| // Copyright 2010-2015, Google Inc. |
| // All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
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| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following disclaimer |
| // in the documentation and/or other materials provided with the |
| // distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived from |
| // this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "base/util.h" |
| #include "testing/base/public/googletest.h" |
| #include "testing/base/public/gunit.h" |
| #include "win32/tip/tip_surrounding_text.h" |
| |
| namespace mozc { |
| namespace win32 { |
| namespace tsf { |
| namespace { |
| |
| TEST(TipSurroundingTextUtilTest, MeasureCharactersBackward) { |
| { |
| const char kSource[] = "abcde"; |
| wstring source; |
| Util::UTF8ToWide(kSource, &source); |
| size_t characters_in_utf16 = 0; |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 0, &characters_in_utf16)); |
| EXPECT_EQ(0, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 1, &characters_in_utf16)); |
| EXPECT_EQ(1, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 5, &characters_in_utf16)); |
| EXPECT_EQ(5, characters_in_utf16); |
| |
| EXPECT_FALSE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 6, &characters_in_utf16)); |
| } |
| { |
| // "𠮟咤" |
| const char kSource[] = "\xF0\xA0\xAE\x9F\xE5\x92\xA4"; |
| wstring source; |
| Util::UTF8ToWide(kSource, &source); |
| size_t characters_in_utf16 = 0; |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 1, &characters_in_utf16)); |
| EXPECT_EQ(1, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 2, &characters_in_utf16)); |
| EXPECT_EQ(3, characters_in_utf16); |
| |
| EXPECT_FALSE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| source, 3, &characters_in_utf16)); |
| } |
| |
| const wchar_t kHighSurrogateStart = 0xd800; |
| const wchar_t kLowSurrogateStart = 0xdc00; |
| |
| // Only Low surrogate. |
| { |
| const wchar_t kSource[] = { |
| kLowSurrogateStart, kLowSurrogateStart, L'\0' |
| }; |
| size_t characters_in_utf16 = 0; |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 0, &characters_in_utf16)); |
| EXPECT_EQ(0, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 1, &characters_in_utf16)); |
| EXPECT_EQ(1, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 2, &characters_in_utf16)); |
| EXPECT_EQ(2, characters_in_utf16); |
| |
| EXPECT_FALSE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 3, &characters_in_utf16)); |
| } |
| |
| // Only High surrogate. |
| { |
| const wchar_t kSource[] = { |
| kHighSurrogateStart, kHighSurrogateStart, L'\0' |
| }; |
| size_t characters_in_utf16 = 0; |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 0, &characters_in_utf16)); |
| EXPECT_EQ(0, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 1, &characters_in_utf16)); |
| EXPECT_EQ(1, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 2, &characters_in_utf16)); |
| EXPECT_EQ(2, characters_in_utf16); |
| |
| EXPECT_FALSE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 3, &characters_in_utf16)); |
| } |
| |
| // An isolated high surrogate and one surrogate pair. |
| { |
| const wchar_t kSource[] = { |
| kHighSurrogateStart, kHighSurrogateStart, kLowSurrogateStart, L'\0' |
| }; |
| size_t characters_in_utf16 = 0; |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 0, &characters_in_utf16)); |
| EXPECT_EQ(0, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 1, &characters_in_utf16)); |
| EXPECT_EQ(2, characters_in_utf16); |
| |
| EXPECT_TRUE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 2, &characters_in_utf16)); |
| EXPECT_EQ(3, characters_in_utf16); |
| |
| EXPECT_FALSE(TipSurroundingTextUtil::MeasureCharactersBackward( |
| kSource, 3, &characters_in_utf16)); |
| } |
| } |
| |
| } // namespace |
| } // namespace tsf |
| } // namespace win32 |
| } // namespace mozc |