widetext_buffer_unittest.cpp

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// Copyright 2018 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
#include "core/fxcrt/widetext_buffer.h"
 
#include <utility>
 
#include "testing/gtest/include/gtest/gtest.h"
 
namespace fxcrt {
 
TEST(WideTextBuffer, EmptyBuf) {
  WideTextBuffer wtb;
  EXPECT_TRUE(wtb.GetWideSpan().empty());
  EXPECT_TRUE(wtb.AsStringView().IsEmpty());
  EXPECT_TRUE(wtb.MakeString().IsEmpty());
}
 
TEST(WideTextBuffer, OperatorLtLt) {
  WideTextBuffer wtb;
  wtb << "clams" << L"\u208c\u208e";
  EXPECT_EQ(wtb.MakeString(), L"clams\u208c\u208e");
}
 
TEST(WideTextBuffer, Deletion) {
  WideTextBuffer wtb;
  wtb << L"ABCDEFG";
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII("ABCDEFG"));
 
  wtb.Delete(1, 3);
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII("AEFG"));
 
  wtb.Delete(1, 0);
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII("AEFG"));
 
  wtb.Delete(0, 2);
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII("FG"));
 
  wtb.Delete(0, 2);
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII(""));
 
  wtb.Delete(0, 0);
  EXPECT_TRUE(wtb.AsStringView().EqualsASCII(""));
}
 
TEST(WideTextBuffer, Move) {
  WideTextBuffer wtb;
  wtb << "clams";
  EXPECT_EQ(wtb.MakeString(), L"clams");
 
  WideTextBuffer wtb2(std::move(wtb));
  EXPECT_EQ(wtb.MakeString(), L"");
  EXPECT_EQ(wtb2.MakeString(), L"clams");
 
  WideTextBuffer wtb3;
  wtb3 = std::move(wtb2);
  EXPECT_EQ(wtb2.MakeString(), L"");
  EXPECT_EQ(wtb3.MakeString(), L"clams");
}
 
}  // namespace fxcrt