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GoogleURLTrackerInfoBarDelegate: Initialize uninitialized member in constructor.
[chromium-blink-merge.git] / ui / gfx / text_elider_unittest.cc
blob2696fb80a6d3514248b40d92117f92d50cbdbba6
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@g.c", "g@g.c"},
71 {"g@g.c", kEllipsisStr},
72 {"ga@co.ca", "ga@c" + kEllipsisStr + "a"},
73 {"short@small.com", "s" + kEllipsisStr + "@s" + kEllipsisStr},
74 {"short@small.com", "s" + kEllipsisStr + "@small.com"},
75 {"short@longbutlotsofspace.com", "short@longbutlotsofspace.com"},
76 {"short@longbutnotverymuchspace.com",
77 "short@long" + kEllipsisStr + ".com"},
78 {"la_short@longbutverytightspace.ca",
79 "la" + kEllipsisStr + "@l" + kEllipsisStr + "a"},
80 {"longusername@gmail.com", "long" + kEllipsisStr + "@gmail.com"},
81 {"elidetothemax@justfits.com", "e" + kEllipsisStr + "@justfits.com"},
82 {"thatom_somelongemail@thatdoesntfit.com",
83 "thatom" + kEllipsisStr + "@tha" + kEllipsisStr + "om"},
84 {"namefits@butthedomaindoesnt.com",
85 "namefits@butthedo" + kEllipsisStr + "snt.com"},
86 {"widthtootight@nospace.com", kEllipsisStr},
87 {"nospaceforusername@l", kEllipsisStr},
88 {"little@littlespace.com", "l" + kEllipsisStr + "@l" + kEllipsisStr},
89 {"l@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 ElideEmail(
110 UTF8ToUTF16(testcases[i].input),
111 font_list,
112 GetStringWidthF(expected_output, font_list)));
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, ElideEmail(test_email, font_list, test_width));
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_AT_END);
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_AT_END);
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_AT_BEGINNING);
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 size_t index = text.find_first_of(first_char);
306 while (index != base::string16::npos) {
307 EXPECT_LT(index, text.length() - 1);
308 EXPECT_EQ(second_char, text[index + 1]);
309 index = text.find_first_of(first_char, index + 1);
310 }
311 index = text.find_first_of(second_char);
312 while (index != base::string16::npos) {
313 EXPECT_GT(index, 0U);
314 EXPECT_EQ(first_char, text[index - 1]);
315 index = text.find_first_of(second_char, index + 1);
316 }
317 }
318
319 // TODO(338784): Enable this on android.
320 #if defined(OS_ANDROID)
321 #define MAYBE_ElideTextSurrogatePairs DISABLED_ElideTextSurrogatePairs
322 #else
323 #define MAYBE_ElideTextSurrogatePairs ElideTextSurrogatePairs
324 #endif
325 TEST(TextEliderTest, MAYBE_ElideTextSurrogatePairs) {
326 const FontList font_list;
327 // The below is 'MUSICAL SYMBOL G CLEF', which is represented in UTF-16 as
328 // two characters forming a surrogate pair 0x0001D11E.
329 const std::string kSurrogate = "\xF0\x9D\x84\x9E";
330 const base::string16 kTestString =
331 UTF8ToUTF16(kSurrogate + "ab" + kSurrogate + kSurrogate + "cd");
332 const float kTestStringWidth = GetStringWidthF(kTestString, font_list);
333 const base::char16 kSurrogateFirstChar = kTestString[0];
334 const base::char16 kSurrogateSecondChar = kTestString[1];
335 base::string16 result;
336
337 // Elide |kTextString| to all possible widths and check that no instance of
338 // |kSurrogate| was split in two.
339 for (float width = 0; width <= kTestStringWidth; width++) {
340 result = ElideText(kTestString, font_list, width, TRUNCATE_AT_END);
341 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
342
343 result = ElideText(kTestString, font_list, width, ELIDE_AT_END);
344 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
345
346 result = ElideText(kTestString, font_list, width, ELIDE_IN_MIDDLE);
347 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
348
349 result = ElideText(kTestString, font_list, width, ELIDE_AT_BEGINNING);
350 CheckSurrogatePairs(result, kSurrogateFirstChar, kSurrogateSecondChar);
351 }
352 }
353
354 // TODO(338784): Enable this on android.
355 #if defined(OS_ANDROID)
356 #define MAYBE_ElideTextLongStrings DISABLED_ElideTextLongStrings
357 #else
358 #define MAYBE_ElideTextLongStrings ElideTextLongStrings
359 #endif
360 TEST(TextEliderTest, MAYBE_ElideTextLongStrings) {
361 const base::string16 kEllipsisStr = UTF8ToUTF16(kEllipsis);
362 base::string16 data_scheme(UTF8ToUTF16("data:text/plain,"));
363 size_t data_scheme_length = data_scheme.length();
364
365 base::string16 ten_a(10, 'a');
366 base::string16 hundred_a(100, 'a');
367 base::string16 thousand_a(1000, 'a');
368 base::string16 ten_thousand_a(10000, 'a');
369 base::string16 hundred_thousand_a(100000, 'a');
370 base::string16 million_a(1000000, 'a');
371
372 // TODO(gbillock): Improve these tests by adding more string diversity and
373 // doing string compares instead of length compares. See bug 338836.
374
375 size_t number_of_as = 156;
376 base::string16 long_string_end(
377 data_scheme + base::string16(number_of_as, 'a') + kEllipsisStr);
378 UTF16Testcase testcases_end[] = {
379 { data_scheme + ten_a, data_scheme + ten_a },
380 { data_scheme + hundred_a, data_scheme + hundred_a },
381 { data_scheme + thousand_a, long_string_end },
382 { data_scheme + ten_thousand_a, long_string_end },
383 { data_scheme + hundred_thousand_a, long_string_end },
384 { data_scheme + million_a, long_string_end },
385 };
386
387 const FontList font_list;
388 float ellipsis_width = GetStringWidthF(kEllipsisStr, font_list);
389 for (size_t i = 0; i < arraysize(testcases_end); ++i) {
390 // Compare sizes rather than actual contents because if the test fails,
391 // output is rather long.
392 EXPECT_EQ(testcases_end[i].output.size(),
393 ElideText(
394 testcases_end[i].input,
395 font_list,
396 GetStringWidthF(testcases_end[i].output, font_list),
397 ELIDE_AT_END).size());
398 EXPECT_EQ(kEllipsisStr,
399 ElideText(testcases_end[i].input, font_list, ellipsis_width,
400 ELIDE_AT_END));
401 }
402
403 size_t number_of_trailing_as = (data_scheme_length + number_of_as) / 2;
404 base::string16 long_string_middle(data_scheme +
405 base::string16(number_of_as - number_of_trailing_as, 'a') + kEllipsisStr +
406 base::string16(number_of_trailing_as, 'a'));
407 UTF16Testcase testcases_middle[] = {
408 { data_scheme + ten_a, data_scheme + ten_a },
409 { data_scheme + hundred_a, data_scheme + hundred_a },
410 { data_scheme + thousand_a, long_string_middle },
411 { data_scheme + ten_thousand_a, long_string_middle },
412 { data_scheme + hundred_thousand_a, long_string_middle },
413 { data_scheme + million_a, long_string_middle },
414 };
415
416 for (size_t i = 0; i < arraysize(testcases_middle); ++i) {
417 // Compare sizes rather than actual contents because if the test fails,
418 // output is rather long.
419 EXPECT_EQ(testcases_middle[i].output.size(),
420 ElideText(
421 testcases_middle[i].input,
422 font_list,
423 GetStringWidthF(testcases_middle[i].output, font_list),
424 ELIDE_IN_MIDDLE).size());
425 EXPECT_EQ(kEllipsisStr,
426 ElideText(testcases_middle[i].input, font_list, ellipsis_width,
427 ELIDE_IN_MIDDLE));
428 }
429
430 base::string16 long_string_beginning(
431 kEllipsisStr + base::string16(number_of_as, 'a'));
432 UTF16Testcase testcases_beginning[] = {
433 { data_scheme + ten_a, data_scheme + ten_a },
434 { data_scheme + hundred_a, data_scheme + hundred_a },
435 { data_scheme + thousand_a, long_string_beginning },
436 { data_scheme + ten_thousand_a, long_string_beginning },
437 { data_scheme + hundred_thousand_a, long_string_beginning },
438 { data_scheme + million_a, long_string_beginning },
439 };
440 for (size_t i = 0; i < arraysize(testcases_beginning); ++i) {
441 EXPECT_EQ(testcases_beginning[i].output.size(),
442 ElideText(
443 testcases_beginning[i].input, font_list,
444 GetStringWidthF(testcases_beginning[i].output, font_list),
445 ELIDE_AT_BEGINNING).size());
446 EXPECT_EQ(kEllipsisStr,
447 ElideText(testcases_beginning[i].input, font_list, ellipsis_width,
448 ELIDE_AT_BEGINNING));
449 }
450 }
451
452 TEST(TextEliderTest, ElideString) {
453 struct TestData {
454 const char* input;
455 int max_len;
456 bool result;
457 const char* output;
458 } cases[] = {
459 { "Hello", 0, true, "" },
460 { "", 0, false, "" },
461 { "Hello, my name is Tom", 1, true, "H" },
462 { "Hello, my name is Tom", 2, true, "He" },
463 { "Hello, my name is Tom", 3, true, "H.m" },
464 { "Hello, my name is Tom", 4, true, "H..m" },
465 { "Hello, my name is Tom", 5, true, "H...m" },
466 { "Hello, my name is Tom", 6, true, "He...m" },
467 { "Hello, my name is Tom", 7, true, "He...om" },
468 { "Hello, my name is Tom", 10, true, "Hell...Tom" },
469 { "Hello, my name is Tom", 100, false, "Hello, my name is Tom" }
470 };
471 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
472 base::string16 output;
473 EXPECT_EQ(cases[i].result,
474 ElideString(UTF8ToUTF16(cases[i].input),
475 cases[i].max_len, &output));
476 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
477 }
478 }
479
480 // TODO(338784): Enable this on android.
481 #if defined(OS_ANDROID)
482 #define MAYBE_ElideRectangleText DISABLED_ElideRectangleText
483 #else
484 #define MAYBE_ElideRectangleText ElideRectangleText
485 #endif
486 TEST(TextEliderTest, MAYBE_ElideRectangleText) {
487 const FontList font_list;
488 const int line_height = font_list.GetHeight();
489 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
490
491 struct TestData {
492 const char* input;
493 float available_pixel_width;
494 int available_pixel_height;
495 bool truncated_y;
496 const char* output;
497 } cases[] = {
498 { "", 0, 0, false, NULL },
499 { "", 1, 1, false, NULL },
500 { "Test", test_width, 0, true, NULL },
501 { "Test", test_width, 1, false, "Test" },
502 { "Test", test_width, line_height, false, "Test" },
503 { "Test Test", test_width, line_height, true, "Test" },
504 { "Test Test", test_width, line_height + 1, false, "Test|Test" },
505 { "Test Test", test_width, line_height * 2, false, "Test|Test" },
506 { "Test Test", test_width, line_height * 3, false, "Test|Test" },
507 { "Test Test", test_width * 2, line_height * 2, false, "Test|Test" },
508 { "Test Test", test_width * 3, line_height, false, "Test Test" },
509 { "Test\nTest", test_width * 3, line_height * 2, false, "Test|Test" },
510 { "Te\nst Te", test_width, line_height * 3, false, "Te|st|Te" },
511 { "\nTest", test_width, line_height * 2, false, "|Test" },
512 { "\nTest", test_width, line_height, true, "" },
513 { "\n\nTest", test_width, line_height * 3, false, "||Test" },
514 { "\n\nTest", test_width, line_height * 2, true, "|" },
515 { "Test\n", 2 * test_width, line_height * 5, false, "Test|" },
516 { "Test\n\n", 2 * test_width, line_height * 5, false, "Test||" },
517 { "Test\n\n\n", 2 * test_width, line_height * 5, false, "Test|||" },
518 { "Test\nTest\n\n", 2 * test_width, line_height * 5, false, "Test|Test||" },
519 { "Test\n\nTest\n", 2 * test_width, line_height * 5, false, "Test||Test|" },
520 { "Test\n\n\nTest", 2 * test_width, line_height * 5, false, "Test|||Test" },
521 { "Te ", test_width, line_height, false, "Te" },
522 { "Te Te Test", test_width, 3 * line_height, false, "Te|Te|Test" },
523 };
524
525 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
526 std::vector<base::string16> lines;
527 EXPECT_EQ(cases[i].truncated_y ? INSUFFICIENT_SPACE_VERTICAL : 0,
528 ElideRectangleText(UTF8ToUTF16(cases[i].input),
529 font_list,
530 cases[i].available_pixel_width,
531 cases[i].available_pixel_height,
532 TRUNCATE_LONG_WORDS,
533 &lines));
534 if (cases[i].output) {
535 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
536 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
537 } else {
538 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
539 }
540 }
541 }
542
543 // TODO(338784): Enable this on android.
544 #if defined(OS_ANDROID)
545 #define MAYBE_ElideRectangleTextPunctuation \
546 DISABLED_ElideRectangleTextPunctuation
547 #else
548 #define MAYBE_ElideRectangleTextPunctuation ElideRectangleTextPunctuation
549 #endif
550 TEST(TextEliderTest, MAYBE_ElideRectangleTextPunctuation) {
551 const FontList font_list;
552 const int line_height = font_list.GetHeight();
553 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
554 const float test_t_width = GetStringWidthF(ASCIIToUTF16("Test T"), font_list);
555
556 struct TestData {
557 const char* input;
558 float available_pixel_width;
559 int available_pixel_height;
560 bool wrap_words;
561 bool truncated_x;
562 const char* output;
563 } cases[] = {
564 { "Test T.", test_t_width, line_height * 2, false, false, "Test|T." },
565 { "Test T ?", test_t_width, line_height * 2, false, false, "Test|T ?" },
566 { "Test. Test", test_width, line_height * 3, false, true, "Test|Test" },
567 { "Test. Test", test_width, line_height * 3, true, false, "Test|.|Test" },
568 };
569
570 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
571 std::vector<base::string16> lines;
572 const WordWrapBehavior wrap_behavior =
573 (cases[i].wrap_words ? WRAP_LONG_WORDS : TRUNCATE_LONG_WORDS);
574 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
575 ElideRectangleText(UTF8ToUTF16(cases[i].input),
576 font_list,
577 cases[i].available_pixel_width,
578 cases[i].available_pixel_height,
579 wrap_behavior,
580 &lines));
581 if (cases[i].output) {
582 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
583 EXPECT_EQ(cases[i].output, result) << "Case " << i << " failed!";
584 } else {
585 EXPECT_TRUE(lines.empty()) << "Case " << i << " failed!";
586 }
587 }
588 }
589
590 // TODO(338784): Enable this on android.
591 #if defined(OS_ANDROID)
592 #define MAYBE_ElideRectangleTextLongWords DISABLED_ElideRectangleTextLongWords
593 #else
594 #define MAYBE_ElideRectangleTextLongWords ElideRectangleTextLongWords
595 #endif
596 TEST(TextEliderTest, MAYBE_ElideRectangleTextLongWords) {
597 const FontList font_list;
598 const int kAvailableHeight = 1000;
599 const base::string16 kElidedTesting =
600 UTF8ToUTF16(std::string("Tes") + kEllipsis);
601 const float elided_width = GetStringWidthF(kElidedTesting, font_list);
602 const float test_width = GetStringWidthF(ASCIIToUTF16("Test"), font_list);
603
604 struct TestData {
605 const char* input;
606 float available_pixel_width;
607 WordWrapBehavior wrap_behavior;
608 bool truncated_x;
609 const char* output;
610 } cases[] = {
611 { "Testing", test_width, IGNORE_LONG_WORDS, false, "Testing" },
612 { "X Testing", test_width, IGNORE_LONG_WORDS, false, "X|Testing" },
613 { "Test Testing", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
614 { "Test\nTesting", test_width, IGNORE_LONG_WORDS, false, "Test|Testing" },
615 { "Test Tests ", test_width, IGNORE_LONG_WORDS, false, "Test|Tests" },
616 { "Test Tests T", test_width, IGNORE_LONG_WORDS, false, "Test|Tests|T" },
617
618 { "Testing", elided_width, ELIDE_LONG_WORDS, true, "Tes..." },
619 { "X Testing", elided_width, ELIDE_LONG_WORDS, true, "X|Tes..." },
620 { "Test Testing", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
621 { "Test\nTesting", elided_width, ELIDE_LONG_WORDS, true, "Test|Tes..." },
622
623 { "Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test" },
624 { "X Testing", test_width, TRUNCATE_LONG_WORDS, true, "X|Test" },
625 { "Test Testing", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
626 { "Test\nTesting", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
627 { "Test Tests ", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test" },
628 { "Test Tests T", test_width, TRUNCATE_LONG_WORDS, true, "Test|Test|T" },
629
630 { "Testing", test_width, WRAP_LONG_WORDS, false, "Test|ing" },
631 { "X Testing", test_width, WRAP_LONG_WORDS, false, "X|Test|ing" },
632 { "Test Testing", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
633 { "Test\nTesting", test_width, WRAP_LONG_WORDS, false, "Test|Test|ing" },
634 { "Test Tests ", test_width, WRAP_LONG_WORDS, false, "Test|Test|s" },
635 { "Test Tests T", test_width, WRAP_LONG_WORDS, false, "Test|Test|s T" },
636 { "TestTestTest", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test" },
637 { "TestTestTestT", test_width, WRAP_LONG_WORDS, false, "Test|Test|Test|T" },
638 };
639
640 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
641 std::vector<base::string16> lines;
642 EXPECT_EQ(cases[i].truncated_x ? INSUFFICIENT_SPACE_HORIZONTAL : 0,
643 ElideRectangleText(UTF8ToUTF16(cases[i].input),
644 font_list,
645 cases[i].available_pixel_width,
646 kAvailableHeight,
647 cases[i].wrap_behavior,
648 &lines));
649 std::string expected_output(cases[i].output);
650 ReplaceSubstringsAfterOffset(&expected_output, 0, "...", kEllipsis);
651 const std::string result = UTF16ToUTF8(JoinString(lines, '|'));
652 EXPECT_EQ(expected_output, result) << "Case " << i << " failed!";
653 }
654 }
655
656 // This test is to make sure that the width of each wrapped line does not
657 // exceed the available width. On some platform like Mac, this test used to
658 // fail because the truncated integer width is returned for the string
659 // and the accumulation of the truncated values causes the elide function
660 // to wrap incorrectly.
661 // TODO(338784): Enable this on android.
662 #if defined(OS_ANDROID)
663 #define MAYBE_ElideRectangleTextCheckLineWidth \
664 DISABLED_ElideRectangleTextCheckLineWidth
665 #else
666 #define MAYBE_ElideRectangleTextCheckLineWidth ElideRectangleTextCheckLineWidth
667 #endif
668 TEST(TextEliderTest, MAYBE_ElideRectangleTextCheckLineWidth) {
669 FontList font_list;
670 #if defined(OS_MACOSX) && !defined(OS_IOS)
671 // Use a specific font to expose the line width exceeding problem.
672 font_list = FontList(Font("LucidaGrande", 12));
673 #endif
674 const float kAvailableWidth = 235;
675 const int kAvailableHeight = 1000;
676 const char text[] = "that Russian place we used to go to after fencing";
677 std::vector<base::string16> lines;
678 EXPECT_EQ(0, ElideRectangleText(UTF8ToUTF16(text),
679 font_list,
680 kAvailableWidth,
681 kAvailableHeight,
682 WRAP_LONG_WORDS,
683 &lines));
684 ASSERT_EQ(2u, lines.size());
685 EXPECT_LE(GetStringWidthF(lines[0], font_list), kAvailableWidth);
686 EXPECT_LE(GetStringWidthF(lines[1], font_list), kAvailableWidth);
687 }
688
689 TEST(TextEliderTest, ElideRectangleString) {
690 struct TestData {
691 const char* input;
692 int max_rows;
693 int max_cols;
694 bool result;
695 const char* output;
696 } cases[] = {
697 { "", 0, 0, false, "" },
698 { "", 1, 1, false, "" },
699 { "Hi, my name is\nTom", 0, 0, true, "..." },
700 { "Hi, my name is\nTom", 1, 0, true, "\n..." },
701 { "Hi, my name is\nTom", 0, 1, true, "..." },
702 { "Hi, my name is\nTom", 1, 1, true, "H\n..." },
703 { "Hi, my name is\nTom", 2, 1, true, "H\ni\n..." },
704 { "Hi, my name is\nTom", 3, 1, true, "H\ni\n,\n..." },
705 { "Hi, my name is\nTom", 4, 1, true, "H\ni\n,\n \n..." },
706 { "Hi, my name is\nTom", 5, 1, true, "H\ni\n,\n \nm\n..." },
707 { "Hi, my name is\nTom", 0, 2, true, "..." },
708 { "Hi, my name is\nTom", 1, 2, true, "Hi\n..." },
709 { "Hi, my name is\nTom", 2, 2, true, "Hi\n, \n..." },
710 { "Hi, my name is\nTom", 3, 2, true, "Hi\n, \nmy\n..." },
711 { "Hi, my name is\nTom", 4, 2, true, "Hi\n, \nmy\n n\n..." },
712 { "Hi, my name is\nTom", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
713 { "Hi, my name is\nTom", 0, 3, true, "..." },
714 { "Hi, my name is\nTom", 1, 3, true, "Hi,\n..." },
715 { "Hi, my name is\nTom", 2, 3, true, "Hi,\n my\n..." },
716 { "Hi, my name is\nTom", 3, 3, true, "Hi,\n my\n na\n..." },
717 { "Hi, my name is\nTom", 4, 3, true, "Hi,\n my\n na\nme \n..." },
718 { "Hi, my name is\nTom", 5, 3, true, "Hi,\n my\n na\nme \nis\n..." },
719 { "Hi, my name is\nTom", 1, 4, true, "Hi, \n..." },
720 { "Hi, my name is\nTom", 2, 4, true, "Hi, \nmy n\n..." },
721 { "Hi, my name is\nTom", 3, 4, true, "Hi, \nmy n\name \n..." },
722 { "Hi, my name is\nTom", 4, 4, true, "Hi, \nmy n\name \nis\n..." },
723 { "Hi, my name is\nTom", 5, 4, false, "Hi, \nmy n\name \nis\nTom" },
724 { "Hi, my name is\nTom", 1, 5, true, "Hi, \n..." },
725 { "Hi, my name is\nTom", 2, 5, true, "Hi, \nmy na\n..." },
726 { "Hi, my name is\nTom", 3, 5, true, "Hi, \nmy na\nme \n..." },
727 { "Hi, my name is\nTom", 4, 5, true, "Hi, \nmy na\nme \nis\n..." },
728 { "Hi, my name is\nTom", 5, 5, false, "Hi, \nmy na\nme \nis\nTom" },
729 { "Hi, my name is\nTom", 1, 6, true, "Hi, \n..." },
730 { "Hi, my name is\nTom", 2, 6, true, "Hi, \nmy \n..." },
731 { "Hi, my name is\nTom", 3, 6, true, "Hi, \nmy \nname \n..." },
732 { "Hi, my name is\nTom", 4, 6, true, "Hi, \nmy \nname \nis\n..." },
733 { "Hi, my name is\nTom", 5, 6, false, "Hi, \nmy \nname \nis\nTom" },
734 { "Hi, my name is\nTom", 1, 7, true, "Hi, \n..." },
735 { "Hi, my name is\nTom", 2, 7, true, "Hi, \nmy \n..." },
736 { "Hi, my name is\nTom", 3, 7, true, "Hi, \nmy \nname \n..." },
737 { "Hi, my name is\nTom", 4, 7, true, "Hi, \nmy \nname \nis\n..." },
738 { "Hi, my name is\nTom", 5, 7, false, "Hi, \nmy \nname \nis\nTom" },
739 { "Hi, my name is\nTom", 1, 8, true, "Hi, my \n..." },
740 { "Hi, my name is\nTom", 2, 8, true, "Hi, my \nname \n..." },
741 { "Hi, my name is\nTom", 3, 8, true, "Hi, my \nname \nis\n..." },
742 { "Hi, my name is\nTom", 4, 8, false, "Hi, my \nname \nis\nTom" },
743 { "Hi, my name is\nTom", 1, 9, true, "Hi, my \n..." },
744 { "Hi, my name is\nTom", 2, 9, true, "Hi, my \nname is\n..." },
745 { "Hi, my name is\nTom", 3, 9, false, "Hi, my \nname is\nTom" },
746 { "Hi, my name is\nTom", 1, 10, true, "Hi, my \n..." },
747 { "Hi, my name is\nTom", 2, 10, true, "Hi, my \nname is\n..." },
748 { "Hi, my name is\nTom", 3, 10, false, "Hi, my \nname is\nTom" },
749 { "Hi, my name is\nTom", 1, 11, true, "Hi, my \n..." },
750 { "Hi, my name is\nTom", 2, 11, true, "Hi, my \nname is\n..." },
751 { "Hi, my name is\nTom", 3, 11, false, "Hi, my \nname is\nTom" },
752 { "Hi, my name is\nTom", 1, 12, true, "Hi, my \n..." },
753 { "Hi, my name is\nTom", 2, 12, true, "Hi, my \nname is\n..." },
754 { "Hi, my name is\nTom", 3, 12, false, "Hi, my \nname is\nTom" },
755 { "Hi, my name is\nTom", 1, 13, true, "Hi, my name \n..." },
756 { "Hi, my name is\nTom", 2, 13, true, "Hi, my name \nis\n..." },
757 { "Hi, my name is\nTom", 3, 13, false, "Hi, my name \nis\nTom" },
758 { "Hi, my name is\nTom", 1, 20, true, "Hi, my name is\n..." },
759 { "Hi, my name is\nTom", 2, 20, false, "Hi, my name is\nTom" },
760 { "Hi, my name is Tom", 1, 40, false, "Hi, my name is Tom" },
761 };
762 base::string16 output;
763 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
764 EXPECT_EQ(cases[i].result,
765 ElideRectangleString(UTF8ToUTF16(cases[i].input),
766 cases[i].max_rows, cases[i].max_cols,
767 true, &output));
768 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
769 }
770 }
771
772 TEST(TextEliderTest, ElideRectangleStringNotStrict) {
773 struct TestData {
774 const char* input;
775 int max_rows;
776 int max_cols;
777 bool result;
778 const char* output;
779 } cases[] = {
780 { "", 0, 0, false, "" },
781 { "", 1, 1, false, "" },
782 { "Hi, my name_is\nDick", 0, 0, true, "..." },
783 { "Hi, my name_is\nDick", 1, 0, true, "\n..." },
784 { "Hi, my name_is\nDick", 0, 1, true, "..." },
785 { "Hi, my name_is\nDick", 1, 1, true, "H\n..." },
786 { "Hi, my name_is\nDick", 2, 1, true, "H\ni\n..." },
787 { "Hi, my name_is\nDick", 3, 1, true, "H\ni\n,\n..." },
788 { "Hi, my name_is\nDick", 4, 1, true, "H\ni\n,\n \n..." },
789 { "Hi, my name_is\nDick", 5, 1, true, "H\ni\n,\n \nm\n..." },
790 { "Hi, my name_is\nDick", 0, 2, true, "..." },
791 { "Hi, my name_is\nDick", 1, 2, true, "Hi\n..." },
792 { "Hi, my name_is\nDick", 2, 2, true, "Hi\n, \n..." },
793 { "Hi, my name_is\nDick", 3, 2, true, "Hi\n, \nmy\n..." },
794 { "Hi, my name_is\nDick", 4, 2, true, "Hi\n, \nmy\n n\n..." },
795 { "Hi, my name_is\nDick", 5, 2, true, "Hi\n, \nmy\n n\nam\n..." },
796 { "Hi, my name_is\nDick", 0, 3, true, "..." },
797 { "Hi, my name_is\nDick", 1, 3, true, "Hi,\n..." },
798 { "Hi, my name_is\nDick", 2, 3, true, "Hi,\n my\n..." },
799 { "Hi, my name_is\nDick", 3, 3, true, "Hi,\n my\n na\n..." },
800 { "Hi, my name_is\nDick", 4, 3, true, "Hi,\n my\n na\nme_\n..." },
801 { "Hi, my name_is\nDick", 5, 3, true, "Hi,\n my\n na\nme_\nis\n..." },
802 { "Hi, my name_is\nDick", 1, 4, true, "Hi, ..." },
803 { "Hi, my name_is\nDick", 2, 4, true, "Hi, my n\n..." },
804 { "Hi, my name_is\nDick", 3, 4, true, "Hi, my n\name_\n..." },
805 { "Hi, my name_is\nDick", 4, 4, true, "Hi, my n\name_\nis\n..." },
806 { "Hi, my name_is\nDick", 5, 4, false, "Hi, my n\name_\nis\nDick" },
807 { "Hi, my name_is\nDick", 1, 5, true, "Hi, ..." },
808 { "Hi, my name_is\nDick", 2, 5, true, "Hi, my na\n..." },
809 { "Hi, my name_is\nDick", 3, 5, true, "Hi, my na\nme_is\n..." },
810 { "Hi, my name_is\nDick", 4, 5, true, "Hi, my na\nme_is\n\n..." },
811 { "Hi, my name_is\nDick", 5, 5, false, "Hi, my na\nme_is\n\nDick" },
812 { "Hi, my name_is\nDick", 1, 6, true, "Hi, ..." },
813 { "Hi, my name_is\nDick", 2, 6, true, "Hi, my nam\n..." },
814 { "Hi, my name_is\nDick", 3, 6, true, "Hi, my nam\ne_is\n..." },
815 { "Hi, my name_is\nDick", 4, 6, false, "Hi, my nam\ne_is\nDick" },
816 { "Hi, my name_is\nDick", 5, 6, false, "Hi, my nam\ne_is\nDick" },
817 { "Hi, my name_is\nDick", 1, 7, true, "Hi, ..." },
818 { "Hi, my name_is\nDick", 2, 7, true, "Hi, my name\n..." },
819 { "Hi, my name_is\nDick", 3, 7, true, "Hi, my name\n_is\n..." },
820 { "Hi, my name_is\nDick", 4, 7, false, "Hi, my name\n_is\nDick" },
821 { "Hi, my name_is\nDick", 5, 7, false, "Hi, my name\n_is\nDick" },
822 { "Hi, my name_is\nDick", 1, 8, true, "Hi, my n\n..." },
823 { "Hi, my name_is\nDick", 2, 8, true, "Hi, my n\name_is\n..." },
824 { "Hi, my name_is\nDick", 3, 8, false, "Hi, my n\name_is\nDick" },
825 { "Hi, my name_is\nDick", 1, 9, true, "Hi, my ..." },
826 { "Hi, my name_is\nDick", 2, 9, true, "Hi, my name_is\n..." },
827 { "Hi, my name_is\nDick", 3, 9, false, "Hi, my name_is\nDick" },
828 { "Hi, my name_is\nDick", 1, 10, true, "Hi, my ..." },
829 { "Hi, my name_is\nDick", 2, 10, true, "Hi, my name_is\n..." },
830 { "Hi, my name_is\nDick", 3, 10, false, "Hi, my name_is\nDick" },
831 { "Hi, my name_is\nDick", 1, 11, true, "Hi, my ..." },
832 { "Hi, my name_is\nDick", 2, 11, true, "Hi, my name_is\n..." },
833 { "Hi, my name_is\nDick", 3, 11, false, "Hi, my name_is\nDick" },
834 { "Hi, my name_is\nDick", 1, 12, true, "Hi, my ..." },
835 { "Hi, my name_is\nDick", 2, 12, true, "Hi, my name_is\n..." },
836 { "Hi, my name_is\nDick", 3, 12, false, "Hi, my name_is\nDick" },
837 { "Hi, my name_is\nDick", 1, 13, true, "Hi, my ..." },
838 { "Hi, my name_is\nDick", 2, 13, true, "Hi, my name_is\n..." },
839 { "Hi, my name_is\nDick", 3, 13, false, "Hi, my name_is\nDick" },
840 { "Hi, my name_is\nDick", 1, 20, true, "Hi, my name_is\n..." },
841 { "Hi, my name_is\nDick", 2, 20, false, "Hi, my name_is\nDick" },
842 { "Hi, my name_is Dick", 1, 40, false, "Hi, my name_is Dick" },
843 };
844 base::string16 output;
845 for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
846 EXPECT_EQ(cases[i].result,
847 ElideRectangleString(UTF8ToUTF16(cases[i].input),
848 cases[i].max_rows, cases[i].max_cols,
849 false, &output));
850 EXPECT_EQ(cases[i].output, UTF16ToUTF8(output));
851 }
852 }
853
854 TEST(TextEliderTest, ElideRectangleWide16) {
855 // Two greek words separated by space.
856 const base::string16 str(WideToUTF16(
857 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9"
858 L"\x03bf\x03c2\x0020\x0399\x03c3\x03c4\x03cc\x03c2"));
859 const base::string16 out1(WideToUTF16(
860 L"\x03a0\x03b1\x03b3\x03ba\n"
861 L"\x03cc\x03c3\x03bc\x03b9\n"
862 L"..."));
863 const base::string16 out2(WideToUTF16(
864 L"\x03a0\x03b1\x03b3\x03ba\x03cc\x03c3\x03bc\x03b9\x03bf\x03c2\x0020\n"
865 L"\x0399\x03c3\x03c4\x03cc\x03c2"));
866 base::string16 output;
867 EXPECT_TRUE(ElideRectangleString(str, 2, 4, true, &output));
868 EXPECT_EQ(out1, output);
869 EXPECT_FALSE(ElideRectangleString(str, 2, 12, true, &output));
870 EXPECT_EQ(out2, output);
871 }
872
873 TEST(TextEliderTest, ElideRectangleWide32) {
874 // Four U+1D49C MATHEMATICAL SCRIPT CAPITAL A followed by space "aaaaa".
875 const base::string16 str(UTF8ToUTF16(
876 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C"
877 " aaaaa"));
878 const base::string16 out(UTF8ToUTF16(
879 "\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\xF0\x9D\x92\x9C\n"
880 "\xF0\x9D\x92\x9C \naaa\n..."));
881 base::string16 output;
882 EXPECT_TRUE(ElideRectangleString(str, 3, 3, true, &output));
883 EXPECT_EQ(out, output);
884 }
885
886 TEST(TextEliderTest, TruncateString) {
887 base::string16 string = ASCIIToUTF16("foooooey bxxxar baz");
888
889 // Make sure it doesn't modify the string if length > string length.
890 EXPECT_EQ(string, TruncateString(string, 100));
891
892 // Test no characters.
893 EXPECT_EQ(L"", UTF16ToWide(TruncateString(string, 0)));
894
895 // Test 1 character.
896 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(string, 1)));
897
898 // Test adds ... at right spot when there is enough room to break at a
899 // word boundary.
900 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 14)));
901
902 // Test adds ... at right spot when there is not enough space in first word.
903 EXPECT_EQ(L"f\x2026", UTF16ToWide(TruncateString(string, 2)));
904
905 // Test adds ... at right spot when there is not enough room to break at a
906 // word boundary.
907 EXPECT_EQ(L"foooooey\x2026", UTF16ToWide(TruncateString(string, 11)));
908
909 // Test completely truncates string if break is on initial whitespace.
910 EXPECT_EQ(L"\x2026", UTF16ToWide(TruncateString(ASCIIToUTF16(" "), 2)));
911 }
912
913 } // namespace gfx