File: NthIndexCacheTest.cpp

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// 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 "core/dom/NthIndexCache.h"

#include "core/dom/Document.h"
#include "core/html/HTMLElement.h"
#include "core/testing/DummyPageHolder.h"
#include "testing/gtest/include/gtest/gtest.h"
#include <memory>

namespace blink {

class NthIndexCacheTest : public ::testing::Test {
 protected:
  void SetUp() override;

  Document& document() const { return m_dummyPageHolder->document(); }
  void setHtmlInnerHTML(const char* htmlContent);

 private:
  std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
};

void NthIndexCacheTest::SetUp() {
  m_dummyPageHolder = DummyPageHolder::create(IntSize(800, 600));
}

TEST_F(NthIndexCacheTest, NthIndex) {
  document().documentElement()->setInnerHTML(
      "<body>"
      "<span "
      "id=first></span><span></span><span></span><span></span><span></span>"
      "<span></span><span></span><span></span><span></span><span></span>"
      "Text does not count"
      "<span id=nth-last-child></span>"
      "<span id=nth-child></span>"
      "<span></span><span></span><span></span><span></span><span></span>"
      "<span></span><span></span><span></span><span></span><span "
      "id=last></span>"
      "</body>");

  NthIndexCache nthIndexCache(document());

  EXPECT_EQ(
      nthIndexCache.nthChildIndex(*document().getElementById("nth-child")),
      12U);
  EXPECT_EQ(nthIndexCache.nthLastChildIndex(
                *document().getElementById("nth-last-child")),
            12U);
}

}  // namespace blink