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Removed unused icon resources from app_list.
[chromium-blink-merge.git] / ui / gfx / text_elider_unittest.cc
blob01269ae7315a949118cc4aaddd193e023f49c94f
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/font_render_params.h"
18 #include "ui/gfx/text_utils.h"
19
20 using base::ASCIIToUTF16;
21 using base::UTF16ToUTF8;
22 using base::UTF16ToWide;
23 using base::UTF8ToUTF16;
24 using base::WideToUTF16;
25
26 namespace gfx {
27
28 namespace {
29
30 struct Testcase {
31 const std::string input;
32 const std::string output;
33 };
34
35 struct FileTestcase {
36 const base::FilePath::StringType input;
37 const std::string output;
38 };
39
40 struct UTF16Testcase {
41 const base::string16 input;
42 const base::string16 output;
43 };
44
45 struct TestData {
46 const std::string a;
47 const std::string b;
48 const int compare_result;
49 };
50
51 } // namespace
52
53 // TODO(ios): This test fails on iOS because iOS version of GetStringWidthF
54 // that calls [NSString sizeWithFont] returns the rounded string width.
55 // TODO(338784): Enable this on android.
56 #if defined(OS_IOS) || defined(OS_ANDROID)
57 #define MAYBE_ElideEmail DISABLED_ElideEmail
58 #else
59 #define MAYBE_ElideEmail ElideEmail
60 #endif
61 TEST(TextEliderTest, MAYBE_ElideEmail) {
62 const std::string kEllipsisStr(kEllipsis);
63
64 // Test emails and their expected elided forms (from which the available
65 // widths will be derived).
66 // For elided forms in which both the username and domain must be elided:
67 // the result (how many characters are left on each side) can be font
68 // dependent. To avoid this, the username is prefixed with the characters
69 // expected to remain in the domain.
70 Testcase testcases[] = {
71 {"g@g.c", "g@g.c"},
72 {"g@g.c", kEllipsisStr},
73 {"ga@co.ca", "ga@c" + kEllipsisStr + "a"},
74 {"short@small.com", "s" + kEllipsisStr + "@s" + kEllipsisStr},
75 {"short@small.com", "s" + kEllipsisStr + "@small.com"},
76 {"short@longbutlotsofspace.com", "short@longbutlotsofspace.com"},
77 {"short@longbutnotverymuchspace.com",
78 "short@long" + kEllipsisStr + ".com"},
79 {"la_short@longbutverytightspace.ca",
80 "la" + kEllipsisStr + "@l" + kEllipsisStr + "a"},
81 {"longusername@gmail.com", "long" + kEllipsisStr + "@gmail.com"},
82 {"elidetothemax@justfits.com", "e" + kEllipsisStr + "@justfits.com"},
83 {"thatom_somelongemail@thatdoesntfit.com",
84 "thatom" + kEllipsisStr + "@tha" + kEllipsisStr + "om"},
85 {"namefits@butthedomaindoesnt.com",
86 "namefits@butthedo" + kEllipsisStr + "snt.com"},
87 {"widthtootight@nospace.com", kEllipsisStr},
88 {"nospaceforusername@l", kEllipsisStr},
89 {"little@littlespace.com", "l" + kEllipsisStr + "@l" + kEllipsisStr},
90 {"l@llllllllllllllllllllllll.com", "l@lllll" + kEllipsisStr + ".com"},
91 {"messed\"up@whyanat\"++@notgoogley.com",
92 "messed\"up@whyanat\"++@notgoogley.com"},
93 {"messed\"up@whyanat\"++@notgoogley.com",
94 "messed\"up@why" + kEllipsisStr + "@notgoogley.com"},
95 {"noca_messed\"up@whyanat\"++@notgoogley.ca",
96 "noca" + kEllipsisStr + "@no" + kEllipsisStr + "ca"},
97 {"at\"@@@@@@@@@...@@.@.@.@@@\"@madness.com",
98 "at\"@@@@@@@@@...@@.@." + kEllipsisStr + "@madness.com"},
99 // Special case: "m..." takes more than half of the available width; thus
100 // the domain must elide to "l..." and not "l...l" as it must allow enough
101 // space for the minimal username elision although its half of the
102 // available width would normally allow it to elide to "l...l".
103 {"mmmmm@llllllllll", "m" + kEllipsisStr + "@l" + kEllipsisStr},
104 };
105
106 const FontList font_list;
107 for (size_t i = 0; i < arraysize(testcases); ++i) {
108 const base::string16 expected_output = UTF8ToUTF16(testcases[i].output);
109 EXPECT_EQ(expected_output,
110 ElideText(UTF8ToUTF16(testcases[i].input), font_list,
111 GetStringWidthF(expected_output, font_list),
112 ELIDE_EMAIL));
113 }
114 }
115
116 // TODO(338784): Enable this on android.
117 #if defined(OS_ANDROID)
118 #define MAYBE_ElideEmailMoreSpace DISABLED_ElideEmailMoreSpace
119 #else
120 #define MAYBE_ElideEmailMoreSpace ElideEmailMoreSpace
121 #endif
122 TEST(TextEliderTest, MAYBE_ElideEmailMoreSpace) {
123 const int test_width_factors[] = {
124 100,
125 10000,
126 1000000,
127 };
128 const std::string test_emails[] = {
129 "a@c",
130 "test@email.com",
131 "short@verysuperdupperlongdomain.com",
132 "supermegalongusername@withasuperlonnnggggdomain.gouv.qc.ca",
133 };
134
135 const FontList font_list;
136 for (size_t i = 0; i < arraysize(test_width_factors); ++i) {
137 const int test_width =
138 font_list.GetExpectedTextWidth(test_width_factors[i]);
139 for (size_t j = 0; j < arraysize(test_emails); ++j) {
140 // Extra space is available: the email should not be elided.
141 const base::string16 test_email = UTF8ToUTF16(test_emails[j]);
142 EXPECT_EQ(test_email,
143 ElideText(test_email, font_list, test_width, ELIDE_EMAIL));
144 }
145 }
146 }
147
148 // TODO(ios): This test fails on iOS because iOS version of GetStringWidthF
149 // that calls [NSString sizeWithFont] returns the rounded string width.
150 // TODO(338784): Enable this on android.
151 #if defined(OS_IOS) || defined(OS_ANDROID)
152 #define MAYBE_TestFilenameEliding DISABLED_TestFilenameEliding
153 #else
154 #define MAYBE_TestFilenameEliding TestFilenameEliding
155 #endif
156 TEST(TextEliderTest, MAYBE_TestFilenameEliding) {
157 const std::string kEllipsisStr(kEllipsis);
158 const base::FilePath::StringType kPathSeparator =
159 base::FilePath::StringType().append(1, base::FilePath::kSeparators[0]);
160
161 FileTestcase testcases[] = {
162 {FILE_PATH_LITERAL(""), ""},
163 {FILE_PATH_LITERAL("."), "."},
164 {FILE_PATH_LITERAL("filename.exe"), "filename.exe"},
165 {FILE_PATH_LITERAL(".longext"), ".longext"},
166 {FILE_PATH_LITERAL("pie"), "pie"},
167 {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") +
168 kPathSeparator + FILE_PATH_LITERAL("filename.pie"),
169 "filename.pie"},
170 {FILE_PATH_LITERAL("c:") + kPathSeparator + FILE_PATH_LITERAL("path") +
171 kPathSeparator + FILE_PATH_LITERAL("longfilename.pie"),
172 "long" + kEllipsisStr + ".pie"},
173 {FILE_PATH_LITERAL("http://path.com/filename.pie"), "filename.pie"},
174 {FILE_PATH_LITERAL("http://path.com/longfilename.pie"),
175 "long" + kEllipsisStr + ".pie"},
176 {FILE_PATH_LITERAL("piesmashingtacularpants"), "pie" + kEllipsisStr},
177 {FILE_PATH_LITERAL(".piesmashingtacularpants"), ".pie" + kEllipsisStr},
178 {FILE_PATH_LITERAL("cheese."), "cheese."},
179 {FILE_PATH_LITERAL("file name.longext"),
180 "file" + kEllipsisStr + ".longext"},
181 {FILE_PATH_LITERAL("fil ename.longext"),
182 "fil " + kEllipsisStr + ".longext"},
183 {FILE_PATH_LITERAL("filename.longext"),
184 "file" + kEllipsisStr + ".longext"},
185 {FILE_PATH_LITERAL("filename.middleext.longext"),
186 "filename.mid" + kEllipsisStr + ".longext"},
187 {FILE_PATH_LITERAL("filename.superduperextremelylongext"),
188 "filename.sup" + kEllipsisStr + "emelylongext"},
189 {FILE_PATH_LITERAL("filenamereallylongtext.superduperextremelylongext"),
190 "filenamereall" + kEllipsisStr + "emelylongext"},
191 {FILE_PATH_LITERAL("file.name.really.long.text.superduperextremelylongext"),
192 "file.name.re" + kEllipsisStr + "emelylongext"}
193 };
194
195 static const FontList font_list;
196 for (size_t i = 0; i < arraysize(testcases); ++i) {
197 base::FilePath filepath(testcases[i].input);
198 base::string16 expected = UTF8ToUTF16(testcases[i].output);
199 expected = base::i18n::GetDisplayStringInLTRDirectionality(expected);
200 EXPECT_EQ(expected, ElideFilename(filepath, font_list,
201 GetStringWidthF(UTF8ToUTF16(testcases[i].output), font_list)));
202 }
203 }
204
205 // TODO(338784): Enable this on android.
206 #if defined(OS_ANDROID)
207 #define MAYBE_ElideTextTruncate DISABLED_ElideTextTruncate
208 #else
209 #define MAYBE_ElideTextTruncate ElideTextTruncate
210 #endif
211 TEST(TextEliderTest, MAYBE_ElideTextTruncate) {
212 const FontList font_list;
213 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
214 struct TestData {
215 const char* input;
216 float width;
217 const char* output;
218 } cases[] = {
219 { "", 0, "" },
220 { "Test", 0, "" },
221 { "", kTestWidth, "" },
222 { "Tes", kTestWidth, "Tes" },
223 { "Test", kTestWidth, "Test" },
224 { "Tests", kTestWidth, "Test" },
225 };
226
227 for (size_t i = 0; i < arraysize(cases); ++i) {
228 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
229 cases[i].width, TRUNCATE);
230 EXPECT_EQ(cases[i].output, UTF16ToUTF8(result));
231 }
232 }
233
234 // TODO(338784): Enable this on android.
235 #if defined(OS_ANDROID)
236 #define MAYBE_ElideTextEllipsis DISABLED_ElideTextEllipsis
237 #else
238 #define MAYBE_ElideTextEllipsis ElideTextEllipsis
239 #endif
240 TEST(TextEliderTest, MAYBE_ElideTextEllipsis) {
241 const FontList font_list;
242 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
243 const char* kEllipsis = "\xE2\x80\xA6";
244 const float kEllipsisWidth =
245 GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list);
246 struct TestData {
247 const char* input;
248 float width;
249 const char* output;
250 } cases[] = {
251 { "", 0, "" },
252 { "Test", 0, "" },
253 { "Test", kEllipsisWidth, kEllipsis },
254 { "", kTestWidth, "" },
255 { "Tes", kTestWidth, "Tes" },
256 { "Test", kTestWidth, "Test" },
257 };
258
259 for (size_t i = 0; i < arraysize(cases); ++i) {
260 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
261 cases[i].width, ELIDE_TAIL);
262 EXPECT_EQ(cases[i].output, UTF16ToUTF8(result));
263 }
264 }
265
266 // TODO(338784): Enable this on android.
267 #if defined(OS_ANDROID)
268 #define MAYBE_ElideTextEllipsisFront DISABLED_ElideTextEllipsisFront
269 #else
270 #define MAYBE_ElideTextEllipsisFront ElideTextEllipsisFront
271 #endif
272 TEST(TextEliderTest, MAYBE_ElideTextEllipsisFront) {
273 const FontList font_list;
274 const float kTestWidth = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
275 const std::string kEllipsisStr(kEllipsis);
276 const float kEllipsisWidth =
277 GetStringWidthF(UTF8ToUTF16(kEllipsis), font_list);
278 const float kEllipsis23Width =
279 GetStringWidthF(UTF8ToUTF16(kEllipsisStr + "23"), font_list);
280 struct TestData {
281 const char* input;
282 float width;
283 const base::string16 output;
284 } cases[] = {
285 { "", 0, base::string16() },
286 { "Test", 0, base::string16() },
287 { "Test", kEllipsisWidth, UTF8ToUTF16(kEllipsisStr) },
288 { "", kTestWidth, base::string16() },
289 { "Tes", kTestWidth, ASCIIToUTF16("Tes") },
290 { "Test", kTestWidth, ASCIIToUTF16("Test") },
291 { "Test123", kEllipsis23Width, UTF8ToUTF16(kEllipsisStr + "23") },
292 };
293
294 for (size_t i = 0; i < arraysize(cases); ++i) {
295 base::string16 result = ElideText(UTF8ToUTF16(cases[i].input), font_list,
296 cases[i].width, ELIDE_HEAD);
297 EXPECT_EQ(cases[i].output, result);
298 }
299 }
300
301 // Checks that all occurrences of |first_char| are followed by |second_char| and
302 // all occurrences of |second_char| are preceded by |first_char| in |text|.
303 static void CheckSurrogatePairs(const base::string16& text,
304 base::char16 first_char,
305 base::char16 second_char) {
306 for (size_t index = 0; index < text.length(); ++index) {
307 EXPECT_NE(second_char, text[index]);
308 if (text[index] == first_char) {
309 ASSERT_LT(++index, text.length());
310 EXPECT_EQ(second_char, text[index]);
311 }
312 }
313 }
314
315 // TODO(338784): Enable this on android.
316 #if defined(OS_ANDROID)
317 #define MAYBE_ElideTextSurrogatePairs DISABLED_ElideTextSurrogatePairs
318 #else
319 #define MAYBE_ElideTextSurrogatePairs ElideTextSurrogatePairs
320 #endif
321 TEST(TextEliderTest, MAYBE_ElideTextSurrogatePairs) {
322 const FontList font_list;
323 // The below is 'MUSICAL SYMBOL G CLEF', which is represented in UTF-16 as
324 // two characters forming a surrogate pair 0x0001D11E.
325 const std::string kSurrogate = "\xF0\x9D\x84\x9E";
326 const base::string16 kTestString = UTF8ToUTF16(kSurrogate + "x" + kSurrogate);
327 const float kTestStringWidth = GetStringWidthF(kTestString, font_list);
328 const base::char16 kSurrogateFirstChar = kTestString[0];
329 const base::char16 kSurrogateSecondChar = kTestString[1];
330 base::string16 result;
331
332 // Elide |kTextString| to all possible widths and check that no instance of
333 // |kSurrogate| was split in two.
334 for (float width = 0; width <= kTestStringWidth; width++) {
335 result = ElideText(kTestString, font_list, width, TRUNCATE);
336 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
337
338 result = ElideText(kTestString, font_list, width, ELIDE_TAIL);
339 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
340
341 result = ElideText(kTestString, font_list, width, ELIDE_MIDDLE);
342 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
343
344 result = ElideText(kTestString, font_list, width, ELIDE_HEAD);
345 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
346 }
347 }
348
349 // TODO(338784): Enable this on android.
350 #if defined(OS_ANDROID)
351 #define MAYBE_ElideTextLongStrings DISABLED_ElideTextLongStrings
352 #else
353 #define MAYBE_ElideTextLongStrings ElideTextLongStrings
354 #endif
355 TEST(TextEliderTest, MAYBE_ElideTextLongStrings) {
356 const base::string16 kEllipsisStr = UTF8ToUTF16(kEllipsis);
357 base::string16 data_scheme(UTF8ToUTF16("data:text/plain,"));
358 size_t data_scheme_length = data_scheme.length();
359
360 base::string16 ten_a(10, 'a');
361 base::string16 hundred_a(100, 'a');
362 base::string16 thousand_a(1000, 'a');
363 base::string16 ten_thousand_a(10000, 'a');
364 base::string16 hundred_thousand_a(100000, 'a');
365 base::string16 million_a(1000000, 'a');
366
367 // TODO(gbillock): Improve these tests by adding more string diversity and
368 // doing string compares instead of length compares. See bug 338836.
369
370 size_t number_of_as = 156;
371 base::string16 long_string_end(
372 data_scheme + base::string16(number_of_as, 'a') + kEllipsisStr);
373 UTF16Testcase testcases_end[] = {
374 { data_scheme + ten_a, data_scheme + ten_a },
375 { data_scheme + hundred_a, data_scheme + hundred_a },
376 { data_scheme + thousand_a, long_string_end },
377 { data_scheme + ten_thousand_a, long_string_end },
378 { data_scheme + hundred_thousand_a, long_string_end },
379 { data_scheme + million_a, long_string_end },
380 };
381
382 const FontList font_list;
383 float ellipsis_width = GetStringWidthF(kEllipsisStr, font_list);
384 for (size_t i = 0; i < arraysize(testcases_end); ++i) {
385 // Compare sizes rather than actual contents because if the test fails,
386 // output is rather long.
387 EXPECT_EQ(testcases_end[i].output.size(),
388 ElideText(testcases_end[i].input, font_list,
389 GetStringWidthF(testcases_end[i].output, font_list),
390 ELIDE_TAIL).size());
391 EXPECT_EQ(kEllipsisStr,
392 ElideText(testcases_end[i].input, font_list, ellipsis_width,
393 ELIDE_TAIL));
394 }
395
396 size_t number_of_trailing_as = (data_scheme_length + number_of_as) / 2;
397 base::string16 long_string_middle(data_scheme +
398 base::string16(number_of_as - number_of_trailing_as, 'a') + kEllipsisStr +
399 base::string16(number_of_trailing_as, 'a'));
400 UTF16Testcase testcases_middle[] = {
401 { data_scheme + ten_a, data_scheme + ten_a },
402 { data_scheme + hundred_a, data_scheme + hundred_a },
403 { data_scheme + thousand_a, long_string_middle },
404 { data_scheme + ten_thousand_a, long_string_middle },
405 { data_scheme + hundred_thousand_a, long_string_middle },
406 { data_scheme + million_a, long_string_middle },
407 };
408
409 for (size_t i = 0; i < arraysize(testcases_middle); ++i) {
410 // Compare sizes rather than actual contents because if the test fails,
411 // output is rather long.
412 EXPECT_EQ(testcases_middle[i].output.size(),
413 ElideText(testcases_middle[i].input, font_list,
414 GetStringWidthF(testcases_middle[i].output, font_list),
415 ELIDE_MIDDLE).size());
416 EXPECT_EQ(kEllipsisStr,
417 ElideText(testcases_middle[i].input, font_list, ellipsis_width,
418 ELIDE_MIDDLE));
419 }
420
421 base::string16 long_string_beginning(
422 kEllipsisStr + base::string16(number_of_as, 'a'));
423 UTF16Testcase testcases_beginning[] = {
424 { data_scheme + ten_a, data_scheme + ten_a },
425 { data_scheme + hundred_a, data_scheme + hundred_a },
426 { data_scheme + thousand_a, long_string_beginning },
427 { data_scheme + ten_thousand_a, long_string_beginning },
428 { data_scheme + hundred_thousand_a, long_string_beginning },
429 { data_scheme + million_a, long_string_beginning },
430 };
431 for (size_t i = 0; i < arraysize(testcases_beginning); ++i) {
432 EXPECT_EQ(testcases_beginning[i].output.size(),
433 ElideText(
434 testcases_beginning[i].input, font_list,
435 GetStringWidthF(testcases_beginning[i].output, font_list),
436 ELIDE_HEAD).size());
437 EXPECT_EQ(kEllipsisStr,
438 ElideText(testcases_beginning[i].input, font_list, ellipsis_width,
439 ELIDE_HEAD));
440 }
441 }
442
443 TEST(TextEliderTest, ElideString) {
444 struct TestData {
445 const char* input;
446 int max_len;
447 bool result;
448 const char* output;
449 } cases[] = {
450 { "Hello", 0, true, "" },
451 { "", 0, false, "" },
452 { "Hello, my name is Tom", 1, true, "H" },
453 { "Hello, my name is Tom", 2, true, "He" },
454 { "Hello, my name is Tom", 3, true, "H.m" },
455 { "Hello, my name is Tom", 4, true, "H..m" },
456 { "Hello, my name is Tom", 5, true, "H...m" },
457 { "Hello, my name is Tom", 6, true, "He...m" },
458 { "Hello, my name is Tom", 7, true, "He...om" },
459 { "Hello, my name is Tom", 10, true, "Hell...Tom" },
460 { "Hello, my name is Tom", 100, false, "Hello, my name is Tom" }
461 };
462 for (size_t i = 0; i < arraysize(cases); ++i) {
463 base::string16 output;
464 EXPECT_EQ(cases[i].result,
465 ElideString(UTF8ToUTF16(cases[i].input),
466 cases[i].max_len, &output));
467 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
468 }
469 }
470
471 // TODO(338784): Enable this on android.
472 #if defined(OS_ANDROID)
473 #define MAYBE_ElideRectangleText DISABLED_ElideRectangleText
474 #else
475 #define MAYBE_ElideRectangleText ElideRectangleText
476 #endif
477 TEST(TextEliderTest, MAYBE_ElideRectangleText) {
478 const FontList font_list;
479 const int line_height = font_list.GetHeight();
480 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
481
482 struct TestData {
483 const char* input;
484 float available_pixel_width;
485 int available_pixel_height;
486 bool truncated_y;
487 const char* output;
488 } cases[] = {
489 { "", 0, 0, false, NULL },
490 { "", 1, 1, false, NULL },
491 { "Test", test_width, 0, true, NULL },
492 { "Test", test_width, 1, false, "Test" },
493 { "Test", test_width, line_height, false, "Test" },
494 { "Test Test", test_width, line_height, true, "Test" },
495 { "Test Test", test_width, line_height + 1, false, "Test|Test" },
496 { "Test Test", test_width, line_height * 2, false, "Test|Test" },
497 { "Test Test", test_width, line_height * 3, false, "Test|Test" },
498 { "Test Test", test_width * 2, line_height * 2, false, "Test|Test" },
499 { "Test Test", test_width * 3, line_height, false, "Test Test" },
500 { "Test\nTest", test_width * 3, line_height * 2, false, "Test|Test" },
501 { "Te\nst Te", test_width, line_height * 3, false, "Te|st|Te" },
502 { "\nTest", test_width, line_height * 2, false, "|Test" },
503 { "\nTest", test_width, line_height, true, "" },
504 { "\n\nTest", test_width, line_height * 3, false, "||Test" },
505 { "\n\nTest", test_width, line_height * 2, true, "|" },
506 { "Test\n", 2 * test_width, line_height * 5, false, "Test|" },
507 { "Test\n\n", 2 * test_width, line_height * 5, false, "Test||" },
508 { "Test\n\n\n", 2 * test_width, line_height * 5, false, "Test|||" },
509 { "Test\nTest\n\n", 2 * test_width, line_height * 5, false, "Test|Test||" },
510 { "Test\n\nTest\n", 2 * test_width, line_height * 5, false, "Test||Test|" },
511 { "Test\n\n\nTest", 2 * test_width, line_height * 5, false, "Test|||Test" },
512 { "Te ", test_width, line_height, false, "Te" },
513 { "Te Te Test", test_width, 3 * line_height, false, "Te|Te|Test" },
514 };
515
516 for (size_t i = 0; i < arraysize(cases); ++i) {
517 std::vector<base::string16> lines;
518 EXPECT_EQ(cases[i].truncated_y ? INSUFFICIENT_SPACE_VERTICAL : 0,
519 ElideRectangleText(UTF8ToUTF16(cases[i].input),
520 font_list,
521 cases[i].available_pixel_width,
522 cases[i].available_pixel_height,
523 TRUNCATE_LONG_WORDS,
524 &lines));
525 if (cases[i].output) {
526 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
527 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
528 } else {
529 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
530 }
531 }
532 }
533
534 // TODO(338784): Enable this on android.
535 #if defined(OS_ANDROID)
536 #define MAYBE_ElideRectangleTextPunctuation \
537 DISABLED_ElideRectangleTextPunctuation
538 #else
539 #define MAYBE_ElideRectangleTextPunctuation ElideRectangleTextPunctuation
540 #endif
541 TEST(TextEliderTest, MAYBE_ElideRectangleTextPunctuation) {
542 const FontList font_list;
543 const int line_height = font_list.GetHeight();
544 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
545 const float test_t_width = GetStringWidthF(ASCIIToUTF16("Test T"), font_list);
546
547 struct TestData {
548 const char* input;
549 float available_pixel_width;
550 int available_pixel_height;
551 bool wrap_words;
552 bool truncated_x;
553 const char* output;
554 } cases[] = {
555 { "Test T.", test_t_width, line_height * 2, false, false, "Test|T." },
556 { "Test T ?", test_t_width, line_height * 2, false, false, "Test|T ?" },
557 { "Test. Test", test_width, line_height * 3, false, true, "Test|Test" },
558 { "Test. Test", test_width, line_height * 3, true, false, "Test|.|Test" },
559 };
560
561 for (size_t i = 0; i < arraysize(cases); ++i) {
562 std::vector<base::string16> lines;
563 const WordWrapBehavior wrap_behavior =
564 (cases[i].wrap_words ? WRAP_LONG_WORDS : TRUNCATE_LONG_WORDS);
565 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
566 ElideRectangleText(UTF8ToUTF16(cases[i].input),
567 font_list,
568 cases[i].available_pixel_width,
569 cases[i].available_pixel_height,
570 wrap_behavior,
571 &lines));
572 if (cases[i].output) {
573 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
574 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
575 } else {
576 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
577 }
578 }
579 }
580
581 // TODO(338784): Enable this on android.
582 #if defined(OS_ANDROID)
583 #define MAYBE_ElideRectangleTextLongWords DISABLED_ElideRectangleTextLongWords
584 #else
585 #define MAYBE_ElideRectangleTextLongWords ElideRectangleTextLongWords
586 #endif
587 TEST(TextEliderTest, MAYBE_ElideRectangleTextLongWords) {
588 const FontList font_list;
589 const int kAvailableHeight = 1000;
590 const base::string16 kElidedTesting =
591 UTF8ToUTF16(std::string("Tes") + kEllipsis);
592 const float elided_width = GetStringWidthF(kElidedTesting, font_list);
593 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
594
595 struct TestData {
596 const char* input;
597 float available_pixel_width;
598 WordWrapBehavior wrap_behavior;
599 bool truncated_x;
600 const char* output;
601 } cases[] = {
602 { "Testing", test_width, IGNORE_LONG_WORDS, false, "Testing" },
603 { "X Testing", test_width, IGNORE_LONG_WORDS, false, "X|Testing" },
604 { "Test Testing", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
605 { "Test\nTesting", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
606 { "Test Tests ", test_width, IGNORE_LONG_WORDS, false, "Test|Tests" },
607 { "Test Tests T", test_width, IGNORE_LONG_WORDS, false, "Test|Tests|T" },
608
609 { "Testing", elided_width, ELIDE_LONG_WORDS, true, "Tes..." },
610 { "X Testing", elided_width, ELIDE_LONG_WORDS, true, "X|Tes..." },
611 { "Test Testing", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
612 { "Test\nTesting", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
613
614 { "Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test" },
615 { "X Testing", test_width, TRUNCATE_LONG_WORDS, true, "X|Test" },
616 { "Test Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
617 { "Test\nTesting", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
618 { "Test Tests ", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
619 { "Test Tests T", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test|T" },
620
621 { "Testing", test_width, WRAP_LONG_WORDS, false, "Test|ing" },
622 { "X Testing", test_width, WRAP_LONG_WORDS, false, "X|Test|ing" },
623 { "Test Testing", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
624 { "Test\nTesting", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
625 { "Test Tests ", test_width, WRAP_LONG_WORDS, false, "Test|Test|s" },
626 { "Test Tests T", test_width, WRAP_LONG_WORDS, false, "Test|Test|s T" },
627 { "TestTestTest", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test" },
628 { "TestTestTestT", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test|T" },
629 };
630
631 for (size_t i = 0; i < arraysize(cases); ++i) {
632 std::vector<base::string16> lines;
633 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
634 ElideRectangleText(UTF8ToUTF16(cases[i].input),
635 font_list,
636 cases[i].available_pixel_width,
637 kAvailableHeight,
638 cases[i].wrap_behavior,
639 &lines));
640 std::string expected_output(cases[i].output);
641 ReplaceSubstringsAfterOffset(&expected_output, 0, "...", kEllipsis);
642 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
643 EXPECT_EQ(expected_output, result) << "Case " << i << " failed!";
644 }
645 }
646
647 // This test is to make sure that the width of each wrapped line does not
648 // exceed the available width. On some platform like Mac, this test used to
649 // fail because the truncated integer width is returned for the string
650 // and the accumulation of the truncated values causes the elide function
651 // to wrap incorrectly.
652 // TODO(338784): Enable this on android.
653 #if defined(OS_ANDROID)
654 #define MAYBE_ElideRectangleTextCheckLineWidth \
655 DISABLED_ElideRectangleTextCheckLineWidth
656 #else
657 #define MAYBE_ElideRectangleTextCheckLineWidth ElideRectangleTextCheckLineWidth
658 #endif
659 TEST(TextEliderTest, MAYBE_ElideRectangleTextCheckLineWidth) {
660 FontList font_list;
661 #if defined(OS_MACOSX) && !defined(OS_IOS)
662 // Use a specific font to expose the line width exceeding problem.
663 font_list = FontList(Font("LucidaGrande", 12));
664 #endif
665 const float kAvailableWidth = 235;
666 const int kAvailableHeight = 1000;
667 const char text[] = "that Russian place we used to go to after fencing";
668 std::vector<base::string16> lines;
669 EXPECT_EQ(0, ElideRectangleText(UTF8ToUTF16(text),
670 font_list,
671 kAvailableWidth,
672 kAvailableHeight,
673 WRAP_LONG_WORDS,
674 &lines));
675 ASSERT_EQ(2u, lines.size());
676 EXPECT_LE(GetStringWidthF(lines[0], font_list), kAvailableWidth);
677 EXPECT_LE(GetStringWidthF(lines[1], font_list), kAvailableWidth);
678 }
679
680 #ifdef OS_CHROMEOS
681 // This test was created specifically to test a message from crbug.com/415213.
682 // It tests that width of concatenation of words equals sum of widths of the
683 // words.
684 TEST(TextEliderTest, ElideRectangleTextCheckConcatWidthEqualsSumOfWidths) {
685 FontList font_list;
686 font_list = FontList("Noto Sans UI,ui-sans, 12px");
687 SetFontRenderParamsDeviceScaleFactor(1.25f);
688 #define WIDTH(x) GetStringWidthF(UTF8ToUTF16(x), font_list)
689 EXPECT_EQ(WIDTH("The administrator for this account has"),
690 WIDTH("The ") + WIDTH("administrator ") + WIDTH("for ") +
691 WIDTH("this ") + WIDTH("account ") + WIDTH("has"));
692 #undef WIDTH
693 SetFontRenderParamsDeviceScaleFactor(1.0f);
694 }
695 #endif // OS_CHROMEOS
696
697 TEST(TextEliderTest, ElideRectangleString) {
698 struct TestData {
699 const char* input;
700 int max_rows;
701 int max_cols;
702 bool result;
703 const char* output;
704 } cases[] = {
705 { "", 0, 0, false, "" },
706 { "", 1, 1, false, "" },
707 { "Hi, my name is\nTom", 0, 0, true, "..." },
708 { "Hi, my name is\nTom", 1, 0, true, "\n..." },
709 { "Hi, my name is\nTom", 0, 1, true, "..." },
710 { "Hi, my name is\nTom", 1, 1, true, "H\n..." },
711 { "Hi, my name is\nTom", 2, 1, true, "H\ni\n..." },
712 { "Hi, my name is\nTom", 3, 1, true, "H\ni\n,\n..." },
713 { "Hi, my name is\nTom", 4, 1, true, "H\ni\n,\n \n..." },
714 { "Hi, my name is\nTom", 5, 1, true, "H\ni\n,\n \nm\n..." },
715 { "Hi, my name is\nTom", 0, 2, true, "..." },
716 { "Hi, my name is\nTom", 1, 2, true, "Hi\n..." },
717 { "Hi, my name is\nTom", 2, 2, true, "Hi\n, \n..." },
718 { "Hi, my name is\nTom", 3, 2, true, "Hi\n, \nmy\n..." },
719 { "Hi, my name is\nTom", 4, 2, true, "Hi\n, \nmy\n n\n..." },
720 { "Hi, my name is\nTom", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
721 { "Hi, my name is\nTom", 0, 3, true, "..." },
722 { "Hi, my name is\nTom", 1, 3, true, "Hi,\n..." },
723 { "Hi, my name is\nTom", 2, 3, true, "Hi,\n my\n..." },
724 { "Hi, my name is\nTom", 3, 3, true, "Hi,\n my\n na\n..." },
725 { "Hi, my name is\nTom", 4, 3, true, "Hi,\n my\n na\nme \n..." },
726 { "Hi, my name is\nTom", 5, 3, true, "Hi,\n my\n na\nme \nis\n..." },
727 { "Hi, my name is\nTom", 1, 4, true, "Hi, \n..." },
728 { "Hi, my name is\nTom", 2, 4, true, "Hi, \nmy n\n..." },
729 { "Hi, my name is\nTom", 3, 4, true, "Hi, \nmy n\name \n..." },
730 { "Hi, my name is\nTom", 4, 4, true, "Hi, \nmy n\name \nis\n..." },
731 { "Hi, my name is\nTom", 5, 4, false, "Hi, \nmy n\name \nis\nTom" },
732 { "Hi, my name is\nTom", 1, 5, true, "Hi, \n..." },
733 { "Hi, my name is\nTom", 2, 5, true, "Hi, \nmy na\n..." },
734 { "Hi, my name is\nTom", 3, 5, true, "Hi, \nmy na\nme \n..." },
735 { "Hi, my name is\nTom", 4, 5, true, "Hi, \nmy na\nme \nis\n..." },
736 { "Hi, my name is\nTom", 5, 5, false, "Hi, \nmy na\nme \nis\nTom" },
737 { "Hi, my name is\nTom", 1, 6, true, "Hi, \n..." },
738 { "Hi, my name is\nTom", 2, 6, true, "Hi, \nmy \n..." },
739 { "Hi, my name is\nTom", 3, 6, true, "Hi, \nmy \nname \n..." },
740 { "Hi, my name is\nTom", 4, 6, true, "Hi, \nmy \nname \nis\n..." },
741 { "Hi, my name is\nTom", 5, 6, false, "Hi, \nmy \nname \nis\nTom" },
742 { "Hi, my name is\nTom", 1, 7, true, "Hi, \n..." },
743 { "Hi, my name is\nTom", 2, 7, true, "Hi, \nmy \n..." },
744 { "Hi, my name is\nTom", 3, 7, true, "Hi, \nmy \nname \n..." },
745 { "Hi, my name is\nTom", 4, 7, true, "Hi, \nmy \nname \nis\n..." },
746 { "Hi, my name is\nTom", 5, 7, false, "Hi, \nmy \nname \nis\nTom" },
747 { "Hi, my name is\nTom", 1, 8, true, "Hi, my \n..." },
748 { "Hi, my name is\nTom", 2, 8, true, "Hi, my \nname \n..." },
749 { "Hi, my name is\nTom", 3, 8, true, "Hi, my \nname \nis\n..." },
750 { "Hi, my name is\nTom", 4, 8, false, "Hi, my \nname \nis\nTom" },
751 { "Hi, my name is\nTom", 1, 9, true, "Hi, my \n..." },
752 { "Hi, my name is\nTom", 2, 9, true, "Hi, my \nname is\n..." },
753 { "Hi, my name is\nTom", 3, 9, false, "Hi, my \nname is\nTom" },
754 { "Hi, my name is\nTom", 1, 10, true, "Hi, my \n..." },
755 { "Hi, my name is\nTom", 2, 10, true, "Hi, my \nname is\n..." },
756 { "Hi, my name is\nTom", 3, 10, false, "Hi, my \nname is\nTom" },
757 { "Hi, my name is\nTom", 1, 11, true, "Hi, my \n..." },
758 { "Hi, my name is\nTom", 2, 11, true, "Hi, my \nname is\n..." },
759 { "Hi, my name is\nTom", 3, 11, false, "Hi, my \nname is\nTom" },
760 { "Hi, my name is\nTom", 1, 12, true, "Hi, my \n..." },
761 { "Hi, my name is\nTom", 2, 12, true, "Hi, my \nname is\n..." },
762 { "Hi, my name is\nTom", 3, 12, false, "Hi, my \nname is\nTom" },
763 { "Hi, my name is\nTom", 1, 13, true, "Hi, my name \n..." },
764 { "Hi, my name is\nTom", 2, 13, true, "Hi, my name \nis\n..." },
765 { "Hi, my name is\nTom", 3, 13, false, "Hi, my name \nis\nTom" },
766 { "Hi, my name is\nTom", 1, 20, true, "Hi, my name is\n..." },
767 { "Hi, my name is\nTom", 2, 20, false, "Hi, my name is\nTom" },
768 { "Hi, my name is Tom", 1, 40, false, "Hi, my name is Tom" },
769 };
770 base::string16 output;
771 for (size_t i = 0; i < arraysize(cases); ++i) {
772 EXPECT_EQ(cases[i].result,
773 ElideRectangleString(UTF8ToUTF16(cases[i].input),
774 cases[i].max_rows, cases[i].max_cols,
775 true, &output));
776 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
777 }
778 }
779
780 TEST(TextEliderTest, ElideRectangleStringNotStrict) {
781 struct TestData {
782 const char* input;
783 int max_rows;
784 int max_cols;
785 bool result;
786 const char* output;
787 } cases[] = {
788 { "", 0, 0, false, "" },
789 { "", 1, 1, false, "" },
790 { "Hi, my name_is\nDick", 0, 0, true, "..." },
791 { "Hi, my name_is\nDick", 1, 0, true, "\n..." },
792 { "Hi, my name_is\nDick", 0, 1, true, "..." },
793 { "Hi, my name_is\nDick", 1, 1, true, "H\n..." },
794 { "Hi, my name_is\nDick", 2, 1, true, "H\ni\n..." },
795 { "Hi, my name_is\nDick", 3, 1, true, "H\ni\n,\n..." },
796 { "Hi, my name_is\nDick", 4, 1, true, "H\ni\n,\n \n..." },
797 { "Hi, my name_is\nDick", 5, 1, true, "H\ni\n,\n \nm\n..." },
798 { "Hi, my name_is\nDick", 0, 2, true, "..." },
799 { "Hi, my name_is\nDick", 1, 2, true, "Hi\n..." },
800 { "Hi, my name_is\nDick", 2, 2, true, "Hi\n, \n..." },
801 { "Hi, my name_is\nDick", 3, 2, true, "Hi\n, \nmy\n..." },
802 { "Hi, my name_is\nDick", 4, 2, true, "Hi\n, \nmy\n n\n..." },
803 { "Hi, my name_is\nDick", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
804 { "Hi, my name_is\nDick", 0, 3, true, "..." },
805 { "Hi, my name_is\nDick", 1, 3, true, "Hi,\n..." },
806 { "Hi, my name_is\nDick", 2, 3, true, "Hi,\n my\n..." },
807 { "Hi, my name_is\nDick", 3, 3, true, "Hi,\n my\n na\n..." },
808 { "Hi, my name_is\nDick", 4, 3, true, "Hi,\n my\n na\nme_\n..." },
809 { "Hi, my name_is\nDick", 5, 3, true, "Hi,\n my\n na\nme_\nis\n..." },
810 { "Hi, my name_is\nDick", 1, 4, true, "Hi, ..." },
811 { "Hi, my name_is\nDick", 2, 4, true, "Hi, my n\n..." },
812 { "Hi, my name_is\nDick", 3, 4, true, "Hi, my n\name_\n..." },
813 { "Hi, my name_is\nDick", 4, 4, true, "Hi, my n\name_\nis\n..." },
814 { "Hi, my name_is\nDick", 5, 4, false, "Hi, my n\name_\nis\nDick" },
815 { "Hi, my name_is\nDick", 1, 5, true, "Hi, ..." },
816 { "Hi, my name_is\nDick", 2, 5, true, "Hi, my na\n..." },
817 { "Hi, my name_is\nDick", 3, 5, true, "Hi, my na\nme_is\n..." },
818 { "Hi, my name_is\nDick", 4, 5, true, "Hi, my na\nme_is\n\n..." },
819 { "Hi, my name_is\nDick", 5, 5, false, "Hi, my na\nme_is\n\nDick" },
820 { "Hi, my name_is\nDick", 1, 6, true, "Hi, ..." },
821 { "Hi, my name_is\nDick", 2, 6, true, "Hi, my nam\n..." },
822 { "Hi, my name_is\nDick", 3, 6, true, "Hi, my nam\ne_is\n..." },
823 { "Hi, my name_is\nDick", 4, 6, false, "Hi, my nam\ne_is\nDick" },
824 { "Hi, my name_is\nDick", 5, 6, false, "Hi, my nam\ne_is\nDick" },
825 { "Hi, my name_is\nDick", 1, 7, true, "Hi, ..." },
826 { "Hi, my name_is\nDick", 2, 7, true, "Hi, my name\n..." },
827 { "Hi, my name_is\nDick", 3, 7, true, "Hi, my name\n_is\n..." },
828 { "Hi, my name_is\nDick", 4, 7, false, "Hi, my name\n_is\nDick" },
829 { "Hi, my name_is\nDick", 5, 7, false, "Hi, my name\n_is\nDick" },
830 { "Hi, my name_is\nDick", 1, 8, true, "Hi, my n\n..." },
831 { "Hi, my name_is\nDick", 2, 8, true, "Hi, my n\name_is\n..." },
832 { "Hi, my name_is\nDick", 3, 8, false, "Hi, my n\name_is\nDick" },
833 { "Hi, my name_is\nDick", 1, 9, true, "Hi, my ..." },
834 { "Hi, my name_is\nDick", 2, 9, true, "Hi, my name_is\n..." },
835 { "Hi, my name_is\nDick", 3, 9, false, "Hi, my name_is\nDick" },
836 { "Hi, my name_is\nDick", 1, 10, true, "Hi, my ..." },
837 { "Hi, my name_is\nDick", 2, 10, true, "Hi, my name_is\n..." },
838 { "Hi, my name_is\nDick", 3, 10, false, "Hi, my name_is\nDick" },
839 { "Hi, my name_is\nDick", 1, 11, true, "Hi, my ..." },
840 { "Hi, my name_is\nDick", 2, 11, true, "Hi, my name_is\n..." },
841 { "Hi, my name_is\nDick", 3, 11, false, "Hi, my name_is\nDick" },
842 { "Hi, my name_is\nDick", 1, 12, true, "Hi, my ..." },
843 { "Hi, my name_is\nDick", 2, 12, true, "Hi, my name_is\n..." },
844 { "Hi, my name_is\nDick", 3, 12, false, "Hi, my name_is\nDick" },
845 { "Hi, my name_is\nDick", 1, 13, true, "Hi, my ..." },
846 { "Hi, my name_is\nDick", 2, 13, true, "Hi, my name_is\n..." },
847 { "Hi, my name_is\nDick", 3, 13, false, "Hi, my name_is\nDick" },
848 { "Hi, my name_is\nDick", 1, 20, true, "Hi, my name_is\n..." },
849 { "Hi, my name_is\nDick", 2, 20, false, "Hi, my name_is\nDick" },
850 { "Hi, my name_is Dick", 1, 40, false, "Hi, my name_is Dick" },
851 };
852 base::string16 output;
853 for (size_t i = 0; i < arraysize(cases); ++i) {
854 EXPECT_EQ(cases[i].result,
855 ElideRectangleString(UTF8ToUTF16(cases[i].input),
856 cases[i].max_rows, cases[i].max_cols,
857 false, &output));
858 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
859 }
860 }
861
862 TEST(TextEliderTest, ElideRectangleWide16) {
863 // Two greek words separated by space.
864 const base::string16 str(WideToUTF16(
865 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
866 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2"));
867 const base::string16 out1(WideToUTF16(
868 L"\x03a0\x03b1\x03b3\x03ba\n"
869 L"\x03cc\x03c3\x03bc\x03b9\n"
870 L"..."));
871 const base::string16 out2(WideToUTF16(
872 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9\x03bf\x03c2\x0020\n"
873 L"\x0399\x03c3\x03c4\x03cc\x03c2"));
874 base::string16 output;
875 EXPECT_TRUE(ElideRectangleString(str, 2, 4, true, &output));
876 EXPECT_EQ(out1, output);
877 EXPECT_FALSE(ElideRectangleString(str, 2, 12, true, &output));
878 EXPECT_EQ(out2, output);
879 }
880
881 TEST(TextEliderTest, ElideRectangleWide32) {
882 // Four U+1D49C MATHEMATICAL SCRIPT CAPITAL A followed by space "aaaaa".
883 const base::string16 str(UTF8ToUTF16(
884 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C"
885 " aaaaa"));
886 const base::string16 out(UTF8ToUTF16(
887 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\n"
888 "\xF0\x9D\x92\x9C \naaa\n..."));
889 base::string16 output;
890 EXPECT_TRUE(ElideRectangleString(str, 3, 3, true, &output));
891 EXPECT_EQ(out, output);
892 }
893
894 TEST(TextEliderTest, TruncateString) {
895 base::string16 string = ASCIIToUTF16("foooooey bxxxar baz");
896
897 // Tests that apply to both break behaviors:
898
899 // Make sure it doesn't modify the string if length > string length.
900 EXPECT_EQ(string, TruncateString(string, 100, WORD_BREAK));
901 EXPECT_EQ(string, TruncateString(string, 100, CHARACTER_BREAK));
902
903 // Test no characters.
904 EXPECT_EQ(L"", UTF16ToWide(TruncateString(string, 0, WORD_BREAK)));
905 EXPECT_EQ(L"", UTF16ToWide(TruncateString(string, 0, CHARACTER_BREAK)));
906
907 // Test 1 character.
908 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(string, 1, WORD_BREAK)));
909 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(string, 1, CHARACTER_BREAK)));
910
911 // Test completely truncates string if break is on initial whitespace.
912 EXPECT_EQ(L"\x2026",
913 UTF16ToWide(TruncateString(ASCIIToUTF16(" "), 2, WORD_BREAK)));
914 EXPECT_EQ(L"\x2026",
915 UTF16ToWide(TruncateString(ASCIIToUTF16(" "), 2,
916 CHARACTER_BREAK)));
917
918 // Break-only-at-word-boundaries tests:
919
920 // Test adds ... at right spot when there is enough room to break at a
921 // word boundary.
922 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 14,
923 WORD_BREAK)));
924
925 // Test adds ... at right spot when there is not enough space in first word.
926 EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(string, 2, WORD_BREAK)));
927
928 // Test adds ... at right spot when there is not enough room to break at a
929 // word boundary.
930 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 11,
931 WORD_BREAK)));
932
933 // Break-anywhere tests:
934
935 // Test adds ... at right spot within a word.
936 EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(string, 2,
937 CHARACTER_BREAK)));
938
939 // Test removes trailing whitespace if break falls between words.
940 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 12,
941 CHARACTER_BREAK)));
942 }
943
944 } // namespace gfx