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;

    Persistent<PaintRenderingContext2D> m_ctx;
};

void PaintRenderingContext2DTest::SetUp()
{
    m_ctx = PaintRenderingContext2D::create(ImageBuffer::create(IntSize(s_width, s_height)), false /* hasAlpha */);
}

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