third_party/WebKit/Source/platform/text/SegmentedStringTest.cpp

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#include "platform/text/SegmentedString.h"

#include "testing/gtest/include/gtest/gtest.h"

namespace blink {

TEST(SegmentedStringTest, CurrentChar) {
  SegmentedString original(String("cde"));
  {
    SegmentedString copied(original);
    SegmentedString assigned;
    assigned = original;
    EXPECT_EQ("cde", original.ToString());
    EXPECT_EQ('c', original.CurrentChar());
    EXPECT_EQ('c', copied.CurrentChar());
    EXPECT_EQ('c', assigned.CurrentChar());
  }
  original.Push('b');
  {
    SegmentedString copied(original);
    SegmentedString assigned;
    assigned = original;
    EXPECT_EQ("bcde", original.ToString());
    EXPECT_EQ('b', original.CurrentChar());
    EXPECT_EQ('b', copied.CurrentChar());
    EXPECT_EQ('b', assigned.CurrentChar());
  }
  original.Push('a');
  {
    SegmentedString copied(original);
    SegmentedString assigned;
    assigned = original;
    EXPECT_EQ("abcde", original.ToString());
    EXPECT_EQ('a', original.CurrentChar());
    EXPECT_EQ('a', copied.CurrentChar());
    EXPECT_EQ('a', assigned.CurrentChar());
  }
  original.Advance();
  {
    SegmentedString copied(original);
    SegmentedString assigned;
    assigned = original;
    EXPECT_EQ("bcde", original.ToString());
    EXPECT_EQ('b', original.CurrentChar());
    EXPECT_EQ('b', copied.CurrentChar());
    EXPECT_EQ('b', assigned.CurrentChar());
  }
}

TEST(SegmentedStringTest, Prepend) {
  SegmentedString s1("1");
  s1.Append(SegmentedString("2"));
  s1.Append(SegmentedString("3"));
  SegmentedString s2("4");
  s2.Append(SegmentedString("5"));
  s2.Append(SegmentedString("6"));

  s2.Prepend(s1, SegmentedString::PrependType::kUnconsume);

  EXPECT_EQ(s2.ToString(), String("123456"));
}

}  // namespace blink