third_party/WebKit/Source/core/editing/iterators/CharacterIteratorTest.cpp

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#include "core/editing/iterators/CharacterIterator.h"

#include "core/editing/EphemeralRange.h"
#include "core/editing/testing/EditingTestBase.h"
#include "core/frame/LocalFrameView.h"

namespace blink {

class CharacterIteratorTest : public EditingTestBase {};

TEST_F(CharacterIteratorTest, SubrangeWithReplacedElements) {
  static const char* body_content =
      "<div id='div' contenteditable='true'>1<img src='foo.png'>345</div>";
  SetBodyContent(body_content);
  GetDocument().View()->UpdateAllLifecyclePhases();

  Node* div_node = GetDocument().getElementById("div");
  Range* entire_range = Range::Create(GetDocument(), div_node, 0, div_node, 3);

  EphemeralRange result =
      CalculateCharacterSubrange(EphemeralRange(entire_range), 2, 3);
  Node* text_node = div_node->lastChild();
  EXPECT_EQ(Position(text_node, 0), result.StartPosition());
  EXPECT_EQ(Position(text_node, 3), result.EndPosition());
}

TEST_F(CharacterIteratorTest, CollapsedSubrange) {
  static const char* body_content =
      "<div id='div' contenteditable='true'>hello</div>";
  SetBodyContent(body_content);
  GetDocument().View()->UpdateAllLifecyclePhases();

  Node* text_node = GetDocument().getElementById("div")->lastChild();
  Range* entire_range =
      Range::Create(GetDocument(), text_node, 1, text_node, 4);
  EXPECT_EQ(1u, entire_range->startOffset());
  EXPECT_EQ(4u, entire_range->endOffset());

  const EphemeralRange& result =
      CalculateCharacterSubrange(EphemeralRange(entire_range), 2, 0);
  EXPECT_EQ(Position(text_node, 3), result.StartPosition());
  EXPECT_EQ(Position(text_node, 3), result.EndPosition());
}

}  // namespace blink