1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 // 5 // Unit tests for eliding and formatting utility functions. 6 7 #include "ui/gfx/text_elider.h" 8 9 #include "base/files/file_path.h" 10 #include "base/i18n/rtl.h" 11 #include "base/memory/scoped_ptr.h" 12 #include "base/strings/string_util.h" 13 #include "base/strings/utf_string_conversions.h" 14 #include "testing/gtest/include/gtest/gtest.h" 15 #include "ui/gfx/font.h" 16 #include "ui/gfx/font_list.h" 17 #include "ui/gfx/text_utils.h" 18 19 using base::ASCIIToUTF16; 20 using base::UTF16ToUTF8; 21 using base::UTF16ToWide; 22 using base::UTF8ToUTF16; 23 using base::WideToUTF16; 24 25 namespace gfx { 26 27 namespace { 28 29 struct Testcase { 30 const std::string input; 31 const std::string output; 32 }; 33 34 struct FileTestcase { 35 const base::FilePath::StringType input; 36 const std::string output; 37 }; 38 39 struct UTF16Testcase { 40 const base::string16 input; 41 const base::string16 output; 42 }; 43 44 struct TestData { 45 const std::string a; 46 const std::string b; 47 const int compare_result; 48 }; 49 50 } // namespace 51 52 // TODO(ios): This test fails on iOS because iOS version of GetStringWidthF 53 // that calls [NSString sizeWithFont] returns the rounded string width. 54 // TODO(338784): Enable this on android. 55 #if defined(OS_IOS) || defined(OS_ANDROID) 56 #define MAYBE_ElideEmail DISABLED_ElideEmail 57 #else 58 #define MAYBE_ElideEmail ElideEmail 59 #endif 60 TEST(TextEliderTest, MAYBE_ElideEmail) { 61 const std::string kEllipsisStr(kEllipsis); 62 63 // Test emails and their expected elided forms (from which the available 64 // widths will be derived). 65 // For elided forms in which both the username and domain must be elided: 66 // the result (how many characters are left on each side) can be font 67 // dependent. To avoid this, the username is prefixed with the characters 68 // expected to remain in the domain. 69 Testcase testcases[] = { 70 {"g (at) g.c", "g (at) g.c"}, 71 {"g (at) g.c", kEllipsisStr}, 72 {"ga (at) co.ca", "ga@c" + kEllipsisStr + "a"}, 73 {"short (at) small.com", "s" + kEllipsisStr + "@s" + kEllipsisStr}, 74 {"short (at) small.com", "s" + kEllipsisStr + "@small.com"}, 75 {"short (at) longbutlotsofspace.com", "short (at) longbutlotsofspace.com"}, 76 {"short (at) longbutnotverymuchspace.com", 77 "short@long" + kEllipsisStr + ".com"}, 78 {"la_short (at) longbutverytightspace.ca", 79 "la" + kEllipsisStr + "@l" + kEllipsisStr + "a"}, 80 {"longusername (at) gmail.com", "long" + kEllipsisStr + "@gmail.com"}, 81 {"elidetothemax (at) justfits.com", "e" + kEllipsisStr + "@justfits.com"}, 82 {"thatom_somelongemail (at) thatdoesntfit.com", 83 "thatom" + kEllipsisStr + "@tha" + kEllipsisStr + "om"}, 84 {"namefits (at) butthedomaindoesnt.com", 85 "namefits@butthedo" + kEllipsisStr + "snt.com"}, 86 {"widthtootight (at) nospace.com", kEllipsisStr}, 87 {"nospaceforusername@l", kEllipsisStr}, 88 {"little (at) littlespace.com", "l" + kEllipsisStr + "@l" + kEllipsisStr}, 89 {"l (at) llllllllllllllllllllllll.com", "l@lllll" + kEllipsisStr + ".com"}, 90 {"messed\"up@whyanat\"++@notgoogley.com", 91 "messed\"up@whyanat\"++@notgoogley.com"}, 92 {"messed\"up@whyanat\"++@notgoogley.com", 93 "messed\"up@why" + kEllipsisStr + "@notgoogley.com"}, 94 {"noca_messed\"up@whyanat\"++@notgoogley.ca", 95 "noca" + kEllipsisStr + "@no" + kEllipsisStr + "ca"}, 96 {"at\"@@@@@@@@@...@@.@.@.@@@\"@madness.com", 97 "at\"@@@@@@@@@...@@.@." + kEllipsisStr + "@madness.com"}, 98 // Special case: "m..." takes more than half of the available width; thus 99 // the domain must elide to "l..." and not "l...l" as it must allow enough 100 // space for the minimal username elision although its half of the 101 // available width would normally allow it to elide to "l...l". 102 {"mmmmm@llllllllll", "m" + kEllipsisStr + "@l" + kEllipsisStr}, 103 }; 104 105 const FontList font_list; 106 for (size_t i = 0; i < arraysize(testcases); ++i) { 107 const base::string16 expected_output = UTF8ToUTF16(testcases[i].output); 108 EXPECT_EQ(expected_output, 109 ElideText(UTF8ToUTF16(testcases[i].input), font_list, 110 GetStringWidthF(expected_output, font_list), 111 ELIDE_EMAIL)); 112 } 113 } 114 115 // TODO(338784): Enable this on android. 116 #if defined(OS_ANDROID) 117 #define MAYBE_ElideEmailMoreSpace DISABLED_ElideEmailMoreSpace 118 #else 119 #define MAYBE_ElideEmailMoreSpace ElideEmailMoreSpace 120 #endif 121 TEST(TextEliderTest, MAYBE_ElideEmailMoreSpace) { 122 const int test_width_factors[] = { 123 100, 124 10000, 125 1000000, 126 }; 127 const std::string test_emails[] = { 128 "a@c", 129 "test (at) email.com", 130 "short (at) verysuperdupperlongdomain.com", 131 "supermegalongusername (at) withasuperlonnnggggdomain.gouv.qc.ca", 132 }; 133 134 const FontList font_list; 135 for (size_t i = 0; i < arraysize(test_width_factors); ++i) { 136 const int test_width = 137 font_list.GetExpectedTextWidth(test_width_factors[i]); 138 for (size_t j = 0; j < arraysize(test_emails); ++j) { 139 // Extra space is available: the email should not be elided. 140 const base::string16 test_email = UTF8ToUTF16(test_emails[j]); 141 EXPECT_EQ(test_email, 142 ElideText(test_email, font_list, test_width, ELIDE_EMAIL)); 143 } 144 } 145 } 146 147 // TODO(ios): This test fails on iOS because iOS version of GetStringWidthF 148 // that calls [NSString sizeWithFont] returns the rounded string width. 149 // TODO(338784): Enable this on android. 150 #if defined(OS_IOS) || defined(OS_ANDROID) 151 #define MAYBE_TestFilenameEliding DISABLED_TestFilenameEliding 152 #else 153 #define MAYBE_TestFilenameEliding TestFilenameEliding 154 #endif 155 TEST(TextEliderTest, MAYBE_TestFilenameEliding) { 156 const std::string kEllipsisStr(kEllipsis); 157 const base::FilePath::StringType kPathSeparator = 158 base::FilePath::StringType().append(1, base::FilePath::kSeparators[0]); 159 160 FileTestcase testcases[] = { 161 {FILE_PATH_LITERAL(""), ""}, 162 {FILE_PATH_LITERAL("."), "."}, 163 {FILE_PATH_LITERAL("filename.exe"), "filename.exe"}, 164 {FILE_PATH_LITERAL(".longext"), ".longext"}, 165 {FILE_PATH_LITERAL("pie"), "pie"}, 166 {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") + 167 kPathSeparator + FILE_PATH_LITERAL("filename.pie"), 168 "filename.pie"}, 169 {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") + 170 kPathSeparator + FILE_PATH_LITERAL("longfilename.pie"), 171 "long" + kEllipsisStr + ".pie"}, 172 {FILE_PATH_LITERAL("http://path.com/filename.pie"), "filename.pie"}, 173 {FILE_PATH_LITERAL("http://path.com/longfilename.pie"), 174 "long" + kEllipsisStr + ".pie"}, 175 {FILE_PATH_LITERAL("piesmashingtacularpants"), "pie" + kEllipsisStr}, 176 {FILE_PATH_LITERAL(".piesmashingtacularpants"), ".pie" + kEllipsisStr}, 177 {FILE_PATH_LITERAL("cheese."), "cheese."}, 178 {FILE_PATH_LITERAL("file name.longext"), 179 "file" + kEllipsisStr + ".longext"}, 180 {FILE_PATH_LITERAL("fil ename.longext"), 181 "fil " + kEllipsisStr + ".longext"}, 182 {FILE_PATH_LITERAL("filename.longext"), 183 "file" + kEllipsisStr + ".longext"}, 184 {FILE_PATH_LITERAL("filename.middleext.longext"), 185 "filename.mid" + kEllipsisStr + ".longext"}, 186 {FILE_PATH_LITERAL("filename.superduperextremelylongext"), 187 "filename.sup" + kEllipsisStr + "emelylongext"}, 188 {FILE_PATH_LITERAL("filenamereallylongtext.superduperextremelylongext"), 189 "filenamereall" + kEllipsisStr + "emelylongext"}, 190 {FILE_PATH_LITERAL("file.name.really.long.text.superduperextremelylongext"), 191 "file.name.re" + kEllipsisStr + "emelylongext"} 192 }; 193 194 static const FontList font_list; 195 for (size_t i = 0; i < arraysize(testcases); ++i) { 196 base::FilePath filepath(testcases[i].input); 197 base::string16 expected = UTF8ToUTF16(testcases[i].output); 198 expected = base::i18n::GetDisplayStringInLTRDirectionality(expected); 199 EXPECT_EQ(expected, ElideFilename(filepath, font_list, 200 GetStringWidthF(UTF8ToUTF16(testcases[i].output), font_list))); 201 } 202 } 203 204 // TODO(338784): Enable this on android. 205 #if defined(OS_ANDROID) 206 #define MAYBE_ElideTextTruncate DISABLED_ElideTextTruncate 207 #else 208 #define MAYBE_ElideTextTruncate ElideTextTruncate 209 #endif 210 TEST(TextEliderTest, MAYBE_ElideTextTruncate) { 211 const FontList font_list; 212 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 213 struct TestData { 214 const char* input; 215 float width; 216 const char* output; 217 } cases[] = { 218 { "", 0, "" }, 219 { "Test", 0, "" }, 220 { "", kTestWidth, "" }, 221 { "Tes", kTestWidth, "Tes" }, 222 { "Test", kTestWidth, "Test" }, 223 { "Tests", kTestWidth, "Test" }, 224 }; 225 226 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 227 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list, 228 cases[i].width, TRUNCATE); 229 EXPECT_EQ(cases[i].output, UTF16ToUTF8(result)); 230 } 231 } 232 233 // TODO(338784): Enable this on android. 234 #if defined(OS_ANDROID) 235 #define MAYBE_ElideTextEllipsis DISABLED_ElideTextEllipsis 236 #else 237 #define MAYBE_ElideTextEllipsis ElideTextEllipsis 238 #endif 239 TEST(TextEliderTest, MAYBE_ElideTextEllipsis) { 240 const FontList font_list; 241 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 242 const char* kEllipsis = "\xE2\x80\xA6"; 243 const float kEllipsisWidth = 244 GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list); 245 struct TestData { 246 const char* input; 247 float width; 248 const char* output; 249 } cases[] = { 250 { "", 0, "" }, 251 { "Test", 0, "" }, 252 { "Test", kEllipsisWidth, kEllipsis }, 253 { "", kTestWidth, "" }, 254 { "Tes", kTestWidth, "Tes" }, 255 { "Test", kTestWidth, "Test" }, 256 }; 257 258 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 259 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list, 260 cases[i].width, ELIDE_TAIL); 261 EXPECT_EQ(cases[i].output, UTF16ToUTF8(result)); 262 } 263 } 264 265 // TODO(338784): Enable this on android. 266 #if defined(OS_ANDROID) 267 #define MAYBE_ElideTextEllipsisFront DISABLED_ElideTextEllipsisFront 268 #else 269 #define MAYBE_ElideTextEllipsisFront ElideTextEllipsisFront 270 #endif 271 TEST(TextEliderTest, MAYBE_ElideTextEllipsisFront) { 272 const FontList font_list; 273 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 274 const std::string kEllipsisStr(kEllipsis); 275 const float kEllipsisWidth = 276 GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list); 277 const float kEllipsis23Width = 278 GetStringWidthF(UTF8ToUTF16(kEllipsisStr + "23"), font_list); 279 struct TestData { 280 const char* input; 281 float width; 282 const base::string16 output; 283 } cases[] = { 284 { "", 0, base::string16() }, 285 { "Test", 0, base::string16() }, 286 { "Test", kEllipsisWidth, UTF8ToUTF16(kEllipsisStr) }, 287 { "", kTestWidth, base::string16() }, 288 { "Tes", kTestWidth, ASCIIToUTF16("Tes") }, 289 { "Test", kTestWidth, ASCIIToUTF16("Test") }, 290 { "Test123", kEllipsis23Width, UTF8ToUTF16(kEllipsisStr + "23") }, 291 }; 292 293 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 294 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list, 295 cases[i].width, ELIDE_HEAD); 296 EXPECT_EQ(cases[i].output, result); 297 } 298 } 299 300 // Checks that all occurrences of |first_char| are followed by |second_char| and 301 // all occurrences of |second_char| are preceded by |first_char| in |text|. 302 static void CheckSurrogatePairs(const base::string16& text, 303 base::char16 first_char, 304 base::char16 second_char) { 305 for (size_t index = 0; index < text.length(); ++index) { 306 EXPECT_NE(second_char, text[index]); 307 if (text[index] == first_char) { 308 ASSERT_LT(++index, text.length()); 309 EXPECT_EQ(second_char, text[index]); 310 } 311 } 312 } 313 314 // TODO(338784): Enable this on android. 315 #if defined(OS_ANDROID) 316 #define MAYBE_ElideTextSurrogatePairs DISABLED_ElideTextSurrogatePairs 317 #else 318 #define MAYBE_ElideTextSurrogatePairs ElideTextSurrogatePairs 319 #endif 320 TEST(TextEliderTest, MAYBE_ElideTextSurrogatePairs) { 321 const FontList font_list; 322 // The below is 'MUSICAL SYMBOL G CLEF', which is represented in UTF-16 as 323 // two characters forming a surrogate pair 0x0001D11E. 324 const std::string kSurrogate = "\xF0\x9D\x84\x9E"; 325 const base::string16 kTestString = UTF8ToUTF16(kSurrogate + "x" + kSurrogate); 326 const float kTestStringWidth = GetStringWidthF(kTestString, font_list); 327 const base::char16 kSurrogateFirstChar = kTestString[0]; 328 const base::char16 kSurrogateSecondChar = kTestString[1]; 329 base::string16 result; 330 331 // Elide |kTextString| to all possible widths and check that no instance of 332 // |kSurrogate| was split in two. 333 for (float width = 0; width <= kTestStringWidth; width++) { 334 result = ElideText(kTestString, font_list, width, TRUNCATE); 335 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar); 336 337 result = ElideText(kTestString, font_list, width, ELIDE_TAIL); 338 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar); 339 340 result = ElideText(kTestString, font_list, width, ELIDE_MIDDLE); 341 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar); 342 343 result = ElideText(kTestString, font_list, width, ELIDE_HEAD); 344 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar); 345 } 346 } 347 348 // TODO(338784): Enable this on android. 349 #if defined(OS_ANDROID) 350 #define MAYBE_ElideTextLongStrings DISABLED_ElideTextLongStrings 351 #else 352 #define MAYBE_ElideTextLongStrings ElideTextLongStrings 353 #endif 354 TEST(TextEliderTest, MAYBE_ElideTextLongStrings) { 355 const base::string16 kEllipsisStr = UTF8ToUTF16(kEllipsis); 356 base::string16 data_scheme(UTF8ToUTF16("data:text/plain,")); 357 size_t data_scheme_length = data_scheme.length(); 358 359 base::string16 ten_a(10, 'a'); 360 base::string16 hundred_a(100, 'a'); 361 base::string16 thousand_a(1000, 'a'); 362 base::string16 ten_thousand_a(10000, 'a'); 363 base::string16 hundred_thousand_a(100000, 'a'); 364 base::string16 million_a(1000000, 'a'); 365 366 // TODO(gbillock): Improve these tests by adding more string diversity and 367 // doing string compares instead of length compares. See bug 338836. 368 369 size_t number_of_as = 156; 370 base::string16 long_string_end( 371 data_scheme + base::string16(number_of_as, 'a') + kEllipsisStr); 372 UTF16Testcase testcases_end[] = { 373 { data_scheme + ten_a, data_scheme + ten_a }, 374 { data_scheme + hundred_a, data_scheme + hundred_a }, 375 { data_scheme + thousand_a, long_string_end }, 376 { data_scheme + ten_thousand_a, long_string_end }, 377 { data_scheme + hundred_thousand_a, long_string_end }, 378 { data_scheme + million_a, long_string_end }, 379 }; 380 381 const FontList font_list; 382 float ellipsis_width = GetStringWidthF(kEllipsisStr, font_list); 383 for (size_t i = 0; i < arraysize(testcases_end); ++i) { 384 // Compare sizes rather than actual contents because if the test fails, 385 // output is rather long. 386 EXPECT_EQ(testcases_end[i].output.size(), 387 ElideText(testcases_end[i].input, font_list, 388 GetStringWidthF(testcases_end[i].output, font_list), 389 ELIDE_TAIL).size()); 390 EXPECT_EQ(kEllipsisStr, 391 ElideText(testcases_end[i].input, font_list, ellipsis_width, 392 ELIDE_TAIL)); 393 } 394 395 size_t number_of_trailing_as = (data_scheme_length + number_of_as) / 2; 396 base::string16 long_string_middle(data_scheme + 397 base::string16(number_of_as - number_of_trailing_as, 'a') + kEllipsisStr + 398 base::string16(number_of_trailing_as, 'a')); 399 UTF16Testcase testcases_middle[] = { 400 { data_scheme + ten_a, data_scheme + ten_a }, 401 { data_scheme + hundred_a, data_scheme + hundred_a }, 402 { data_scheme + thousand_a, long_string_middle }, 403 { data_scheme + ten_thousand_a, long_string_middle }, 404 { data_scheme + hundred_thousand_a, long_string_middle }, 405 { data_scheme + million_a, long_string_middle }, 406 }; 407 408 for (size_t i = 0; i < arraysize(testcases_middle); ++i) { 409 // Compare sizes rather than actual contents because if the test fails, 410 // output is rather long. 411 EXPECT_EQ(testcases_middle[i].output.size(), 412 ElideText(testcases_middle[i].input, font_list, 413 GetStringWidthF(testcases_middle[i].output, font_list), 414 ELIDE_MIDDLE).size()); 415 EXPECT_EQ(kEllipsisStr, 416 ElideText(testcases_middle[i].input, font_list, ellipsis_width, 417 ELIDE_MIDDLE)); 418 } 419 420 base::string16 long_string_beginning( 421 kEllipsisStr + base::string16(number_of_as, 'a')); 422 UTF16Testcase testcases_beginning[] = { 423 { data_scheme + ten_a, data_scheme + ten_a }, 424 { data_scheme + hundred_a, data_scheme + hundred_a }, 425 { data_scheme + thousand_a, long_string_beginning }, 426 { data_scheme + ten_thousand_a, long_string_beginning }, 427 { data_scheme + hundred_thousand_a, long_string_beginning }, 428 { data_scheme + million_a, long_string_beginning }, 429 }; 430 for (size_t i = 0; i < arraysize(testcases_beginning); ++i) { 431 EXPECT_EQ(testcases_beginning[i].output.size(), 432 ElideText( 433 testcases_beginning[i].input, font_list, 434 GetStringWidthF(testcases_beginning[i].output, font_list), 435 ELIDE_HEAD).size()); 436 EXPECT_EQ(kEllipsisStr, 437 ElideText(testcases_beginning[i].input, font_list, ellipsis_width, 438 ELIDE_HEAD)); 439 } 440 } 441 442 TEST(TextEliderTest, ElideString) { 443 struct TestData { 444 const char* input; 445 int max_len; 446 bool result; 447 const char* output; 448 } cases[] = { 449 { "Hello", 0, true, "" }, 450 { "", 0, false, "" }, 451 { "Hello, my name is Tom", 1, true, "H" }, 452 { "Hello, my name is Tom", 2, true, "He" }, 453 { "Hello, my name is Tom", 3, true, "H.m" }, 454 { "Hello, my name is Tom", 4, true, "H..m" }, 455 { "Hello, my name is Tom", 5, true, "H...m" }, 456 { "Hello, my name is Tom", 6, true, "He...m" }, 457 { "Hello, my name is Tom", 7, true, "He...om" }, 458 { "Hello, my name is Tom", 10, true, "Hell...Tom" }, 459 { "Hello, my name is Tom", 100, false, "Hello, my name is Tom" } 460 }; 461 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 462 base::string16 output; 463 EXPECT_EQ(cases[i].result, 464 ElideString(UTF8ToUTF16(cases[i].input), 465 cases[i].max_len, &output)); 466 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output)); 467 } 468 } 469 470 // TODO(338784): Enable this on android. 471 #if defined(OS_ANDROID) 472 #define MAYBE_ElideRectangleText DISABLED_ElideRectangleText 473 #else 474 #define MAYBE_ElideRectangleText ElideRectangleText 475 #endif 476 TEST(TextEliderTest, MAYBE_ElideRectangleText) { 477 const FontList font_list; 478 const int line_height = font_list.GetHeight(); 479 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 480 481 struct TestData { 482 const char* input; 483 float available_pixel_width; 484 int available_pixel_height; 485 bool truncated_y; 486 const char* output; 487 } cases[] = { 488 { "", 0, 0, false, NULL }, 489 { "", 1, 1, false, NULL }, 490 { "Test", test_width, 0, true, NULL }, 491 { "Test", test_width, 1, false, "Test" }, 492 { "Test", test_width, line_height, false, "Test" }, 493 { "Test Test", test_width, line_height, true, "Test" }, 494 { "Test Test", test_width, line_height + 1, false, "Test|Test" }, 495 { "Test Test", test_width, line_height * 2, false, "Test|Test" }, 496 { "Test Test", test_width, line_height * 3, false, "Test|Test" }, 497 { "Test Test", test_width * 2, line_height * 2, false, "Test|Test" }, 498 { "Test Test", test_width * 3, line_height, false, "Test Test" }, 499 { "Test\nTest", test_width * 3, line_height * 2, false, "Test|Test" }, 500 { "Te\nst Te", test_width, line_height * 3, false, "Te|st|Te" }, 501 { "\nTest", test_width, line_height * 2, false, "|Test" }, 502 { "\nTest", test_width, line_height, true, "" }, 503 { "\n\nTest", test_width, line_height * 3, false, "||Test" }, 504 { "\n\nTest", test_width, line_height * 2, true, "|" }, 505 { "Test\n", 2 * test_width, line_height * 5, false, "Test|" }, 506 { "Test\n\n", 2 * test_width, line_height * 5, false, "Test||" }, 507 { "Test\n\n\n", 2 * test_width, line_height * 5, false, "Test|||" }, 508 { "Test\nTest\n\n", 2 * test_width, line_height * 5, false, "Test|Test||" }, 509 { "Test\n\nTest\n", 2 * test_width, line_height * 5, false, "Test||Test|" }, 510 { "Test\n\n\nTest", 2 * test_width, line_height * 5, false, "Test|||Test" }, 511 { "Te ", test_width, line_height, false, "Te" }, 512 { "Te Te Test", test_width, 3 * line_height, false, "Te|Te|Test" }, 513 }; 514 515 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 516 std::vector<base::string16> lines; 517 EXPECT_EQ(cases[i].truncated_y ? INSUFFICIENT_SPACE_VERTICAL : 0, 518 ElideRectangleText(UTF8ToUTF16(cases[i].input), 519 font_list, 520 cases[i].available_pixel_width, 521 cases[i].available_pixel_height, 522 TRUNCATE_LONG_WORDS, 523 &lines)); 524 if (cases[i].output) { 525 const std::string result = UTF16ToUTF8(JoinString(lines, '|')); 526 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!"; 527 } else { 528 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!"; 529 } 530 } 531 } 532 533 // TODO(338784): Enable this on android. 534 #if defined(OS_ANDROID) 535 #define MAYBE_ElideRectangleTextPunctuation \ 536 DISABLED_ElideRectangleTextPunctuation 537 #else 538 #define MAYBE_ElideRectangleTextPunctuation ElideRectangleTextPunctuation 539 #endif 540 TEST(TextEliderTest, MAYBE_ElideRectangleTextPunctuation) { 541 const FontList font_list; 542 const int line_height = font_list.GetHeight(); 543 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 544 const float test_t_width = GetStringWidthF(ASCIIToUTF16("Test T"), font_list); 545 546 struct TestData { 547 const char* input; 548 float available_pixel_width; 549 int available_pixel_height; 550 bool wrap_words; 551 bool truncated_x; 552 const char* output; 553 } cases[] = { 554 { "Test T.", test_t_width, line_height * 2, false, false, "Test|T." }, 555 { "Test T ?", test_t_width, line_height * 2, false, false, "Test|T ?" }, 556 { "Test. Test", test_width, line_height * 3, false, true, "Test|Test" }, 557 { "Test. Test", test_width, line_height * 3, true, false, "Test|.|Test" }, 558 }; 559 560 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 561 std::vector<base::string16> lines; 562 const WordWrapBehavior wrap_behavior = 563 (cases[i].wrap_words ? WRAP_LONG_WORDS : TRUNCATE_LONG_WORDS); 564 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0, 565 ElideRectangleText(UTF8ToUTF16(cases[i].input), 566 font_list, 567 cases[i].available_pixel_width, 568 cases[i].available_pixel_height, 569 wrap_behavior, 570 &lines)); 571 if (cases[i].output) { 572 const std::string result = UTF16ToUTF8(JoinString(lines, '|')); 573 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!"; 574 } else { 575 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!"; 576 } 577 } 578 } 579 580 // TODO(338784): Enable this on android. 581 #if defined(OS_ANDROID) 582 #define MAYBE_ElideRectangleTextLongWords DISABLED_ElideRectangleTextLongWords 583 #else 584 #define MAYBE_ElideRectangleTextLongWords ElideRectangleTextLongWords 585 #endif 586 TEST(TextEliderTest, MAYBE_ElideRectangleTextLongWords) { 587 const FontList font_list; 588 const int kAvailableHeight = 1000; 589 const base::string16 kElidedTesting = 590 UTF8ToUTF16(std::string("Tes") + kEllipsis); 591 const float elided_width = GetStringWidthF(kElidedTesting, font_list); 592 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list); 593 594 struct TestData { 595 const char* input; 596 float available_pixel_width; 597 WordWrapBehavior wrap_behavior; 598 bool truncated_x; 599 const char* output; 600 } cases[] = { 601 { "Testing", test_width, IGNORE_LONG_WORDS, false, "Testing" }, 602 { "X Testing", test_width, IGNORE_LONG_WORDS, false, "X|Testing" }, 603 { "Test Testing", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" }, 604 { "Test\nTesting", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" }, 605 { "Test Tests ", test_width, IGNORE_LONG_WORDS, false, "Test|Tests" }, 606 { "Test Tests T", test_width, IGNORE_LONG_WORDS, false, "Test|Tests|T" }, 607 608 { "Testing", elided_width, ELIDE_LONG_WORDS, true, "Tes..." }, 609 { "X Testing", elided_width, ELIDE_LONG_WORDS, true, "X|Tes..." }, 610 { "Test Testing", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." }, 611 { "Test\nTesting", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." }, 612 613 { "Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test" }, 614 { "X Testing", test_width, TRUNCATE_LONG_WORDS, true, "X|Test" }, 615 { "Test Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" }, 616 { "Test\nTesting", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" }, 617 { "Test Tests ", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" }, 618 { "Test Tests T", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test|T" }, 619 620 { "Testing", test_width, WRAP_LONG_WORDS, false, "Test|ing" }, 621 { "X Testing", test_width, WRAP_LONG_WORDS, false, "X|Test|ing" }, 622 { "Test Testing", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" }, 623 { "Test\nTesting", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" }, 624 { "Test Tests ", test_width, WRAP_LONG_WORDS, false, "Test|Test|s" }, 625 { "Test Tests T", test_width, WRAP_LONG_WORDS, false, "Test|Test|s T" }, 626 { "TestTestTest", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test" }, 627 { "TestTestTestT", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test|T" }, 628 }; 629 630 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 631 std::vector<base::string16> lines; 632 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0, 633 ElideRectangleText(UTF8ToUTF16(cases[i].input), 634 font_list, 635 cases[i].available_pixel_width, 636 kAvailableHeight, 637 cases[i].wrap_behavior, 638 &lines)); 639 std::string expected_output(cases[i].output); 640 ReplaceSubstringsAfterOffset(&expected_output, 0, "...", kEllipsis); 641 const std::string result = UTF16ToUTF8(JoinString(lines, '|')); 642 EXPECT_EQ(expected_output, result) << "Case " << i << " failed!"; 643 } 644 } 645 646 // This test is to make sure that the width of each wrapped line does not 647 // exceed the available width. On some platform like Mac, this test used to 648 // fail because the truncated integer width is returned for the string 649 // and the accumulation of the truncated values causes the elide function 650 // to wrap incorrectly. 651 // TODO(338784): Enable this on android. 652 #if defined(OS_ANDROID) 653 #define MAYBE_ElideRectangleTextCheckLineWidth \ 654 DISABLED_ElideRectangleTextCheckLineWidth 655 #else 656 #define MAYBE_ElideRectangleTextCheckLineWidth ElideRectangleTextCheckLineWidth 657 #endif 658 TEST(TextEliderTest, MAYBE_ElideRectangleTextCheckLineWidth) { 659 FontList font_list; 660 #if defined(OS_MACOSX) && !defined(OS_IOS) 661 // Use a specific font to expose the line width exceeding problem. 662 font_list = FontList(Font("LucidaGrande", 12)); 663 #endif 664 const float kAvailableWidth = 235; 665 const int kAvailableHeight = 1000; 666 const char text[] = "that Russian place we used to go to after fencing"; 667 std::vector<base::string16> lines; 668 EXPECT_EQ(0, ElideRectangleText(UTF8ToUTF16(text), 669 font_list, 670 kAvailableWidth, 671 kAvailableHeight, 672 WRAP_LONG_WORDS, 673 &lines)); 674 ASSERT_EQ(2u, lines.size()); 675 EXPECT_LE(GetStringWidthF(lines[0], font_list), kAvailableWidth); 676 EXPECT_LE(GetStringWidthF(lines[1], font_list), kAvailableWidth); 677 } 678 679 TEST(TextEliderTest, ElideRectangleString) { 680 struct TestData { 681 const char* input; 682 int max_rows; 683 int max_cols; 684 bool result; 685 const char* output; 686 } cases[] = { 687 { "", 0, 0, false, "" }, 688 { "", 1, 1, false, "" }, 689 { "Hi, my name is\nTom", 0, 0, true, "..." }, 690 { "Hi, my name is\nTom", 1, 0, true, "\n..." }, 691 { "Hi, my name is\nTom", 0, 1, true, "..." }, 692 { "Hi, my name is\nTom", 1, 1, true, "H\n..." }, 693 { "Hi, my name is\nTom", 2, 1, true, "H\ni\n..." }, 694 { "Hi, my name is\nTom", 3, 1, true, "H\ni\n,\n..." }, 695 { "Hi, my name is\nTom", 4, 1, true, "H\ni\n,\n \n..." }, 696 { "Hi, my name is\nTom", 5, 1, true, "H\ni\n,\n \nm\n..." }, 697 { "Hi, my name is\nTom", 0, 2, true, "..." }, 698 { "Hi, my name is\nTom", 1, 2, true, "Hi\n..." }, 699 { "Hi, my name is\nTom", 2, 2, true, "Hi\n, \n..." }, 700 { "Hi, my name is\nTom", 3, 2, true, "Hi\n, \nmy\n..." }, 701 { "Hi, my name is\nTom", 4, 2, true, "Hi\n, \nmy\n n\n..." }, 702 { "Hi, my name is\nTom", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." }, 703 { "Hi, my name is\nTom", 0, 3, true, "..." }, 704 { "Hi, my name is\nTom", 1, 3, true, "Hi,\n..." }, 705 { "Hi, my name is\nTom", 2, 3, true, "Hi,\n my\n..." }, 706 { "Hi, my name is\nTom", 3, 3, true, "Hi,\n my\n na\n..." }, 707 { "Hi, my name is\nTom", 4, 3, true, "Hi,\n my\n na\nme \n..." }, 708 { "Hi, my name is\nTom", 5, 3, true, "Hi,\n my\n na\nme \nis\n..." }, 709 { "Hi, my name is\nTom", 1, 4, true, "Hi, \n..." }, 710 { "Hi, my name is\nTom", 2, 4, true, "Hi, \nmy n\n..." }, 711 { "Hi, my name is\nTom", 3, 4, true, "Hi, \nmy n\name \n..." }, 712 { "Hi, my name is\nTom", 4, 4, true, "Hi, \nmy n\name \nis\n..." }, 713 { "Hi, my name is\nTom", 5, 4, false, "Hi, \nmy n\name \nis\nTom" }, 714 { "Hi, my name is\nTom", 1, 5, true, "Hi, \n..." }, 715 { "Hi, my name is\nTom", 2, 5, true, "Hi, \nmy na\n..." }, 716 { "Hi, my name is\nTom", 3, 5, true, "Hi, \nmy na\nme \n..." }, 717 { "Hi, my name is\nTom", 4, 5, true, "Hi, \nmy na\nme \nis\n..." }, 718 { "Hi, my name is\nTom", 5, 5, false, "Hi, \nmy na\nme \nis\nTom" }, 719 { "Hi, my name is\nTom", 1, 6, true, "Hi, \n..." }, 720 { "Hi, my name is\nTom", 2, 6, true, "Hi, \nmy \n..." }, 721 { "Hi, my name is\nTom", 3, 6, true, "Hi, \nmy \nname \n..." }, 722 { "Hi, my name is\nTom", 4, 6, true, "Hi, \nmy \nname \nis\n..." }, 723 { "Hi, my name is\nTom", 5, 6, false, "Hi, \nmy \nname \nis\nTom" }, 724 { "Hi, my name is\nTom", 1, 7, true, "Hi, \n..." }, 725 { "Hi, my name is\nTom", 2, 7, true, "Hi, \nmy \n..." }, 726 { "Hi, my name is\nTom", 3, 7, true, "Hi, \nmy \nname \n..." }, 727 { "Hi, my name is\nTom", 4, 7, true, "Hi, \nmy \nname \nis\n..." }, 728 { "Hi, my name is\nTom", 5, 7, false, "Hi, \nmy \nname \nis\nTom" }, 729 { "Hi, my name is\nTom", 1, 8, true, "Hi, my \n..." }, 730 { "Hi, my name is\nTom", 2, 8, true, "Hi, my \nname \n..." }, 731 { "Hi, my name is\nTom", 3, 8, true, "Hi, my \nname \nis\n..." }, 732 { "Hi, my name is\nTom", 4, 8, false, "Hi, my \nname \nis\nTom" }, 733 { "Hi, my name is\nTom", 1, 9, true, "Hi, my \n..." }, 734 { "Hi, my name is\nTom", 2, 9, true, "Hi, my \nname is\n..." }, 735 { "Hi, my name is\nTom", 3, 9, false, "Hi, my \nname is\nTom" }, 736 { "Hi, my name is\nTom", 1, 10, true, "Hi, my \n..." }, 737 { "Hi, my name is\nTom", 2, 10, true, "Hi, my \nname is\n..." }, 738 { "Hi, my name is\nTom", 3, 10, false, "Hi, my \nname is\nTom" }, 739 { "Hi, my name is\nTom", 1, 11, true, "Hi, my \n..." }, 740 { "Hi, my name is\nTom", 2, 11, true, "Hi, my \nname is\n..." }, 741 { "Hi, my name is\nTom", 3, 11, false, "Hi, my \nname is\nTom" }, 742 { "Hi, my name is\nTom", 1, 12, true, "Hi, my \n..." }, 743 { "Hi, my name is\nTom", 2, 12, true, "Hi, my \nname is\n..." }, 744 { "Hi, my name is\nTom", 3, 12, false, "Hi, my \nname is\nTom" }, 745 { "Hi, my name is\nTom", 1, 13, true, "Hi, my name \n..." }, 746 { "Hi, my name is\nTom", 2, 13, true, "Hi, my name \nis\n..." }, 747 { "Hi, my name is\nTom", 3, 13, false, "Hi, my name \nis\nTom" }, 748 { "Hi, my name is\nTom", 1, 20, true, "Hi, my name is\n..." }, 749 { "Hi, my name is\nTom", 2, 20, false, "Hi, my name is\nTom" }, 750 { "Hi, my name is Tom", 1, 40, false, "Hi, my name is Tom" }, 751 }; 752 base::string16 output; 753 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 754 EXPECT_EQ(cases[i].result, 755 ElideRectangleString(UTF8ToUTF16(cases[i].input), 756 cases[i].max_rows, cases[i].max_cols, 757 true, &output)); 758 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output)); 759 } 760 } 761 762 TEST(TextEliderTest, ElideRectangleStringNotStrict) { 763 struct TestData { 764 const char* input; 765 int max_rows; 766 int max_cols; 767 bool result; 768 const char* output; 769 } cases[] = { 770 { "", 0, 0, false, "" }, 771 { "", 1, 1, false, "" }, 772 { "Hi, my name_is\nDick", 0, 0, true, "..." }, 773 { "Hi, my name_is\nDick", 1, 0, true, "\n..." }, 774 { "Hi, my name_is\nDick", 0, 1, true, "..." }, 775 { "Hi, my name_is\nDick", 1, 1, true, "H\n..." }, 776 { "Hi, my name_is\nDick", 2, 1, true, "H\ni\n..." }, 777 { "Hi, my name_is\nDick", 3, 1, true, "H\ni\n,\n..." }, 778 { "Hi, my name_is\nDick", 4, 1, true, "H\ni\n,\n \n..." }, 779 { "Hi, my name_is\nDick", 5, 1, true, "H\ni\n,\n \nm\n..." }, 780 { "Hi, my name_is\nDick", 0, 2, true, "..." }, 781 { "Hi, my name_is\nDick", 1, 2, true, "Hi\n..." }, 782 { "Hi, my name_is\nDick", 2, 2, true, "Hi\n, \n..." }, 783 { "Hi, my name_is\nDick", 3, 2, true, "Hi\n, \nmy\n..." }, 784 { "Hi, my name_is\nDick", 4, 2, true, "Hi\n, \nmy\n n\n..." }, 785 { "Hi, my name_is\nDick", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." }, 786 { "Hi, my name_is\nDick", 0, 3, true, "..." }, 787 { "Hi, my name_is\nDick", 1, 3, true, "Hi,\n..." }, 788 { "Hi, my name_is\nDick", 2, 3, true, "Hi,\n my\n..." }, 789 { "Hi, my name_is\nDick", 3, 3, true, "Hi,\n my\n na\n..." }, 790 { "Hi, my name_is\nDick", 4, 3, true, "Hi,\n my\n na\nme_\n..." }, 791 { "Hi, my name_is\nDick", 5, 3, true, "Hi,\n my\n na\nme_\nis\n..." }, 792 { "Hi, my name_is\nDick", 1, 4, true, "Hi, ..." }, 793 { "Hi, my name_is\nDick", 2, 4, true, "Hi, my n\n..." }, 794 { "Hi, my name_is\nDick", 3, 4, true, "Hi, my n\name_\n..." }, 795 { "Hi, my name_is\nDick", 4, 4, true, "Hi, my n\name_\nis\n..." }, 796 { "Hi, my name_is\nDick", 5, 4, false, "Hi, my n\name_\nis\nDick" }, 797 { "Hi, my name_is\nDick", 1, 5, true, "Hi, ..." }, 798 { "Hi, my name_is\nDick", 2, 5, true, "Hi, my na\n..." }, 799 { "Hi, my name_is\nDick", 3, 5, true, "Hi, my na\nme_is\n..." }, 800 { "Hi, my name_is\nDick", 4, 5, true, "Hi, my na\nme_is\n\n..." }, 801 { "Hi, my name_is\nDick", 5, 5, false, "Hi, my na\nme_is\n\nDick" }, 802 { "Hi, my name_is\nDick", 1, 6, true, "Hi, ..." }, 803 { "Hi, my name_is\nDick", 2, 6, true, "Hi, my nam\n..." }, 804 { "Hi, my name_is\nDick", 3, 6, true, "Hi, my nam\ne_is\n..." }, 805 { "Hi, my name_is\nDick", 4, 6, false, "Hi, my nam\ne_is\nDick" }, 806 { "Hi, my name_is\nDick", 5, 6, false, "Hi, my nam\ne_is\nDick" }, 807 { "Hi, my name_is\nDick", 1, 7, true, "Hi, ..." }, 808 { "Hi, my name_is\nDick", 2, 7, true, "Hi, my name\n..." }, 809 { "Hi, my name_is\nDick", 3, 7, true, "Hi, my name\n_is\n..." }, 810 { "Hi, my name_is\nDick", 4, 7, false, "Hi, my name\n_is\nDick" }, 811 { "Hi, my name_is\nDick", 5, 7, false, "Hi, my name\n_is\nDick" }, 812 { "Hi, my name_is\nDick", 1, 8, true, "Hi, my n\n..." }, 813 { "Hi, my name_is\nDick", 2, 8, true, "Hi, my n\name_is\n..." }, 814 { "Hi, my name_is\nDick", 3, 8, false, "Hi, my n\name_is\nDick" }, 815 { "Hi, my name_is\nDick", 1, 9, true, "Hi, my ..." }, 816 { "Hi, my name_is\nDick", 2, 9, true, "Hi, my name_is\n..." }, 817 { "Hi, my name_is\nDick", 3, 9, false, "Hi, my name_is\nDick" }, 818 { "Hi, my name_is\nDick", 1, 10, true, "Hi, my ..." }, 819 { "Hi, my name_is\nDick", 2, 10, true, "Hi, my name_is\n..." }, 820 { "Hi, my name_is\nDick", 3, 10, false, "Hi, my name_is\nDick" }, 821 { "Hi, my name_is\nDick", 1, 11, true, "Hi, my ..." }, 822 { "Hi, my name_is\nDick", 2, 11, true, "Hi, my name_is\n..." }, 823 { "Hi, my name_is\nDick", 3, 11, false, "Hi, my name_is\nDick" }, 824 { "Hi, my name_is\nDick", 1, 12, true, "Hi, my ..." }, 825 { "Hi, my name_is\nDick", 2, 12, true, "Hi, my name_is\n..." }, 826 { "Hi, my name_is\nDick", 3, 12, false, "Hi, my name_is\nDick" }, 827 { "Hi, my name_is\nDick", 1, 13, true, "Hi, my ..." }, 828 { "Hi, my name_is\nDick", 2, 13, true, "Hi, my name_is\n..." }, 829 { "Hi, my name_is\nDick", 3, 13, false, "Hi, my name_is\nDick" }, 830 { "Hi, my name_is\nDick", 1, 20, true, "Hi, my name_is\n..." }, 831 { "Hi, my name_is\nDick", 2, 20, false, "Hi, my name_is\nDick" }, 832 { "Hi, my name_is Dick", 1, 40, false, "Hi, my name_is Dick" }, 833 }; 834 base::string16 output; 835 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) { 836 EXPECT_EQ(cases[i].result, 837 ElideRectangleString(UTF8ToUTF16(cases[i].input), 838 cases[i].max_rows, cases[i].max_cols, 839 false, &output)); 840 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output)); 841 } 842 } 843 844 TEST(TextEliderTest, ElideRectangleWide16) { 845 // Two greek words separated by space. 846 const base::string16 str(WideToUTF16( 847 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9" 848 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2")); 849 const base::string16 out1(WideToUTF16( 850 L"\x03a0\x03b1\x03b3\x03ba\n" 851 L"\x03cc\x03c3\x03bc\x03b9\n" 852 L"...")); 853 const base::string16 out2(WideToUTF16( 854 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9\x03bf\x03c2\x0020\n" 855 L"\x0399\x03c3\x03c4\x03cc\x03c2")); 856 base::string16 output; 857 EXPECT_TRUE(ElideRectangleString(str, 2, 4, true, &output)); 858 EXPECT_EQ(out1, output); 859 EXPECT_FALSE(ElideRectangleString(str, 2, 12, true, &output)); 860 EXPECT_EQ(out2, output); 861 } 862 863 TEST(TextEliderTest, ElideRectangleWide32) { 864 // Four U+1D49C MATHEMATICAL SCRIPT CAPITAL A followed by space "aaaaa". 865 const base::string16 str(UTF8ToUTF16( 866 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C" 867 " aaaaa")); 868 const base::string16 out(UTF8ToUTF16( 869 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\n" 870 "\xF0\x9D\x92\x9C \naaa\n...")); 871 base::string16 output; 872 EXPECT_TRUE(ElideRectangleString(str, 3, 3, true, &output)); 873 EXPECT_EQ(out, output); 874 } 875 876 TEST(TextEliderTest, TruncateString) { 877 base::string16 string = ASCIIToUTF16("foooooey bxxxar baz"); 878 879 // Tests that apply to both break behaviors: 880 881 // Make sure it doesn't modify the string if length > string length. 882 EXPECT_EQ(string, TruncateString(string, 100, WORD_BREAK)); 883 EXPECT_EQ(string, TruncateString(string, 100, CHARACTER_BREAK)); 884 885 // Test no characters. 886 EXPECT_EQ(L"", UTF16ToWide(TruncateString(string, 0, WORD_BREAK))); 887 EXPECT_EQ(L"", UTF16ToWide(TruncateString(string, 0, CHARACTER_BREAK))); 888 889 // Test 1 character. 890 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(string, 1, WORD_BREAK))); 891 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(string, 1, CHARACTER_BREAK))); 892 893 // Test completely truncates string if break is on initial whitespace. 894 EXPECT_EQ(L"\x2026", 895 UTF16ToWide(TruncateString(ASCIIToUTF16(" "), 2, WORD_BREAK))); 896 EXPECT_EQ(L"\x2026", 897 UTF16ToWide(TruncateString(ASCIIToUTF16(" "), 2, 898 CHARACTER_BREAK))); 899 900 // Break-only-at-word-boundaries tests: 901 902 // Test adds ... at right spot when there is enough room to break at a 903 // word boundary. 904 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 14, 905 WORD_BREAK))); 906 907 // Test adds ... at right spot when there is not enough space in first word. 908 EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(string, 2, WORD_BREAK))); 909 910 // Test adds ... at right spot when there is not enough room to break at a 911 // word boundary. 912 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 11, 913 WORD_BREAK))); 914 915 // Break-anywhere tests: 916 917 // Test adds ... at right spot within a word. 918 EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(string, 2, 919 CHARACTER_BREAK))); 920 921 // Test removes trailing whitespace if break falls between words. 922 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 12, 923 CHARACTER_BREAK))); 924 } 925 926 } // namespace gfx 927
