1 /*
2 * Copyright (C) 2018 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "perfetto/ext/base/string_utils.h"
18
19 #include <optional>
20 #include "test/gtest_and_gmock.h"
21
22 namespace perfetto {
23 namespace base {
24 namespace {
25
26 template <size_t N>
27 struct UninitializedBuf {
UninitializedBufperfetto::base::__anon4f2e96890111::UninitializedBuf28 UninitializedBuf() { memset(data, '?', sizeof(data)); }
operator char*perfetto::base::__anon4f2e96890111::UninitializedBuf29 operator char*() { return data; }
30 char data[N];
31 };
32
33 using testing::ElementsAre;
34
TEST(StringUtilsTest,Lowercase)35 TEST(StringUtilsTest, Lowercase) {
36 EXPECT_EQ(Lowercase('A'), 'a');
37 EXPECT_EQ(Lowercase('a'), 'a');
38 EXPECT_EQ(Lowercase('Z'), 'z');
39 EXPECT_EQ(Lowercase('z'), 'z');
40 EXPECT_EQ(Lowercase('!'), '!');
41 }
42
TEST(StringUtilsTest,Uppercase)43 TEST(StringUtilsTest, Uppercase) {
44 EXPECT_EQ(Uppercase('A'), 'A');
45 EXPECT_EQ(Uppercase('a'), 'A');
46 EXPECT_EQ(Uppercase('Z'), 'Z');
47 EXPECT_EQ(Uppercase('z'), 'Z');
48 EXPECT_EQ(Uppercase('!'), '!');
49 }
50
TEST(StringUtilsTest,CStringToUInt32)51 TEST(StringUtilsTest, CStringToUInt32) {
52 EXPECT_EQ(CStringToUInt32("0"), std::make_optional<uint32_t>(0U));
53 EXPECT_EQ(CStringToUInt32("1"), std::make_optional<uint32_t>(1U));
54 EXPECT_EQ(CStringToUInt32("42"), std::make_optional<uint32_t>(42U));
55 EXPECT_EQ(CStringToUInt32(""), std::nullopt);
56 EXPECT_EQ(CStringToUInt32("!?"), std::nullopt);
57 EXPECT_EQ(CStringToUInt32("abc"), std::nullopt);
58 EXPECT_EQ(CStringToUInt32("123 abc"), std::nullopt);
59 }
60
TEST(StringUtilsTest,CStringToInt32)61 TEST(StringUtilsTest, CStringToInt32) {
62 EXPECT_EQ(CStringToInt32("0"), std::make_optional<int32_t>(0));
63 EXPECT_EQ(CStringToInt32("1"), std::make_optional<int32_t>(1));
64 EXPECT_EQ(CStringToInt32("-42"), std::make_optional<int32_t>(-42));
65 EXPECT_EQ(CStringToInt32(""), std::nullopt);
66 EXPECT_EQ(CStringToInt32("!?"), std::nullopt);
67 EXPECT_EQ(CStringToInt32("abc"), std::nullopt);
68 EXPECT_EQ(CStringToInt32("123 abc"), std::nullopt);
69 }
70
TEST(StringUtilsTest,CStringToDouble)71 TEST(StringUtilsTest, CStringToDouble) {
72 EXPECT_DOUBLE_EQ(CStringToDouble("0").value(), 0l);
73 EXPECT_DOUBLE_EQ(CStringToDouble("1").value(), 1l);
74 EXPECT_DOUBLE_EQ(CStringToDouble("-42").value(), -42l);
75 EXPECT_DOUBLE_EQ(CStringToDouble("-42.5").value(), -42.5l);
76 EXPECT_EQ(CStringToDouble(""), std::nullopt);
77 EXPECT_EQ(CStringToDouble("!?"), std::nullopt);
78 EXPECT_EQ(CStringToDouble("abc"), std::nullopt);
79 EXPECT_EQ(CStringToDouble("123 abc"), std::nullopt);
80 }
81
TEST(StringUtilsTest,StringToUInt32)82 TEST(StringUtilsTest, StringToUInt32) {
83 EXPECT_EQ(StringToUInt32("0"), std::make_optional<uint32_t>(0U));
84 EXPECT_EQ(StringToUInt32("1"), std::make_optional<uint32_t>(1U));
85 EXPECT_EQ(StringToUInt32("42"), std::make_optional<uint32_t>(42U));
86 EXPECT_EQ(StringToUInt32("a", 16), std::make_optional<uint32_t>(10U));
87 EXPECT_EQ(StringToUInt32("fffffff0", 16),
88 std::make_optional<uint32_t>(0xfffffff0));
89 EXPECT_EQ(StringToUInt32(""), std::nullopt);
90 EXPECT_EQ(StringToUInt32("!?"), std::nullopt);
91 EXPECT_EQ(StringToUInt32("abc"), std::nullopt);
92 EXPECT_EQ(StringToUInt32("123 abc"), std::nullopt);
93 EXPECT_EQ(StringToUInt32("beefz", 16), std::nullopt);
94 }
95
TEST(StringUtilsTest,StringToInt32)96 TEST(StringUtilsTest, StringToInt32) {
97 EXPECT_EQ(StringToInt32("0"), std::make_optional<int32_t>(0));
98 EXPECT_EQ(StringToInt32("1"), std::make_optional<int32_t>(1));
99 EXPECT_EQ(StringToInt32("-42"), std::make_optional<int32_t>(-42));
100 EXPECT_EQ(StringToInt32("42", 16), std::make_optional<int32_t>(0x42));
101 EXPECT_EQ(StringToInt32("7ffffffe", 16),
102 std::make_optional<int32_t>(0x7ffffffe));
103 EXPECT_EQ(StringToInt32(""), std::nullopt);
104 EXPECT_EQ(StringToInt32("!?"), std::nullopt);
105 EXPECT_EQ(StringToInt32("abc"), std::nullopt);
106 EXPECT_EQ(StringToInt32("123 abc"), std::nullopt);
107 EXPECT_EQ(StringToInt32("beefz", 16), std::nullopt);
108 }
109
TEST(StringUtilsTest,StringToUInt64)110 TEST(StringUtilsTest, StringToUInt64) {
111 EXPECT_EQ(StringToUInt64("0"), std::make_optional<uint64_t>(0u));
112 EXPECT_EQ(StringToUInt64("1"), std::make_optional<uint64_t>(1u));
113 EXPECT_EQ(StringToUInt64("5000000000"),
114 std::make_optional<uint64_t>(5000000000ULL));
115 EXPECT_EQ(StringToUInt64("7ffffffffffffffe", 16),
116 std::make_optional<uint64_t>(0x7ffffffffffffffeULL));
117 EXPECT_EQ(StringToUInt64("9ffffffffffffffe", 16),
118 std::make_optional<uint64_t>(0x9ffffffffffffffeULL));
119 EXPECT_EQ(StringToUInt64(""), std::nullopt);
120 EXPECT_EQ(StringToUInt64("abc"), std::nullopt);
121 EXPECT_EQ(StringToUInt64("beefz", 16), std::nullopt);
122 }
123
TEST(StringUtilsTest,StringToInt64)124 TEST(StringUtilsTest, StringToInt64) {
125 EXPECT_EQ(StringToInt64("0"), std::make_optional<int64_t>(0));
126 EXPECT_EQ(StringToInt64("1"), std::make_optional<int64_t>(1));
127 EXPECT_EQ(StringToInt64("-5000000000"),
128 std::make_optional<int64_t>(-5000000000LL));
129 EXPECT_EQ(StringToInt64("5000000000"),
130 std::make_optional<int64_t>(5000000000LL));
131 EXPECT_EQ(StringToInt64("7ffffffffffffffe", 16),
132 std::make_optional<int64_t>(0x7ffffffffffffffeLL));
133 EXPECT_EQ(StringToInt64("9ffffffe", 16),
134 std::make_optional<int64_t>(0x9ffffffeLL));
135 EXPECT_EQ(StringToInt64(""), std::nullopt);
136 EXPECT_EQ(StringToInt64("abc"), std::nullopt);
137 EXPECT_EQ(StringToInt64("beefz", 16), std::nullopt);
138 }
139
TEST(StringUtilsTest,StringToDouble)140 TEST(StringUtilsTest, StringToDouble) {
141 EXPECT_DOUBLE_EQ(StringToDouble("0").value(), 0l);
142 EXPECT_DOUBLE_EQ(StringToDouble("1").value(), 1l);
143 EXPECT_DOUBLE_EQ(StringToDouble("-42").value(), -42l);
144 EXPECT_DOUBLE_EQ(StringToDouble("-42.5").value(), -42.5l);
145 EXPECT_DOUBLE_EQ(StringToDouble("0.5").value(), .5l);
146 EXPECT_DOUBLE_EQ(StringToDouble(".5").value(), .5l);
147 EXPECT_EQ(StringToDouble(""), std::nullopt);
148 EXPECT_EQ(StringToDouble("!?"), std::nullopt);
149 EXPECT_EQ(StringToDouble("abc"), std::nullopt);
150 EXPECT_EQ(StringToDouble("123 abc"), std::nullopt);
151 EXPECT_EQ(StringToDouble("124,456"), std::nullopt);
152 EXPECT_EQ(StringToDouble("4 2"), std::nullopt);
153 EXPECT_EQ(StringToDouble(" - 42"), std::nullopt);
154 }
155
TEST(StringUtilsTest,StartsWith)156 TEST(StringUtilsTest, StartsWith) {
157 EXPECT_TRUE(StartsWith("", ""));
158 EXPECT_TRUE(StartsWith("abc", ""));
159 EXPECT_TRUE(StartsWith("abc", "a"));
160 EXPECT_TRUE(StartsWith("abc", "ab"));
161 EXPECT_TRUE(StartsWith("abc", "abc"));
162 EXPECT_FALSE(StartsWith("abc", "abcd"));
163 EXPECT_FALSE(StartsWith("aa", "ab"));
164 EXPECT_FALSE(StartsWith("", "ab"));
165 }
166
TEST(StringUtilsTest,StartsWithAny)167 TEST(StringUtilsTest, StartsWithAny) {
168 EXPECT_FALSE(StartsWithAny("", {"a", "b"}));
169 EXPECT_FALSE(StartsWithAny("abcd", {}));
170 EXPECT_FALSE(StartsWithAny("", {}));
171 EXPECT_TRUE(StartsWithAny("abcd", {"ac", "ab"}));
172 EXPECT_FALSE(StartsWithAny("abcd", {"bc", "ac"}));
173 }
174
TEST(StringUtilsTest,EndsWith)175 TEST(StringUtilsTest, EndsWith) {
176 EXPECT_TRUE(EndsWith("", ""));
177 EXPECT_TRUE(EndsWith("abc", ""));
178 EXPECT_TRUE(EndsWith("abc", "c"));
179 EXPECT_TRUE(EndsWith("abc", "bc"));
180 EXPECT_TRUE(EndsWith("abc", "abc"));
181 EXPECT_FALSE(EndsWith("bcd", "abcd"));
182 EXPECT_FALSE(EndsWith("abc", "abd"));
183 EXPECT_FALSE(EndsWith("", "c"));
184 }
185
TEST(StringUtilsTest,ToHex)186 TEST(StringUtilsTest, ToHex) {
187 EXPECT_EQ(ToHex(""), "");
188 EXPECT_EQ(ToHex("abc123"), "616263313233");
189 }
190
TEST(StringUtilsTest,IntToHex)191 TEST(StringUtilsTest, IntToHex) {
192 EXPECT_EQ(IntToHexString(0), "0x00");
193 EXPECT_EQ(IntToHexString(1), "0x01");
194 EXPECT_EQ(IntToHexString(16), "0x10");
195 EXPECT_EQ(IntToHexString(4294967295), "0xffffffff");
196 }
197
TEST(StringUtilsTest,Uint64ToHex)198 TEST(StringUtilsTest, Uint64ToHex) {
199 EXPECT_EQ(Uint64ToHexString(0), "0x0");
200 EXPECT_EQ(Uint64ToHexString(1), "0x1");
201 EXPECT_EQ(Uint64ToHexString(16), "0x10");
202 EXPECT_EQ(Uint64ToHexString(18446744073709551615UL), "0xffffffffffffffff");
203 }
204
TEST(StringUtilsTest,Uint64ToHexNoPrefix)205 TEST(StringUtilsTest, Uint64ToHexNoPrefix) {
206 EXPECT_EQ(Uint64ToHexStringNoPrefix(0), "0");
207 EXPECT_EQ(Uint64ToHexStringNoPrefix(1), "1");
208 EXPECT_EQ(Uint64ToHexStringNoPrefix(16), "10");
209 EXPECT_EQ(Uint64ToHexStringNoPrefix(18446744073709551615UL),
210 "ffffffffffffffff");
211 }
212
TEST(StringUtilsTest,CaseInsensitiveEqual)213 TEST(StringUtilsTest, CaseInsensitiveEqual) {
214 EXPECT_TRUE(CaseInsensitiveEqual("", ""));
215 EXPECT_TRUE(CaseInsensitiveEqual("abc", "abc"));
216 EXPECT_TRUE(CaseInsensitiveEqual("ABC", "abc"));
217 EXPECT_TRUE(CaseInsensitiveEqual("abc", "ABC"));
218 EXPECT_FALSE(CaseInsensitiveEqual("abc", "AB"));
219 EXPECT_FALSE(CaseInsensitiveEqual("ab", "ABC"));
220 }
221
TEST(StringUtilsTest,SplitString)222 TEST(StringUtilsTest, SplitString) {
223 EXPECT_THAT(SplitString("", ":"), ElementsAre());
224 EXPECT_THAT(SplitString("a:b:c", ":"), ElementsAre("a", "b", "c"));
225 EXPECT_THAT(SplitString("a::b::c", "::"), ElementsAre("a", "b", "c"));
226 EXPECT_THAT(SplitString("::::a::b::::c::", "::"), ElementsAre("a", "b", "c"));
227 EXPECT_THAT(SplitString("abc", ":"), ElementsAre("abc"));
228 EXPECT_THAT(SplitString("abc", "::"), ElementsAre("abc"));
229 EXPECT_THAT(SplitString("abc", ":"), ElementsAre("abc"));
230 EXPECT_THAT(SplitString("abc", "::"), ElementsAre("abc"));
231 }
232
TEST(StringUtilsTest,Strip)233 TEST(StringUtilsTest, Strip) {
234 EXPECT_EQ(StripPrefix("abc", ""), "abc");
235 EXPECT_EQ(StripPrefix("abc", "a"), "bc");
236 EXPECT_EQ(StripPrefix("abc", "ab"), "c");
237 EXPECT_EQ(StripPrefix("abc", "abc"), "");
238 EXPECT_EQ(StripPrefix("abc", "abcd"), "abc");
239
240 EXPECT_EQ(StripSuffix("abc", ""), "abc");
241 EXPECT_EQ(StripSuffix("abc", "c"), "ab");
242 EXPECT_EQ(StripSuffix("abc", "bc"), "a");
243 EXPECT_EQ(StripSuffix("abc", "abc"), "");
244 EXPECT_EQ(StripSuffix("abc", "ebcd"), "abc");
245
246 EXPECT_EQ(StripChars("foobar", "", '_'), "foobar");
247 EXPECT_EQ(StripChars("foobar", "x", '_'), "foobar");
248 EXPECT_EQ(StripChars("foobar", "f", '_'), "_oobar");
249 EXPECT_EQ(StripChars("foobar", "o", '_'), "f__bar");
250 EXPECT_EQ(StripChars("foobar", "oa", '_'), "f__b_r");
251 EXPECT_EQ(StripChars("foobar", "fbr", '_'), "_oo_a_");
252 EXPECT_EQ(StripChars("foobar", "froab", '_'), "______");
253 }
254
TEST(StringUtilsTest,TrimWhitespace)255 TEST(StringUtilsTest, TrimWhitespace) {
256 EXPECT_EQ(TrimWhitespace(""), "");
257 EXPECT_EQ(TrimWhitespace(" "), "");
258 EXPECT_EQ(TrimWhitespace("\t\n"), "");
259
260 EXPECT_EQ(TrimWhitespace("\tx\n\n"), "x");
261 EXPECT_EQ(TrimWhitespace("\tx\n"), "x");
262 EXPECT_EQ(TrimWhitespace("\tx\nx\n"), "x\nx");
263 }
264
TEST(StringUtilsTest,Contains)265 TEST(StringUtilsTest, Contains) {
266 EXPECT_TRUE(Contains("", ""));
267 EXPECT_TRUE(Contains("abc", ""));
268 EXPECT_TRUE(Contains("abc", "a"));
269 EXPECT_TRUE(Contains("abc", "b"));
270 EXPECT_TRUE(Contains("abc", "c"));
271 EXPECT_TRUE(Contains("abc", "ab"));
272 EXPECT_TRUE(Contains("abc", "bc"));
273 EXPECT_TRUE(Contains("abc", "abc"));
274 EXPECT_FALSE(Contains("abc", "d"));
275 EXPECT_FALSE(Contains("abc", "ac"));
276 EXPECT_FALSE(Contains("abc", "abcd"));
277 EXPECT_FALSE(Contains("", "a"));
278 EXPECT_FALSE(Contains("", "abc"));
279 }
280
TEST(StringUtilsTest,Find)281 TEST(StringUtilsTest, Find) {
282 EXPECT_EQ(Find("", ""), 0u);
283 EXPECT_EQ(Find("", "abc"), 0u);
284 EXPECT_EQ(Find("a", "abc"), 0u);
285 EXPECT_EQ(Find("b", "abc"), 1u);
286 EXPECT_EQ(Find("c", "abc"), 2u);
287 EXPECT_EQ(Find("ab", "abc"), 0u);
288 EXPECT_EQ(Find("bc", "abc"), 1u);
289 EXPECT_EQ(Find("abc", "abc"), 0u);
290 EXPECT_EQ(Find("d", "abc"), std::string::npos);
291 EXPECT_EQ(Find("ac", "abc"), std::string::npos);
292 EXPECT_EQ(Find("abcd", "abc"), std::string::npos);
293 EXPECT_EQ(Find("a", ""), std::string::npos);
294 EXPECT_EQ(Find("abc", ""), std::string::npos);
295 }
296
TEST(StringUtilsTest,ReplaceAll)297 TEST(StringUtilsTest, ReplaceAll) {
298 EXPECT_EQ(ReplaceAll("", "a", ""), "");
299 EXPECT_EQ(ReplaceAll("", "a", "b"), "");
300 EXPECT_EQ(ReplaceAll("a", "a", "b"), "b");
301 EXPECT_EQ(ReplaceAll("aaaa", "a", "b"), "bbbb");
302 EXPECT_EQ(ReplaceAll("aaaa", "aa", "b"), "bb");
303 EXPECT_EQ(ReplaceAll("aa", "aa", "bb"), "bb");
304 EXPECT_EQ(ReplaceAll("aa", "a", "bb"), "bbbb");
305 EXPECT_EQ(ReplaceAll("abc", "a", "b"), "bbc");
306 EXPECT_EQ(ReplaceAll("abc", "c", "b"), "abb");
307 EXPECT_EQ(ReplaceAll("abc", "c", "bbb"), "abbbb");
308 }
309
TEST(StringUtilsTest,StringCopy)310 TEST(StringUtilsTest, StringCopy) {
311 // Nothing should be written when |dst_size| = 0.
312 {
313 char dst[2] = {42, 43};
314 StringCopy(dst, "12345", 0);
315 EXPECT_EQ(42, dst[0]);
316 EXPECT_EQ(43, dst[1]);
317 }
318
319 // Nominal case, len(src) < sizeof(dst).
320 {
321 UninitializedBuf<10> dst;
322 StringCopy(dst, "1234567", sizeof(dst));
323 EXPECT_STREQ(dst, "1234567");
324 }
325
326 // Edge case where we perfectly fit including the \0.
327 {
328 UninitializedBuf<8> dst;
329 StringCopy(dst, "1234567", sizeof(dst));
330 EXPECT_STREQ(dst, "1234567");
331 }
332
333 // Edge case where |dst| is smaller by one char.
334 {
335 UninitializedBuf<8> dst;
336 StringCopy(dst, "12345678", sizeof(dst));
337 EXPECT_STREQ(dst, "1234567");
338 }
339
340 // Case when |dst| is smaller than |src|.
341 {
342 UninitializedBuf<3> dst;
343 StringCopy(dst, "12345678", sizeof(dst));
344 EXPECT_STREQ(dst, "12");
345 }
346 }
347
TEST(StringUtilsTest,SprintfTrunc)348 TEST(StringUtilsTest, SprintfTrunc) {
349 {
350 UninitializedBuf<3> dst;
351 ASSERT_EQ(0u, SprintfTrunc(dst, sizeof(dst), "%s", ""));
352 EXPECT_STREQ(dst, "");
353 }
354
355 {
356 char dst[3]{'O', 'K', '\0'};
357 ASSERT_EQ(0u, SprintfTrunc(dst, 0, "whatever"));
358 EXPECT_STREQ(dst, "OK"); // dst_size == 0 shouldn't touch the buffer.
359 }
360
361 {
362 UninitializedBuf<1> dst;
363 ASSERT_EQ(0u, SprintfTrunc(dst, sizeof(dst), "whatever"));
364 EXPECT_STREQ(dst, "");
365 }
366
367 {
368 UninitializedBuf<3> dst;
369 ASSERT_EQ(1u, SprintfTrunc(dst, sizeof(dst), "1"));
370 EXPECT_STREQ(dst, "1");
371 }
372
373 {
374 UninitializedBuf<3> dst;
375 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "12"));
376 EXPECT_STREQ(dst, "12");
377 }
378
379 {
380 UninitializedBuf<3> dst;
381 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "123"));
382 EXPECT_STREQ(dst, "12");
383 }
384
385 {
386 UninitializedBuf<3> dst;
387 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "1234"));
388 EXPECT_STREQ(dst, "12");
389 }
390
391 {
392 UninitializedBuf<11> dst;
393 ASSERT_EQ(10u, SprintfTrunc(dst, sizeof(dst), "a %d b %s", 42, "foo"));
394 EXPECT_STREQ(dst, "a 42 b foo");
395 }
396 }
397
TEST(StringUtilsTest,StackString)398 TEST(StringUtilsTest, StackString) {
399 {
400 StackString<1> s("123");
401 EXPECT_EQ(0u, s.len());
402 EXPECT_STREQ("", s.c_str());
403 }
404
405 {
406 StackString<4> s("123");
407 EXPECT_EQ(3u, s.len());
408 EXPECT_STREQ("123", s.c_str());
409 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
410 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
411 }
412
413 {
414 StackString<3> s("123");
415 EXPECT_EQ(2u, s.len());
416 EXPECT_STREQ("12", s.c_str());
417 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
418 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
419 }
420
421 {
422 StackString<11> s("foo %d %s", 42, "bar!!!OVERFLOW");
423 EXPECT_EQ(10u, s.len());
424 EXPECT_STREQ("foo 42 bar", s.c_str());
425 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
426 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
427 }
428 }
429
TEST(FindLineTest,InvalidOffset1)430 TEST(FindLineTest, InvalidOffset1) {
431 std::string str = "abc\ndef\n\nghi";
432 uint32_t offset = 3;
433
434 auto error = FindLineWithOffset(base::StringView(str), offset);
435
436 EXPECT_FALSE(error.has_value());
437 }
438
TEST(FindLineTest,InvalidOffset2)439 TEST(FindLineTest, InvalidOffset2) {
440 std::string str = "abc\ndef\n\nghi";
441 uint32_t offset = 8;
442
443 auto error = FindLineWithOffset(base::StringView(str), offset);
444
445 EXPECT_FALSE(error.has_value());
446 }
447
TEST(FindLineTest,FirstCharacter)448 TEST(FindLineTest, FirstCharacter) {
449 std::string str = "abc\ndef\n\nghi";
450 uint32_t offset = 0;
451
452 auto error = FindLineWithOffset(base::StringView(str), offset);
453
454 EXPECT_TRUE(error.has_value());
455 ASSERT_EQ(error.value().line_num, 1ul);
456 ASSERT_EQ(error.value().line_offset, 0ul);
457 ASSERT_EQ(error.value().line, "abc");
458 }
459
TEST(FindLineTest,StandardCheck)460 TEST(FindLineTest, StandardCheck) {
461 std::string str = "abc\ndef\n\nghi";
462 uint32_t offset = 5;
463
464 auto error = FindLineWithOffset(base::StringView(str), offset);
465
466 EXPECT_TRUE(error.has_value());
467 ASSERT_EQ(error.value().line_num, 2ul);
468 ASSERT_EQ(error.value().line_offset, 1ul);
469 ASSERT_EQ(error.value().line, "def");
470 }
471
TEST(FindLineTest,TwoBreakLines)472 TEST(FindLineTest, TwoBreakLines) {
473 std::string str = "abc\ndef\n\nghi";
474 uint32_t offset = 10;
475
476 auto error = FindLineWithOffset(base::StringView(str), offset);
477
478 EXPECT_TRUE(error.has_value());
479 ASSERT_EQ(error.value().line_num, 4ul);
480 ASSERT_EQ(error.value().line_offset, 1ul);
481 ASSERT_EQ(error.value().line, "ghi");
482 }
483
TEST(FindLineTest,EndsWithBreakLine)484 TEST(FindLineTest, EndsWithBreakLine) {
485 std::string str = "abc\ndef\n\nghi\n";
486 uint32_t offset = 10;
487
488 auto error = FindLineWithOffset(base::StringView(str), offset);
489
490 EXPECT_TRUE(error.has_value());
491 ASSERT_EQ(error.value().line_num, 4ul);
492 ASSERT_EQ(error.value().line_offset, 1ul);
493 ASSERT_EQ(error.value().line, "ghi");
494 }
495
496 } // namespace
497 } // namespace base
498 } // namespace perfetto
499