineJoinBefore = "bevel";
+    const String lineJoinAfter = "round";
+
+    m_ctx->setShadowBlur(shadowBlurBefore);
+    m_ctx->setLineJoin(lineJoinBefore);
+    EXPECT_EQ(shadowBlurBefore, m_ctx->shadowBlur());
+    EXPECT_EQ(lineJoinBefore, m_ctx->lineJoin());
+
+    m_ctx->save();
+
+    m_ctx->setShadowBlur(shadowBlurAfter);
+    m_ctx->setLineJoin(lineJoinAfter);
+    EXPECT_EQ(shadowBlurAfter, m_ctx->shadowBlur());
+    EXPECT_EQ(lineJoinAfter, m_ctx->lineJoin());
+
+    m_ctx->restore();
+
+    EXPECT_EQ(shadowBlurBefore, m_ctx->shadowBlur());
+    EXPECT_EQ(lineJoinBefore, m_ctx->lineJoin());
+}
+
+} // namespace
+} // namespace blink