third_party/blink/renderer/core/html/html_image_element_test.cc

// Copyright 2015 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/html_image_element.h"

#include <memory>
#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/testing/page_test_base.h"

namespace blink {

class HTMLImageElementTest : public PageTestBase {
 protected:
  static constexpr int kViewportWidth = 500;
  static constexpr int kViewportHeight = 600;

  void SetUp() override {
    PageTestBase::SetUp(IntSize(kViewportWidth, kViewportHeight));
  }
};

// Instantiate class constants. Not needed after C++17.
constexpr int HTMLImageElementTest::kViewportWidth;
constexpr int HTMLImageElementTest::kViewportHeight;

TEST_F(HTMLImageElementTest, width) {
  auto* image = HTMLImageElement::Create(GetDocument());
  image->setAttribute(html_names::kWidthAttr, "400");
  // TODO(yoav): `width` does not impact resourceWidth until we resolve
  // https://github.com/ResponsiveImagesCG/picture-element/issues/268
  EXPECT_EQ(500, image->GetResourceWidth().width);
  image->setAttribute(html_names::kSizesAttr, "100vw");
  EXPECT_EQ(500, image->GetResourceWidth().width);
}

TEST_F(HTMLImageElementTest, sourceSize) {
  auto* image = HTMLImageElement::Create(GetDocument());
  image->setAttribute(html_names::kWidthAttr, "400");
  EXPECT_EQ(kViewportWidth, image->SourceSize(*image));
  image->setAttribute(html_names::kSizesAttr, "50vw");
  EXPECT_EQ(250, image->SourceSize(*image));
}

}  // namespace blink