// Copyright 2012 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // Unit tests for eliding and formatting utility functions. #include "ui/gfx/text_elider.h" #include #include #include #include "base/files/file_path.h" #include "base/i18n/rtl.h" #include "base/logging.h" #include "base/run_loop.h" #include "base/strings/string_util.h" #include "base/strings/utf_string_conversions.h" #include "base/test/task_environment.h" #include "build/build_config.h" #include "testing/gtest/include/gtest/gtest.h" #include "ui/gfx/font.h" #include "ui/gfx/font_list.h" #include "ui/gfx/font_render_params.h" #include "ui/gfx/text_utils.h" namespace gfx { namespace { struct StringMappingTestCase { const std::u16string input; const std::u16string output; }; } // namespace TEST(TextEliderTest, ElideEmail) { // Test emails and their expected elided forms (from which the available // widths will be derived). // For elided forms in which both the username and domain must be elided: // the result (how many characters are left on each side) can be font // dependent. To avoid this, the username is prefixed with the characters // expected to remain in the domain. const auto cases = std::to_array({ {u"g@g.c", u"g@g.c"}, {u"g@g.c", u"…"}, {u"ga@co.ca", u"ga@c…a"}, {u"short@small.com", u"s…@s…"}, {u"short@small.com", u"s…@small.com"}, {u"short@longbutlotsofspace.com", u"short@longbutlotsofspace.com"}, {u"short@longbutnotverymuchspace.com", u"short@long….com"}, {u"la_short@longbutverytightspace.ca", u"la…@l…a"}, {u"longusername@gmail.com", u"long…@gmail.com"}, {u"elidetothemax@justfits.com", u"e…@justfits.com"}, {u"thatom_somelongemail@thatdoesntfit.com", u"thatom…@tha…om"}, {u"namefits@butthedomaindoesnt.com", u"namefits@butthedo…snt.com"}, {u"widthtootight@nospace.com", u"…"}, {u"nospaceforusername@l", u"…"}, {u"little@littlespace.com", u"l…@l…"}, {u"l@llllllllllllllllllllllll.com", u"l@lllll….com"}, {u"messed\"up@whyanat\"++@notgoogley.com", u"messed\"up@whyanat\"++@notgoogley.com"}, {u"messed\"up@whyanat\"++@notgoogley.com", u"messed\"up@why…@notgoogley.com"}, {u"noca_messed\"up@whyanat\"++@notgoogley.ca", u"noca…@no…ca"}, {u"at\"@@@@@@@@@...@@.@.@.@@@\"@madness.com", u"at\"@@@@@@@@@...@@.@.…@madness.com"}, // Special case: "m..." takes more than half of the available width; thus // the domain must elide to "l..." and not "l...l" as it must allow enough // space for the minimal username elision although its half of the // available width would normally allow it to elide to "l...l". {u"mmmmm@llllllllll", u"m…@l…"}, }); const FontList font_list; for (const auto& c : cases) { EXPECT_EQ(c.output, ElideText(c.input, font_list, GetStringWidthF(c.output, font_list), ELIDE_EMAIL)); } } TEST(TextEliderTest, ElideEmailMoreSpace) { const auto test_widths_extra_spaces = std::to_array({ 10, 1000, 100'000, }); const auto test_emails = std::to_array({ u"a@c", u"test@email.com", u"short@verysuperdupperlongdomain.com", u"supermegalongusername@withasuperlonnnggggdomain.gouv.qc.ca", }); const FontList font_list; for (const auto* test_email : test_emails) { const int mimimum_width = GetStringWidth(test_email, font_list); for (int extra_space : test_widths_extra_spaces) { // Extra space is available: the email should not be elided. EXPECT_EQ(test_email, ElideText(test_email, font_list, mimimum_width + extra_space, ELIDE_EMAIL)); } } } TEST(TextEliderTest, TestFilenameEliding) { const base::FilePath::StringType kPathSeparator = base::FilePath::StringType().append(1, base::FilePath::kSeparators[0]); struct Case { const base::FilePath::StringType input; const std::u16string output; // If this value is specified, we will try to cut the path down to the // render width of this string; if not specified, output will be used. const std::u16string using_width_of = std::u16string(); }; const auto cases = std::to_array( {{FILE_PATH_LITERAL(""), u""}, {FILE_PATH_LITERAL("."), u"."}, {FILE_PATH_LITERAL("filename.exe"), u"filename.exe"}, {FILE_PATH_LITERAL(".longext"), u".longext"}, {FILE_PATH_LITERAL("pie"), u"pie"}, {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") + kPathSeparator + FILE_PATH_LITERAL("filename.pie"), u"filename.pie"}, {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") + kPathSeparator + FILE_PATH_LITERAL("longfilename.pie"), u"long….pie"}, {FILE_PATH_LITERAL("http://path.com/filename.pie"), u"filename.pie"}, {FILE_PATH_LITERAL("http://path.com/longfilename.pie"), u"long….pie"}, {FILE_PATH_LITERAL("piesmashingtacularpants"), u"pie…"}, {FILE_PATH_LITERAL(".piesmashingtacularpants"), u".pie…"}, {FILE_PATH_LITERAL("cheese."), u"cheese."}, {FILE_PATH_LITERAL("file name.longext"), u"file….longext"}, {FILE_PATH_LITERAL("fil ename.longext"), u"fil….longext", u"fil ….longext"}, {FILE_PATH_LITERAL("filename.longext"), u"file….longext"}, {FILE_PATH_LITERAL("filename.middleext.longext"), u"filename.mid….longext"}, {FILE_PATH_LITERAL("filename.superduperextremelylongext"), u"filename.sup…emelylongext"}, {FILE_PATH_LITERAL( "filenamereallylongtext.superdeduperextremelylongext"), u"filenamereall…emelylongext"}, {FILE_PATH_LITERAL( "file.name.really.long.text.superduperextremelylongext"), u"file.name.re…emelylongext"}}); static const FontList font_list; for (const auto& c : cases) { std::u16string using_width_of = c.using_width_of.empty() ? c.output : c.using_width_of; EXPECT_EQ(base::i18n::GetDisplayStringInLTRDirectionality(c.output), ElideFilename(base::FilePath(c.input), font_list, GetStringWidthF(using_width_of, font_list))); } } TEST(TextEliderTest, ElideTextTruncate) { const FontList font_list; const float kTestWidth = GetStringWidthF(u"Test", font_list); struct Case { const char16_t* input; float width; const char16_t* output; }; const auto cases = std::to_array({ {u"", 0, u""}, {u"Test", 0, u""}, {u"", kTestWidth, u""}, {u"Tes", kTestWidth, u"Tes"}, {u"Test", kTestWidth, u"Test"}, {u"Tests", kTestWidth, u"Test"}, }); for (const auto& c : cases) { EXPECT_EQ(c.output, ElideText(c.input, font_list, c.width, TRUNCATE)); } } TEST(TextEliderTest, ElideTextEllipsis) { const FontList font_list; const float kTestWidth = GetStringWidthF(u"Test", font_list); const float kEllipsisWidth = GetStringWidthF(u"…", font_list); struct Case { const char16_t* input; float width; const char16_t* output; }; const auto cases = std::to_array({ {u"", 0, u""}, {u"Test", 0, u""}, {u"Test", kEllipsisWidth, u"…"}, {u"", kTestWidth, u""}, {u"Tes", kTestWidth, u"Tes"}, {u"Test", kTestWidth, u"Test"}, }); for (const auto& c : cases) { EXPECT_EQ(c.output, ElideText(c.input, font_list, c.width, ELIDE_TAIL)); } } TEST(TextEliderTest, ElideTextEllipsisFront) { const FontList font_list; const float kTestWidth = GetStringWidthF(u"Test", font_list); const float kEllipsisWidth = GetStringWidthF(u"…", font_list); const float kEllipsis23Width = GetStringWidthF(u"…23", font_list); struct Case { const char16_t* input; float width; const std::u16string output; }; const auto cases = std::to_array({ {u"", 0, std::u16string()}, {u"Test", 0, std::u16string()}, {u"Test", kEllipsisWidth, u"…"}, {u"", kTestWidth, std::u16string()}, {u"Tes", kTestWidth, u"Tes"}, {u"Test", kTestWidth, u"Test"}, {u"Test123", kEllipsis23Width, u"…23"}, }); for (const auto& c : cases) { EXPECT_EQ(c.output, ElideText(c.input, font_list, c.width, ELIDE_HEAD)); } } // Checks that all occurrences of |first_char| are followed by |second_char| and // all occurrences of |second_char| are preceded by |first_char| in |text|. Can // be used to test surrogate pairs or two-character combining sequences. static void CheckCodeUnitPairs(const std::u16string& text, char16_t first_char, char16_t second_char) { for (size_t index = 0; index < text.length(); ++index) { EXPECT_NE(second_char, text[index]); if (text[index] == first_char) { ASSERT_LT(++index, text.length()); EXPECT_EQ(second_char, text[index]); } } } // Test that both both UTF-16 surrogate pairs and combining character sequences // do not get split by ElideText. TEST(TextEliderTest, ElideTextAtomicSequences) { #if BUILDFLAG(IS_WIN) // Needed to bypass DCHECK in GetFallbackFont. base::test::SingleThreadTaskEnvironment task_environment( base::test::SingleThreadTaskEnvironment::MainThreadType::UI); #endif const FontList font_list; std::vector pairs; // The below is 'MUSICAL SYMBOL G CLEF' (U+1D11E), which is represented in // UTF-16 as two code units forming a surrogate pair: 0xD834 0xDD1E. pairs.push_back(u"\U0001d11e"); // The below is a Devanagari two-character combining sequence U+0921 U+093F. // The sequence forms a single display character and should not be separated. pairs.push_back(u"\u0921\u093f"); for (const std::u16string& pair : pairs) { char16_t first_char = pair[0]; char16_t second_char = pair[1]; std::u16string test_string = pair + u"x" + pair; SCOPED_TRACE(test_string); const float test_string_width = GetStringWidthF(test_string, font_list); std::u16string result; // Elide |text_string| to all possible widths and check that no instance of // |pair| was split in two. for (float width = 0; width <= test_string_width; width++) { result = ElideText(test_string, font_list, width, TRUNCATE); CheckCodeUnitPairs(result, first_char, second_char); result = ElideText(test_string, font_list, width, ELIDE_TAIL); CheckCodeUnitPairs(result, first_char, second_char); result = ElideText(test_string, font_list, width, ELIDE_MIDDLE); CheckCodeUnitPairs(result, first_char, second_char); result = ElideText(test_string, font_list, width, ELIDE_HEAD); CheckCodeUnitPairs(result, first_char, second_char); } } } TEST(TextEliderTest, ElideTextLongStrings) { std::u16string data_scheme(u"data:text/plain,"); size_t data_scheme_length = data_scheme.length(); std::u16string ten_a(10, 'a'); std::u16string hundred_a(100, 'a'); std::u16string thousand_a(1000, 'a'); std::u16string ten_thousand_a(10'000, 'a'); std::u16string hundred_thousand_a(100'000, 'a'); std::u16string million_a(1'000'000, 'a'); // TODO(gbillock): Improve these tests by adding more string diversity and // doing string compares instead of length compares. See bug 338836. size_t number_of_as = 156; std::u16string long_string_end(data_scheme + std::u16string(number_of_as, 'a') + u"…"); const auto cases_end = std::to_array({ {data_scheme + ten_a, data_scheme + ten_a}, {data_scheme + hundred_a, data_scheme + hundred_a}, {data_scheme + thousand_a, long_string_end}, {data_scheme + ten_thousand_a, long_string_end}, {data_scheme + hundred_thousand_a, long_string_end}, {data_scheme + million_a, long_string_end}, }); const FontList font_list; float ellipsis_width = GetStringWidthF(u"…", font_list); for (const auto& c : cases_end) { // Compare sizes rather than actual contents because if the test fails, // output is rather long. EXPECT_EQ(c.output.size(), ElideText(c.input, font_list, GetStringWidthF(c.output, font_list), ELIDE_TAIL) .size()); EXPECT_EQ(u"…", ElideText(c.input, font_list, ellipsis_width, ELIDE_TAIL)); } size_t number_of_trailing_as = (data_scheme_length + number_of_as) / 2; std::u16string long_string_middle( data_scheme + std::u16string(number_of_as - number_of_trailing_as, 'a') + u"…" + std::u16string(number_of_trailing_as, 'a')); #if !BUILDFLAG(IS_IOS) long_string_middle += u"…"; #endif const auto cases_middle = std::to_array({ {data_scheme + ten_a, data_scheme + ten_a}, {data_scheme + hundred_a, data_scheme + hundred_a}, {data_scheme + thousand_a, long_string_middle}, {data_scheme + ten_thousand_a, long_string_middle}, {data_scheme + hundred_thousand_a, long_string_middle}, {data_scheme + million_a, long_string_middle}, }); for (const auto& c : cases_middle) { // Compare sizes rather than actual contents because if the test fails, // output is rather long. EXPECT_EQ(c.output.size(), ElideText(c.input, font_list, GetStringWidthF(c.output, font_list), ELIDE_MIDDLE) .size()); EXPECT_EQ(u"…", ElideText(c.input, font_list, ellipsis_width, ELIDE_MIDDLE)); } std::u16string long_string_beginning(u"…" + std::u16string(number_of_as, 'a')); #if !BUILDFLAG(IS_IOS) long_string_beginning += u"…"; #endif const auto cases_beginning = std::to_array({ {data_scheme + ten_a, data_scheme + ten_a}, {data_scheme + hundred_a, data_scheme + hundred_a}, {data_scheme + thousand_a, long_string_beginning}, {data_scheme + ten_thousand_a, long_string_beginning}, {data_scheme + hundred_thousand_a, long_string_beginning}, {data_scheme + million_a, long_string_beginning}, }); for (const auto& c : cases_beginning) { EXPECT_EQ(c.output.size(), ElideText(c.input, font_list, GetStringWidthF(c.output, font_list), ELIDE_HEAD) .size()); EXPECT_EQ(u"…", ElideText(c.input, font_list, ellipsis_width, ELIDE_HEAD)); } } // Detailed tests for StringSlicer. These are faster and test more of the edge // cases than the above tests which are more end-to-end. TEST(TextEliderTest, StringSlicerBasicTest) { // Must store strings in variables (StringSlicer retains a reference to them). std::u16string text(u"Hello, world!"); std::u16string ellipsis(u"…"); StringSlicer slicer(text, ellipsis, false, false); EXPECT_EQ(u"", slicer.CutString(0, false)); EXPECT_EQ(u"…", slicer.CutString(0, true)); EXPECT_EQ(u"Hell", slicer.CutString(4, false)); EXPECT_EQ(u"Hell…", slicer.CutString(4, true)); EXPECT_EQ(text, slicer.CutString(text.length(), false)); EXPECT_EQ(text + u"…", slicer.CutString(text.length(), true)); StringSlicer slicer_begin(text, ellipsis, false, true); EXPECT_EQ(u"rld!", slicer_begin.CutString(4, false)); EXPECT_EQ(u"…rld!", slicer_begin.CutString(4, true)); StringSlicer slicer_mid(text, ellipsis, true, false); EXPECT_EQ(u"Held!", slicer_mid.CutString(5, false)); EXPECT_EQ(u"Hel…d!", slicer_mid.CutString(5, true)); } TEST(TextEliderTest, StringSlicerWhitespace_UseDefault) { // Must store strings in variables (StringSlicer retains a reference to them). std::u16string text(u"Hello, world!"); std::u16string ellipsis(u"…"); // Eliding the end of a string should result in whitespace being removed // before the ellipsis by default. StringSlicer slicer_end(text, ellipsis, false, false); EXPECT_EQ(u"Hello,…", slicer_end.CutString(6, true)); EXPECT_EQ(u"Hello,…", slicer_end.CutString(7, true)); EXPECT_EQ(u"Hello, w…", slicer_end.CutString(8, true)); // Eliding the start of a string should result in whitespace being removed // after the ellipsis by default. StringSlicer slicer_begin(text, ellipsis, false, true); EXPECT_EQ(u"…world!", slicer_begin.CutString(6, true)); EXPECT_EQ(u"…world!", slicer_begin.CutString(7, true)); EXPECT_EQ(u"…, world!", slicer_begin.CutString(8, true)); // Eliding the middle of a string should *NOT* result in whitespace being // removed around the ellipsis by default. text = u"Hey world!"; StringSlicer slicer_mid(text, ellipsis, true, false); EXPECT_EQ(u"Hey…ld!", slicer_mid.CutString(6, true)); EXPECT_EQ(u"Hey …ld!", slicer_mid.CutString(7, true)); EXPECT_EQ(u"Hey …rld!", slicer_mid.CutString(8, true)); } TEST(TextEliderTest, StringSlicerWhitespace_NoTrim) { // Must store strings in variables (StringSlicer retains a reference to them). std::u16string text(u"Hello, world!"); std::u16string ellipsis(u"…"); // Eliding the end of a string should not result in whitespace being removed // before the ellipsis in no-trim mode. StringSlicer slicer_end(text, ellipsis, false, false, false); EXPECT_EQ(u"Hello,…", slicer_end.CutString(6, true)); EXPECT_EQ(u"Hello, …", slicer_end.CutString(7, true)); EXPECT_EQ(u"Hello, w…", slicer_end.CutString(8, true)); // Eliding the start of a string should not result in whitespace being removed // after the ellipsis in no-trim mode. StringSlicer slicer_begin(text, ellipsis, false, true, false); EXPECT_EQ(u"…world!", slicer_begin.CutString(6, true)); EXPECT_EQ(u"… world!", slicer_begin.CutString(7, true)); EXPECT_EQ(u"…, world!", slicer_begin.CutString(8, true)); // Eliding the middle of a string should *NOT* result in whitespace being // removed around the ellipsis in no-trim mode. text = u"Hey world!"; StringSlicer slicer_mid(text, ellipsis, true, false, false); EXPECT_EQ(u"Hey…ld!", slicer_mid.CutString(6, true)); EXPECT_EQ(u"Hey …ld!", slicer_mid.CutString(7, true)); EXPECT_EQ(u"Hey …rld!", slicer_mid.CutString(8, true)); } TEST(TextEliderTest, StringSlicerWhitespace_Trim) { // Must store strings in variables (StringSlicer retains a reference to them). std::u16string text(u"Hello, world!"); std::u16string ellipsis(u"…"); // Eliding the end of a string should result in whitespace being removed // before the ellipsis in trim mode. StringSlicer slicer_end(text, ellipsis, false, false, true); EXPECT_EQ(u"Hello,…", slicer_end.CutString(6, true)); EXPECT_EQ(u"Hello,…", slicer_end.CutString(7, true)); EXPECT_EQ(u"Hello, w…", slicer_end.CutString(8, true)); // Eliding the start of a string should result in whitespace being removed // after the ellipsis in trim mode. StringSlicer slicer_begin(text, ellipsis, false, true, true); EXPECT_EQ(u"…world!", slicer_begin.CutString(6, true)); EXPECT_EQ(u"…world!", slicer_begin.CutString(7, true)); EXPECT_EQ(u"…, world!", slicer_begin.CutString(8, true)); // Eliding the middle of a string *should* result in whitespace being removed // around the ellipsis in trim mode. text = u"Hey world!"; StringSlicer slicer_mid(text, ellipsis, true, false, true); EXPECT_EQ(u"Hey…ld!", slicer_mid.CutString(6, true)); EXPECT_EQ(u"Hey…ld!", slicer_mid.CutString(7, true)); EXPECT_EQ(u"Hey…rld!", slicer_mid.CutString(8, true)); } TEST(TextEliderTest, StringSlicer_ElideMiddle_MultipleWhitespace) { // Must store strings in variables (StringSlicer retains a reference to them). std::u16string text(u"Hey U man"); std::u16string ellipsis(u"…"); // Eliding the middle of a string should not result in whitespace being // removed around the ellipsis in default whitespace mode. StringSlicer slicer_default(text, ellipsis, true, false); EXPECT_EQ(u"Hey…man", slicer_default.CutString(6, true)); EXPECT_EQ(u"Hey …man", slicer_default.CutString(7, true)); EXPECT_EQ(u"Hey … man", slicer_default.CutString(8, true)); EXPECT_EQ(u"Hey … man", slicer_default.CutString(9, true)); EXPECT_EQ(u"Hey … man", slicer_default.CutString(10, true)); // Eliding the middle of a string should not result in whitespace being // removed around the ellipsis in no-trim mode. text = u"Hey U man"; StringSlicer slicer_notrim(text, ellipsis, true, false, false); EXPECT_EQ(u"Hey…man", slicer_notrim.CutString(6, true)); EXPECT_EQ(u"Hey …man", slicer_notrim.CutString(7, true)); EXPECT_EQ(u"Hey … man", slicer_notrim.CutString(8, true)); EXPECT_EQ(u"Hey … man", slicer_notrim.CutString(9, true)); EXPECT_EQ(u"Hey … man", slicer_notrim.CutString(10, true)); // Eliding the middle of a string *should* result in whitespace being removed // around the ellipsis in trim mode. text = u"Hey U man"; StringSlicer slicer_trim(text, ellipsis, true, false, true); EXPECT_EQ(u"Hey…man", slicer_trim.CutString(6, true)); EXPECT_EQ(u"Hey…man", slicer_trim.CutString(7, true)); EXPECT_EQ(u"Hey…man", slicer_trim.CutString(8, true)); EXPECT_EQ(u"Hey…man", slicer_trim.CutString(9, true)); EXPECT_EQ(u"Hey…man", slicer_trim.CutString(10, true)); } TEST(TextEliderTest, StringSlicerSurrogate) { // The below is 'MUSICAL SYMBOL G CLEF' (U+1D11E), which is represented in // UTF-16 as two code units forming a surrogate pair: 0xD834 0xDD1E. const std::u16string kSurrogate = u"\U0001d11e"; ASSERT_EQ(2u, kSurrogate.size()); ASSERT_EQ(u'\xD834', kSurrogate[0]); ASSERT_EQ(u'\xDD1E', kSurrogate[1]); std::u16string text(u"abc" + kSurrogate + u"xyz"); std::u16string ellipsis(u"…"); StringSlicer slicer(text, ellipsis, false, false); // Cut surrogate on the right. Should round left and exclude the surrogate. EXPECT_EQ(u"…", slicer.CutString(0, true)); EXPECT_EQ(u"abc…", slicer.CutString(4, true)); EXPECT_EQ(text + u"…", slicer.CutString(text.length(), true)); // Cut surrogate on the left. Should round right and exclude the surrogate. StringSlicer slicer_begin(text, ellipsis, false, true); EXPECT_EQ(u"…xyz", slicer_begin.CutString(4, true)); // Cut surrogate in the middle. Should round right and exclude the surrogate. std::u16string short_text(u"abc" + kSurrogate); StringSlicer slicer_mid(short_text, ellipsis, true, false); EXPECT_EQ(u"a…", slicer_mid.CutString(2, true)); // String that starts with a dangling trailing surrogate. std::u16string dangling_trailing_text = kSurrogate.substr(1); StringSlicer slicer_dangling_trailing(dangling_trailing_text, ellipsis, false, false); EXPECT_EQ(u"…", slicer_dangling_trailing.CutString(0, true)); EXPECT_EQ(dangling_trailing_text + u"…", slicer_dangling_trailing.CutString(1, true)); } TEST(TextEliderTest, StringSlicerCombining) { // The following string contains three combining character sequences (one for // each category of combining mark): // LATIN SMALL LETTER E + COMBINING ACUTE ACCENT + COMBINING CEDILLA // LATIN SMALL LETTER X + COMBINING ENCLOSING KEYCAP // DEVANAGARI LETTER DDA + DEVANAGARI VOWEL SIGN I std::u16string text(u"e\u0301\u0327 x\u20e3 \u0921\u093f"); std::u16string ellipsis(u"…"); StringSlicer slicer(text, ellipsis, false, false); // Attempt to cut the string for all lengths. When a combining sequence is // cut, it should always round left and exclude the combining sequence. // Whitespace is also cut adjacent to the ellipsis. // First sequence: EXPECT_EQ(u"…", slicer.CutString(0, true)); EXPECT_EQ(u"…", slicer.CutString(1, true)); EXPECT_EQ(u"…", slicer.CutString(2, true)); EXPECT_EQ(text.substr(0, 3) + u"…", slicer.CutString(3, true)); // Second sequence: EXPECT_EQ(text.substr(0, 3) + u"…", slicer.CutString(4, true)); EXPECT_EQ(text.substr(0, 3) + u"…", slicer.CutString(5, true)); EXPECT_EQ(text.substr(0, 6) + u"…", slicer.CutString(6, true)); // Third sequence: EXPECT_EQ(text.substr(0, 6) + u"…", slicer.CutString(7, true)); EXPECT_EQ(text.substr(0, 6) + u"…", slicer.CutString(8, true)); EXPECT_EQ(text + u"…", slicer.CutString(9, true)); // Cut string in the middle, splitting the second sequence in half. Should // round both left and right, excluding the second sequence. StringSlicer slicer_mid(text, ellipsis, true, false); EXPECT_EQ(text.substr(0, 4) + u"…" + text.substr(6), slicer_mid.CutString(9, true)); // String that starts with a dangling combining mark. char16_t dangling_mark_chars[] = {text[1], 0}; std::u16string dangling_mark_text(dangling_mark_chars); StringSlicer slicer_dangling_mark(dangling_mark_text, ellipsis, false, false); EXPECT_EQ(u"…", slicer_dangling_mark.CutString(0, true)); EXPECT_EQ(dangling_mark_text + u"…", slicer_dangling_mark.CutString(1, true)); } TEST(TextEliderTest, StringSlicerCombiningSurrogate) { // The ultimate test: combining sequences comprised of surrogate pairs. // The following string contains a single combining character sequence: // MUSICAL SYMBOL G CLEF (U+1D11E) + MUSICAL SYMBOL COMBINING FLAG-1 (U+1D16E) // Represented as four UTF-16 code units. std::u16string text(u"\U0001d11e\U0001d16e"); std::u16string ellipsis(u"…"); StringSlicer slicer(text, ellipsis, false, false); // Attempt to cut the string for all lengths. Should always round left and // exclude the combining sequence. EXPECT_EQ(u"…", slicer.CutString(0, true)); EXPECT_EQ(u"…", slicer.CutString(1, true)); EXPECT_EQ(u"…", slicer.CutString(2, true)); EXPECT_EQ(u"…", slicer.CutString(3, true)); EXPECT_EQ(text + u"…", slicer.CutString(4, true)); // Cut string in the middle. Should exclude the sequence. StringSlicer slicer_mid(text, ellipsis, true, false); EXPECT_EQ(u"…", slicer_mid.CutString(4, true)); } TEST(TextEliderTest, ElideString) { struct Case { const char16_t* input; size_t max_len; bool result; const char16_t* output; }; const auto cases = std::to_array( {{u"Hello", 0, true, u""}, {u"", 0, false, u""}, {u"Hello, my name is Tom", 1, true, u"H"}, {u"Hello, my name is Tom", 2, true, u"He"}, {u"Hello, my name is Tom", 3, true, u"H.m"}, {u"Hello, my name is Tom", 4, true, u"H..m"}, {u"Hello, my name is Tom", 5, true, u"H...m"}, {u"Hello, my name is Tom", 6, true, u"He...m"}, {u"Hello, my name is Tom", 7, true, u"He...om"}, {u"Hello, my name is Tom", 10, true, u"Hell...Tom"}, {u"Hello, my name is Tom", 100, false, u"Hello, my name is Tom"}}); for (const auto& c : cases) { std::u16string output; EXPECT_EQ(c.result, ElideString(c.input, c.max_len, &output)); EXPECT_EQ(c.output, output); } } TEST(TextEliderTest, ElideRectangleText) { const FontList font_list; const int line_height = font_list.GetHeight(); const float test_width = GetStringWidthF(u"Test", font_list); struct Case { const char16_t* input; float available_pixel_width; int available_pixel_height; bool truncated_y; const char16_t* output; }; const auto cases = std::to_array({ {u"", 0, 0, false, nullptr}, {u"", 1, 1, false, nullptr}, {u"Test", test_width, 0, true, nullptr}, {u"Test", test_width, 1, false, u"Test"}, {u"Test", test_width, line_height, false, u"Test"}, {u"Test Test", test_width, line_height, true, u"Test"}, {u"Test Test", test_width, line_height + 1, false, u"Test|Test"}, {u"Test Test", test_width, line_height * 2, false, u"Test|Test"}, {u"Test Test", test_width, line_height * 3, false, u"Test|Test"}, {u"Test Test", test_width * 2, line_height * 2, false, u"Test|Test"}, {u"Test Test", test_width * 3, line_height, false, u"Test Test"}, {u"Test\nTest", test_width * 3, line_height * 2, false, u"Test|Test"}, {u"Te\nst Te", test_width, line_height * 3, false, u"Te|st|Te"}, {u"\nTest", test_width, line_height * 2, false, u"|Test"}, {u"\nTest", test_width, line_height, true, u""}, {u"\n\nTest", test_width, line_height * 3, false, u"||Test"}, {u"\n\nTest", test_width, line_height * 2, true, u"|"}, {u"Test\n", 2 * test_width, line_height * 5, false, u"Test|"}, {u"Test\n\n", 2 * test_width, line_height * 5, false, u"Test||"}, {u"Test\n\n\n", 2 * test_width, line_height * 5, false, u"Test|||"}, {u"Test\nTest\n\n", 2 * test_width, line_height * 5, false, u"Test|Test||"}, {u"Test\n\nTest\n", 2 * test_width, line_height * 5, false, u"Test||Test|"}, {u"Test\n\n\nTest", 2 * test_width, line_height * 5, false, u"Test|||Test"}, {u"Te ", test_width, line_height, false, u"Te"}, {u"Te Te Test", test_width, 3 * line_height, false, u"Te|Te|Test"}, }); for (const auto& c : cases) { std::vector lines; EXPECT_EQ(c.truncated_y ? INSUFFICIENT_SPACE_VERTICAL : 0, ElideRectangleText(c.input, font_list, c.available_pixel_width, c.available_pixel_height, TRUNCATE_LONG_WORDS, &lines)); if (c.output) { const std::u16string result = base::JoinString(lines, u"|"); EXPECT_EQ(c.output, result); } else { EXPECT_TRUE(lines.empty()); } } } TEST(TextEliderTest, ElideRectangleTextFirstWordTruncated) { const FontList font_list; const int line_height = font_list.GetHeight(); const float test_width = GetStringWidthF(u"Test", font_list); const float tes_width = GetStringWidthF(u"Tes", font_list); std::vector lines; auto result_for_width = [&](const char16_t* input, float width) { lines.clear(); return ElideRectangleText(input, font_list, width, line_height * 4, WRAP_LONG_WORDS, &lines); }; // Test base case. EXPECT_EQ(0, result_for_width(u"Test", test_width)); EXPECT_EQ(1u, lines.size()); EXPECT_EQ(u"Test", lines[0]); // First word truncated. EXPECT_EQ(INSUFFICIENT_SPACE_FOR_FIRST_WORD, result_for_width(u"Test", tes_width)); EXPECT_EQ(2u, lines.size()); EXPECT_EQ(u"Tes", lines[0]); EXPECT_EQ(u"t", lines[1]); // Two words truncated. EXPECT_EQ(INSUFFICIENT_SPACE_FOR_FIRST_WORD, result_for_width(u"Test\nTest", tes_width)); EXPECT_EQ(4u, lines.size()); EXPECT_EQ(u"Tes", lines[0]); EXPECT_EQ(u"t", lines[1]); EXPECT_EQ(u"Tes", lines[2]); EXPECT_EQ(u"t", lines[3]); // Word truncated, but not the first. EXPECT_EQ(0, result_for_width(u"T Test", tes_width)); EXPECT_EQ(3u, lines.size()); EXPECT_EQ(u"T", lines[0]); EXPECT_EQ(u"Tes", lines[1]); EXPECT_EQ(u"t", lines[2]); // Leading \n. EXPECT_EQ(0, result_for_width(u"\nTest", tes_width)); EXPECT_EQ(3u, lines.size()); EXPECT_EQ(u"", lines[0]); EXPECT_EQ(u"Tes", lines[1]); EXPECT_EQ(u"t", lines[2]); } TEST(TextEliderTest, ElideRectangleTextPunctuation) { const FontList font_list; const int line_height = font_list.GetHeight(); const float test_width = GetStringWidthF(u"Test", font_list); const float test_t_width = GetStringWidthF(u"Test T", font_list); constexpr int kResultMask = INSUFFICIENT_SPACE_HORIZONTAL | INSUFFICIENT_SPACE_VERTICAL; struct Case { const char16_t* input; float available_pixel_width; int available_pixel_height; bool wrap_words; bool truncated_x; const char16_t* output; }; const auto cases = std::to_array({ {u"Test T.", test_t_width, line_height * 2, false, false, u"Test|T."}, {u"Test T ?", test_t_width, line_height * 2, false, false, u"Test|T ?"}, {u"Test. Test", test_width, line_height * 3, false, true, u"Test|Test"}, {u"Test. Test", test_width, line_height * 3, true, false, u"Test|.|Test"}, }); for (const auto& c : cases) { std::vector lines; const WordWrapBehavior wrap_behavior = (c.wrap_words ? WRAP_LONG_WORDS : TRUNCATE_LONG_WORDS); EXPECT_EQ( c.truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0, ElideRectangleText(c.input, font_list, c.available_pixel_width, c.available_pixel_height, wrap_behavior, &lines) & kResultMask); if (c.output) { const std::u16string result = base::JoinString(lines, u"|"); EXPECT_EQ(c.output, result); } else { EXPECT_TRUE(lines.empty()); } } } TEST(TextEliderTest, ElideRectangleTextLongWords) { const FontList font_list; const int kAvailableHeight = 1000; const std::u16string kElidedTesting = u"Tes…"; const float elided_width = GetStringWidthF(kElidedTesting, font_list); const float test_width = GetStringWidthF(u"Test", font_list); constexpr int kResultMask = INSUFFICIENT_SPACE_HORIZONTAL | INSUFFICIENT_SPACE_VERTICAL; struct Case { const char16_t* input; float available_pixel_width; WordWrapBehavior wrap_behavior; bool truncated_x; const char16_t* output; }; const auto cases = std::to_array({ {u"Testing", test_width, IGNORE_LONG_WORDS, false, u"Testing"}, {u"X Testing", test_width, IGNORE_LONG_WORDS, false, u"X|Testing"}, {u"Test Testing", test_width, IGNORE_LONG_WORDS, false, u"Test|Testing"}, {u"Test\nTesting", test_width, IGNORE_LONG_WORDS, false, u"Test|Testing"}, {u"Test Tests ", test_width, IGNORE_LONG_WORDS, false, u"Test|Tests"}, {u"Test Tests T", test_width, IGNORE_LONG_WORDS, false, u"Test|Tests|T"}, {u"Testing", elided_width, ELIDE_LONG_WORDS, true, u"Tes…"}, {u"X Testing", elided_width, ELIDE_LONG_WORDS, true, u"X|Tes…"}, {u"Test Testing", elided_width, ELIDE_LONG_WORDS, true, u"Test|Tes…"}, {u"Test\nTesting", elided_width, ELIDE_LONG_WORDS, true, u"Test|Tes…"}, {u"Testing", test_width, TRUNCATE_LONG_WORDS, true, u"Test"}, {u"X Testing", test_width, TRUNCATE_LONG_WORDS, true, u"X|Test"}, {u"Test Testing", test_width, TRUNCATE_LONG_WORDS, true, u"Test|Test"}, {u"Test\nTesting", test_width, TRUNCATE_LONG_WORDS, true, u"Test|Test"}, {u"Test Tests ", test_width, TRUNCATE_LONG_WORDS, true, u"Test|Test"}, {u"Test Tests T", test_width, TRUNCATE_LONG_WORDS, true, u"Test|Test|T"}, {u"Testing", test_width, WRAP_LONG_WORDS, false, u"Test|ing"}, {u"X Testing", test_width, WRAP_LONG_WORDS, false, u"X|Test|ing"}, {u"Test Testing", test_width, WRAP_LONG_WORDS, false, u"Test|Test|ing"}, {u"Test\nTesting", test_width, WRAP_LONG_WORDS, false, u"Test|Test|ing"}, {u"Test Tests ", test_width, WRAP_LONG_WORDS, false, u"Test|Test|s"}, {u"Test Tests T", test_width, WRAP_LONG_WORDS, false, u"Test|Test|s T"}, {u"TestTestTest", test_width, WRAP_LONG_WORDS, false, u"Test|Test|Test"}, {u"TestTestTestT", test_width, WRAP_LONG_WORDS, false, u"Test|Test|Test|T"}, }); for (const auto& c : cases) { std::vector lines; EXPECT_EQ(c.truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0, ElideRectangleText(c.input, font_list, c.available_pixel_width, kAvailableHeight, c.wrap_behavior, &lines) & kResultMask); std::u16string expected_output(c.output); const std::u16string result = base::JoinString(lines, u"|"); EXPECT_EQ(expected_output, result); } } // This test is to make sure that the width of each wrapped line does not // exceed the available width. On some platform like Mac, this test used to // fail because the truncated integer width is returned for the string // and the accumulation of the truncated values causes the elide function // to wrap incorrectly. TEST(TextEliderTest, ElideRectangleTextCheckLineWidth) { FontList font_list; #if BUILDFLAG(IS_MAC) // Use a specific font to expose the line width exceeding problem. font_list = FontList(Font("LucidaGrande", 12)); #endif const float kAvailableWidth = 235; const int kAvailableHeight = 1000; const char16_t text[] = u"that Russian place we used to go to after fencing"; std::vector lines; EXPECT_EQ(0, ElideRectangleText(text, font_list, kAvailableWidth, kAvailableHeight, WRAP_LONG_WORDS, &lines)); ASSERT_EQ(2u, lines.size()); EXPECT_LE(GetStringWidthF(lines[0], font_list), kAvailableWidth); EXPECT_LE(GetStringWidthF(lines[1], font_list), kAvailableWidth); } #if BUILDFLAG(IS_CHROMEOS) // This test was created specifically to test a message from crbug.com/415213. // It tests that width of concatenation of words equals sum of widths of the // words. TEST(TextEliderTest, ElideRectangleTextCheckConcatWidthEqualsSumOfWidths) { FontList font_list; font_list = FontList("Noto Sans UI,ui-sans, 12px"); SetFontRenderParamsDeviceScaleFactor(1.25f); #define WIDTH(x) GetStringWidthF((x), font_list) EXPECT_EQ(WIDTH(u"The administrator for this account has"), WIDTH(u"The ") + WIDTH(u"administrator ") + WIDTH(u"for ") + WIDTH(u"this ") + WIDTH(u"account ") + WIDTH(u"has")); #undef WIDTH SetFontRenderParamsDeviceScaleFactor(1.0f); } #endif // BUILDFLAG(IS_CHROMEOS) TEST(TextEliderTest, ElideRectangleString) { struct Case { const char16_t* input; int max_rows; int max_cols; bool result; const char16_t* output; }; const auto cases = std::to_array({ {u"", 0, 0, false, u""}, {u"", 1, 1, false, u""}, {u"Hi, my name is\nTom", 0, 0, true, u"..."}, {u"Hi, my name is\nTom", 1, 0, true, u"\n..."}, {u"Hi, my name is\nTom", 0, 1, true, u"..."}, {u"Hi, my name is\nTom", 1, 1, true, u"H\n..."}, {u"Hi, my name is\nTom", 2, 1, true, u"H\ni\n..."}, {u"Hi, my name is\nTom", 3, 1, true, u"H\ni\n,\n..."}, {u"Hi, my name is\nTom", 4, 1, true, u"H\ni\n,\n \n..."}, {u"Hi, my name is\nTom", 5, 1, true, u"H\ni\n,\n \nm\n..."}, {u"Hi, my name is\nTom", 0, 2, true, u"..."}, {u"Hi, my name is\nTom", 1, 2, true, u"Hi\n..."}, {u"Hi, my name is\nTom", 2, 2, true, u"Hi\n, \n..."}, {u"Hi, my name is\nTom", 3, 2, true, u"Hi\n, \nmy\n..."}, {u"Hi, my name is\nTom", 4, 2, true, u"Hi\n, \nmy\n n\n..."}, {u"Hi, my name is\nTom", 5, 2, true, u"Hi\n, \nmy\n n\nam\n..."}, {u"Hi, my name is\nTom", 0, 3, true, u"..."}, {u"Hi, my name is\nTom", 1, 3, true, u"Hi,\n..."}, {u"Hi, my name is\nTom", 2, 3, true, u"Hi,\n my\n..."}, {u"Hi, my name is\nTom", 3, 3, true, u"Hi,\n my\n na\n..."}, {u"Hi, my name is\nTom", 4, 3, true, u"Hi,\n my\n na\nme \n..."}, {u"Hi, my name is\nTom", 5, 3, true, u"Hi,\n my\n na\nme \nis\n..."}, {u"Hi, my name is\nTom", 1, 4, true, u"Hi, \n..."}, {u"Hi, my name is\nTom", 2, 4, true, u"Hi, \nmy n\n..."}, {u"Hi, my name is\nTom", 3, 4, true, u"Hi, \nmy n\name \n..."}, {u"Hi, my name is\nTom", 4, 4, true, u"Hi, \nmy n\name \nis\n..."}, {u"Hi, my name is\nTom", 5, 4, false, u"Hi, \nmy n\name \nis\nTom"}, {u"Hi, my name is\nTom", 1, 5, true, u"Hi, \n..."}, {u"Hi, my name is\nTom", 2, 5, true, u"Hi, \nmy na\n..."}, {u"Hi, my name is\nTom", 3, 5, true, u"Hi, \nmy na\nme \n..."}, {u"Hi, my name is\nTom", 4, 5, true, u"Hi, \nmy na\nme \nis\n..."}, {u"Hi, my name is\nTom", 5, 5, false, u"Hi, \nmy na\nme \nis\nTom"}, {u"Hi, my name is\nTom", 1, 6, true, u"Hi, \n..."}, {u"Hi, my name is\nTom", 2, 6, true, u"Hi, \nmy \n..."}, {u"Hi, my name is\nTom", 3, 6, true, u"Hi, \nmy \nname \n..."}, {u"Hi, my name is\nTom", 4, 6, true, u"Hi, \nmy \nname \nis\n..."}, {u"Hi, my name is\nTom", 5, 6, false, u"Hi, \nmy \nname \nis\nTom"}, {u"Hi, my name is\nTom", 1, 7, true, u"Hi, \n..."}, {u"Hi, my name is\nTom", 2, 7, true, u"Hi, \nmy \n..."}, {u"Hi, my name is\nTom", 3, 7, true, u"Hi, \nmy \nname \n..."}, {u"Hi, my name is\nTom", 4, 7, true, u"Hi, \nmy \nname \nis\n..."}, {u"Hi, my name is\nTom", 5, 7, false, u"Hi, \nmy \nname \nis\nTom"}, {u"Hi, my name is\nTom", 1, 8, true, u"Hi, my \n..."}, {u"Hi, my name is\nTom", 2, 8, true, u"Hi, my \nname \n..."}, {u"Hi, my name is\nTom", 3, 8, true, u"Hi, my \nname \nis\n..."}, {u"Hi, my name is\nTom", 4, 8, false, u"Hi, my \nname \nis\nTom"}, {u"Hi, my name is\nTom", 1, 9, true, u"Hi, my \n..."}, {u"Hi, my name is\nTom", 2, 9, true, u"Hi, my \nname is\n..."}, {u"Hi, my name is\nTom", 3, 9, false, u"Hi, my \nname is\nTom"}, {u"Hi, my name is\nTom", 1, 10, true, u"Hi, my \n..."}, {u"Hi, my name is\nTom", 2, 10, true, u"Hi, my \nname is\n..."}, {u"Hi, my name is\nTom", 3, 10, false, u"Hi, my \nname is\nTom"}, {u"Hi, my name is\nTom", 1, 11, true, u"Hi, my \n..."}, {u"Hi, my name is\nTom", 2, 11, true, u"Hi, my \nname is\n..."}, {u"Hi, my name is\nTom", 3, 11, false, u"Hi, my \nname is\nTom"}, {u"Hi, my name is\nTom", 1, 12, true, u"Hi, my \n..."}, {u"Hi, my name is\nTom", 2, 12, true, u"Hi, my \nname is\n..."}, {u"Hi, my name is\nTom", 3, 12, false, u"Hi, my \nname is\nTom"}, {u"Hi, my name is\nTom", 1, 13, true, u"Hi, my name \n..."}, {u"Hi, my name is\nTom", 2, 13, true, u"Hi, my name \nis\n..."}, {u"Hi, my name is\nTom", 3, 13, false, u"Hi, my name \nis\nTom"}, {u"Hi, my name is\nTom", 1, 20, true, u"Hi, my name is\n..."}, {u"Hi, my name is\nTom", 2, 20, false, u"Hi, my name is\nTom"}, {u"Hi, my name is Tom", 1, 40, false, u"Hi, my name is Tom"}, }); std::u16string output; for (const auto& c : cases) { EXPECT_EQ(c.result, ElideRectangleString(c.input, c.max_rows, c.max_cols, true, &output)); EXPECT_EQ(c.output, output); } } TEST(TextEliderTest, ElideRectangleStringNotStrict) { struct Case { const char16_t* input; int max_rows; int max_cols; bool result; const char16_t* output; }; const auto cases = std::to_array({ {u"", 0, 0, false, u""}, {u"", 1, 1, false, u""}, {u"Hi, my name_is\nDick", 0, 0, true, u"..."}, {u"Hi, my name_is\nDick", 1, 0, true, u"\n..."}, {u"Hi, my name_is\nDick", 0, 1, true, u"..."}, {u"Hi, my name_is\nDick", 1, 1, true, u"H\n..."}, {u"Hi, my name_is\nDick", 2, 1, true, u"H\ni\n..."}, {u"Hi, my name_is\nDick", 3, 1, true, u"H\ni\n,\n..."}, {u"Hi, my name_is\nDick", 4, 1, true, u"H\ni\n,\n \n..."}, {u"Hi, my name_is\nDick", 5, 1, true, u"H\ni\n,\n \nm\n..."}, {u"Hi, my name_is\nDick", 0, 2, true, u"..."}, {u"Hi, my name_is\nDick", 1, 2, true, u"Hi\n..."}, {u"Hi, my name_is\nDick", 2, 2, true, u"Hi\n, \n..."}, {u"Hi, my name_is\nDick", 3, 2, true, u"Hi\n, \nmy\n..."}, {u"Hi, my name_is\nDick", 4, 2, true, u"Hi\n, \nmy\n n\n..."}, {u"Hi, my name_is\nDick", 5, 2, true, u"Hi\n, \nmy\n n\nam\n..."}, {u"Hi, my name_is\nDick", 0, 3, true, u"..."}, {u"Hi, my name_is\nDick", 1, 3, true, u"Hi,\n..."}, {u"Hi, my name_is\nDick", 2, 3, true, u"Hi,\n my\n..."}, {u"Hi, my name_is\nDick", 3, 3, true, u"Hi,\n my\n na\n..."}, {u"Hi, my name_is\nDick", 4, 3, true, u"Hi,\n my\n na\nme_\n..."}, {u"Hi, my name_is\nDick", 5, 3, true, u"Hi,\n my\n na\nme_\nis\n..."}, {u"Hi, my name_is\nDick", 1, 4, true, u"Hi, ..."}, {u"Hi, my name_is\nDick", 2, 4, true, u"Hi, my n\n..."}, {u"Hi, my name_is\nDick", 3, 4, true, u"Hi, my n\name_\n..."}, {u"Hi, my name_is\nDick", 4, 4, true, u"Hi, my n\name_\nis\n..."}, {u"Hi, my name_is\nDick", 5, 4, false, u"Hi, my n\name_\nis\nDick"}, {u"Hi, my name_is\nDick", 1, 5, true, u"Hi, ..."}, {u"Hi, my name_is\nDick", 2, 5, true, u"Hi, my na\n..."}, {u"Hi, my name_is\nDick", 3, 5, true, u"Hi, my na\nme_is\n..."}, {u"Hi, my name_is\nDick", 4, 5, true, u"Hi, my na\nme_is\n\n..."}, {u"Hi, my name_is\nDick", 5, 5, false, u"Hi, my na\nme_is\n\nDick"}, {u"Hi, my name_is\nDick", 1, 6, true, u"Hi, ..."}, {u"Hi, my name_is\nDick", 2, 6, true, u"Hi, my nam\n..."}, {u"Hi, my name_is\nDick", 3, 6, true, u"Hi, my nam\ne_is\n..."}, {u"Hi, my name_is\nDick", 4, 6, false, u"Hi, my nam\ne_is\nDick"}, {u"Hi, my name_is\nDick", 5, 6, false, u"Hi, my nam\ne_is\nDick"}, {u"Hi, my name_is\nDick", 1, 7, true, u"Hi, ..."}, {u"Hi, my name_is\nDick", 2, 7, true, u"Hi, my name\n..."}, {u"Hi, my name_is\nDick", 3, 7, true, u"Hi, my name\n_is\n..."}, {u"Hi, my name_is\nDick", 4, 7, false, u"Hi, my name\n_is\nDick"}, {u"Hi, my name_is\nDick", 5, 7, false, u"Hi, my name\n_is\nDick"}, {u"Hi, my name_is\nDick", 1, 8, true, u"Hi, my n\n..."}, {u"Hi, my name_is\nDick", 2, 8, true, u"Hi, my n\name_is\n..."}, {u"Hi, my name_is\nDick", 3, 8, false, u"Hi, my n\name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 9, true, u"Hi, my ..."}, {u"Hi, my name_is\nDick", 2, 9, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 3, 9, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 10, true, u"Hi, my ..."}, {u"Hi, my name_is\nDick", 2, 10, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 3, 10, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 11, true, u"Hi, my ..."}, {u"Hi, my name_is\nDick", 2, 11, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 3, 11, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 12, true, u"Hi, my ..."}, {u"Hi, my name_is\nDick", 2, 12, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 3, 12, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 13, true, u"Hi, my ..."}, {u"Hi, my name_is\nDick", 2, 13, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 3, 13, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is\nDick", 1, 20, true, u"Hi, my name_is\n..."}, {u"Hi, my name_is\nDick", 2, 20, false, u"Hi, my name_is\nDick"}, {u"Hi, my name_is Dick", 1, 40, false, u"Hi, my name_is Dick"}, }); std::u16string output; for (const auto& c : cases) { EXPECT_EQ(c.result, ElideRectangleString(c.input, c.max_rows, c.max_cols, false, &output)); EXPECT_EQ(c.output, output); } } TEST(TextEliderTest, ElideRectangleWide16) { // Two greek words separated by space. const std::u16string str(u"Παγκόσμιος Ιστός"); const std::u16string out1(u"Παγκ\nόσμι\n..."); const std::u16string out2(u"Παγκόσμιος \nΙστός"); std::u16string output; EXPECT_TRUE(ElideRectangleString(str, 2, 4, true, &output)); EXPECT_EQ(out1, output); EXPECT_FALSE(ElideRectangleString(str, 2, 12, true, &output)); EXPECT_EQ(out2, output); } TEST(TextEliderTest, ElideRectangleWide32) { const std::u16string str(u"𝒜𝒜𝒜𝒜 aaaaa"); const std::u16string out(u"𝒜𝒜𝒜\n𝒜 \naaa\n..."); std::u16string output; EXPECT_TRUE(ElideRectangleString(str, 3, 3, true, &output)); EXPECT_EQ(out, output); } TEST(TextEliderTest, TruncateString) { std::u16string str = u"fooooey bxxxar baz "; // Test breaking at character 0. EXPECT_EQ(std::u16string(), TruncateString(str, 0, WORD_BREAK)); EXPECT_EQ(std::u16string(), TruncateString(str, 0, CHARACTER_BREAK)); // Test breaking at character 1. EXPECT_EQ(u"…", TruncateString(str, 1, WORD_BREAK)); EXPECT_EQ(u"…", TruncateString(str, 1, CHARACTER_BREAK)); // Test breaking in the middle of the first word. EXPECT_EQ(u"f…", TruncateString(str, 2, WORD_BREAK)); EXPECT_EQ(u"f…", TruncateString(str, 2, CHARACTER_BREAK)); // Test breaking in between words. EXPECT_EQ(u"fooooey…", TruncateString(str, 9, WORD_BREAK)); EXPECT_EQ(u"fooooey…", TruncateString(str, 9, CHARACTER_BREAK)); // Test breaking at the start of a later word. EXPECT_EQ(u"fooooey…", TruncateString(str, 11, WORD_BREAK)); EXPECT_EQ(u"fooooey…", TruncateString(str, 11, CHARACTER_BREAK)); // Test breaking in the middle of a word. EXPECT_EQ(u"fooooey…", TruncateString(str, 12, WORD_BREAK)); EXPECT_EQ(u"fooooey…", TruncateString(str, 12, CHARACTER_BREAK)); EXPECT_EQ(u"fooooey…", TruncateString(str, 14, WORD_BREAK)); EXPECT_EQ(u"fooooey bx…", TruncateString(str, 14, CHARACTER_BREAK)); // Test breaking in whitespace at the end of the string. EXPECT_EQ(u"fooooey bxxxar baz…", TruncateString(str, 22, WORD_BREAK)); EXPECT_EQ(u"fooooey bxxxar baz…", TruncateString(str, 22, CHARACTER_BREAK)); // Test breaking at the end of the string. EXPECT_EQ(str, TruncateString(str, str.length(), WORD_BREAK)); EXPECT_EQ(str, TruncateString(str, str.length(), CHARACTER_BREAK)); // Test breaking past the end of the string. EXPECT_EQ(str, TruncateString(str, str.length() + 10, WORD_BREAK)); EXPECT_EQ(str, TruncateString(str, str.length() + 10, CHARACTER_BREAK)); // Tests of strings with leading whitespace: std::u16string str2 = u" foo"; // Test breaking in leading whitespace. EXPECT_EQ(u"…", TruncateString(str2, 2, WORD_BREAK)); EXPECT_EQ(u"…", TruncateString(str2, 2, CHARACTER_BREAK)); // Test breaking at the beginning of the first word, with leading whitespace. EXPECT_EQ(u"…", TruncateString(str2, 3, WORD_BREAK)); EXPECT_EQ(u"…", TruncateString(str2, 3, CHARACTER_BREAK)); // Test breaking in the middle of the first word, with leading whitespace. EXPECT_EQ(u"…", TruncateString(str2, 4, WORD_BREAK)); EXPECT_EQ(u"…", TruncateString(str2, 4, CHARACTER_BREAK)); EXPECT_EQ(u" f…", TruncateString(str2, 5, WORD_BREAK)); EXPECT_EQ(u" f…", TruncateString(str2, 5, CHARACTER_BREAK)); } } // namespace gfx