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::__anon38163c380111::UninitializedBuf28 UninitializedBuf() { memset(data, '?', sizeof(data)); }
operator char*perfetto::base::__anon38163c380111::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("+0042"), std::make_optional<int32_t>(42));
101 EXPECT_EQ(StringToInt32("-42"), std::make_optional<int32_t>(-42));
102 EXPECT_EQ(StringToInt32("42", 16), std::make_optional<int32_t>(0x42));
103 EXPECT_EQ(StringToInt32("7ffffffe", 16),
104 std::make_optional<int32_t>(0x7ffffffe));
105 EXPECT_EQ(StringToInt32(""), std::nullopt);
106 EXPECT_EQ(StringToInt32("!?"), std::nullopt);
107 EXPECT_EQ(StringToInt32("abc"), std::nullopt);
108 EXPECT_EQ(StringToInt32("123 abc"), std::nullopt);
109 EXPECT_EQ(StringToInt32("beefz", 16), std::nullopt);
110 }
111
TEST(StringUtilsTest,StringToUInt64)112 TEST(StringUtilsTest, StringToUInt64) {
113 EXPECT_EQ(StringToUInt64("0"), std::make_optional<uint64_t>(0u));
114 EXPECT_EQ(StringToUInt64("1"), std::make_optional<uint64_t>(1u));
115 EXPECT_EQ(StringToUInt64("5000000000"),
116 std::make_optional<uint64_t>(5000000000ULL));
117 EXPECT_EQ(StringToUInt64("7ffffffffffffffe", 16),
118 std::make_optional<uint64_t>(0x7ffffffffffffffeULL));
119 EXPECT_EQ(StringToUInt64("9ffffffffffffffe", 16),
120 std::make_optional<uint64_t>(0x9ffffffffffffffeULL));
121 EXPECT_EQ(StringToUInt64(""), std::nullopt);
122 EXPECT_EQ(StringToUInt64("abc"), std::nullopt);
123 EXPECT_EQ(StringToUInt64("beefz", 16), std::nullopt);
124 }
125
TEST(StringUtilsTest,StringToInt64)126 TEST(StringUtilsTest, StringToInt64) {
127 EXPECT_EQ(StringToInt64("0"), std::make_optional<int64_t>(0));
128 EXPECT_EQ(StringToInt64("1"), std::make_optional<int64_t>(1));
129 EXPECT_EQ(StringToInt64("-5000000000"),
130 std::make_optional<int64_t>(-5000000000LL));
131 EXPECT_EQ(StringToInt64("5000000000"),
132 std::make_optional<int64_t>(5000000000LL));
133 EXPECT_EQ(StringToInt64("7ffffffffffffffe", 16),
134 std::make_optional<int64_t>(0x7ffffffffffffffeLL));
135 EXPECT_EQ(StringToInt64("9ffffffe", 16),
136 std::make_optional<int64_t>(0x9ffffffeLL));
137 EXPECT_EQ(StringToInt64(""), std::nullopt);
138 EXPECT_EQ(StringToInt64("abc"), std::nullopt);
139 EXPECT_EQ(StringToInt64("beefz", 16), std::nullopt);
140 }
141
TEST(StringUtilsTest,StringToDouble)142 TEST(StringUtilsTest, StringToDouble) {
143 EXPECT_DOUBLE_EQ(StringToDouble("0").value(), 0l);
144 EXPECT_DOUBLE_EQ(StringToDouble("1").value(), 1l);
145 EXPECT_DOUBLE_EQ(StringToDouble("-42").value(), -42l);
146 EXPECT_DOUBLE_EQ(StringToDouble("-42.5").value(), -42.5l);
147 EXPECT_DOUBLE_EQ(StringToDouble("0.5").value(), .5l);
148 EXPECT_DOUBLE_EQ(StringToDouble(".5").value(), .5l);
149 EXPECT_EQ(StringToDouble(""), std::nullopt);
150 EXPECT_EQ(StringToDouble("!?"), std::nullopt);
151 EXPECT_EQ(StringToDouble("abc"), std::nullopt);
152 EXPECT_EQ(StringToDouble("123 abc"), std::nullopt);
153 EXPECT_EQ(StringToDouble("124,456"), std::nullopt);
154 EXPECT_EQ(StringToDouble("4 2"), std::nullopt);
155 EXPECT_EQ(StringToDouble(" - 42"), std::nullopt);
156 }
157
TEST(StringUtilsTest,StartsWith)158 TEST(StringUtilsTest, StartsWith) {
159 EXPECT_TRUE(StartsWith("", ""));
160 EXPECT_TRUE(StartsWith("abc", ""));
161 EXPECT_TRUE(StartsWith("abc", "a"));
162 EXPECT_TRUE(StartsWith("abc", "ab"));
163 EXPECT_TRUE(StartsWith("abc", "abc"));
164 EXPECT_FALSE(StartsWith("abc", "abcd"));
165 EXPECT_FALSE(StartsWith("aa", "ab"));
166 EXPECT_FALSE(StartsWith("", "ab"));
167 }
168
TEST(StringUtilsTest,StartsWithAny)169 TEST(StringUtilsTest, StartsWithAny) {
170 EXPECT_FALSE(StartsWithAny("", {"a", "b"}));
171 EXPECT_FALSE(StartsWithAny("abcd", {}));
172 EXPECT_FALSE(StartsWithAny("", {}));
173 EXPECT_TRUE(StartsWithAny("abcd", {"ac", "ab"}));
174 EXPECT_FALSE(StartsWithAny("abcd", {"bc", "ac"}));
175 }
176
TEST(StringUtilsTest,EndsWith)177 TEST(StringUtilsTest, EndsWith) {
178 EXPECT_TRUE(EndsWith("", ""));
179 EXPECT_TRUE(EndsWith("abc", ""));
180 EXPECT_TRUE(EndsWith("abc", "c"));
181 EXPECT_TRUE(EndsWith("abc", "bc"));
182 EXPECT_TRUE(EndsWith("abc", "abc"));
183 EXPECT_FALSE(EndsWith("bcd", "abcd"));
184 EXPECT_FALSE(EndsWith("abc", "abd"));
185 EXPECT_FALSE(EndsWith("", "c"));
186 }
187
TEST(StringUtilsTest,ToHex)188 TEST(StringUtilsTest, ToHex) {
189 EXPECT_EQ(ToHex(""), "");
190 EXPECT_EQ(ToHex("abc123"), "616263313233");
191 }
192
TEST(StringUtilsTest,IntToHex)193 TEST(StringUtilsTest, IntToHex) {
194 EXPECT_EQ(IntToHexString(0), "0x00");
195 EXPECT_EQ(IntToHexString(1), "0x01");
196 EXPECT_EQ(IntToHexString(16), "0x10");
197 EXPECT_EQ(IntToHexString(4294967295), "0xffffffff");
198 }
199
TEST(StringUtilsTest,Uint64ToHex)200 TEST(StringUtilsTest, Uint64ToHex) {
201 EXPECT_EQ(Uint64ToHexString(0), "0x0");
202 EXPECT_EQ(Uint64ToHexString(1), "0x1");
203 EXPECT_EQ(Uint64ToHexString(16), "0x10");
204 EXPECT_EQ(Uint64ToHexString(18446744073709551615UL), "0xffffffffffffffff");
205 }
206
TEST(StringUtilsTest,Uint64ToHexNoPrefix)207 TEST(StringUtilsTest, Uint64ToHexNoPrefix) {
208 EXPECT_EQ(Uint64ToHexStringNoPrefix(0), "0");
209 EXPECT_EQ(Uint64ToHexStringNoPrefix(1), "1");
210 EXPECT_EQ(Uint64ToHexStringNoPrefix(16), "10");
211 EXPECT_EQ(Uint64ToHexStringNoPrefix(18446744073709551615UL),
212 "ffffffffffffffff");
213 }
214
TEST(StringUtilsTest,CaseInsensitiveEqual)215 TEST(StringUtilsTest, CaseInsensitiveEqual) {
216 EXPECT_TRUE(CaseInsensitiveEqual("", ""));
217 EXPECT_TRUE(CaseInsensitiveEqual("abc", "abc"));
218 EXPECT_TRUE(CaseInsensitiveEqual("ABC", "abc"));
219 EXPECT_TRUE(CaseInsensitiveEqual("abc", "ABC"));
220 EXPECT_FALSE(CaseInsensitiveEqual("abc", "AB"));
221 EXPECT_FALSE(CaseInsensitiveEqual("ab", "ABC"));
222 }
223
TEST(StringUtilsTest,SplitString)224 TEST(StringUtilsTest, SplitString) {
225 EXPECT_THAT(SplitString("", ":"), ElementsAre());
226 EXPECT_THAT(SplitString("a:b:c", ":"), ElementsAre("a", "b", "c"));
227 EXPECT_THAT(SplitString("a::b::c", "::"), ElementsAre("a", "b", "c"));
228 EXPECT_THAT(SplitString("::::a::b::::c::", "::"), ElementsAre("a", "b", "c"));
229 EXPECT_THAT(SplitString("abc", ":"), ElementsAre("abc"));
230 EXPECT_THAT(SplitString("abc", "::"), ElementsAre("abc"));
231 EXPECT_THAT(SplitString("abc", ":"), ElementsAre("abc"));
232 EXPECT_THAT(SplitString("abc", "::"), ElementsAre("abc"));
233 }
234
TEST(StringUtilsTest,Strip)235 TEST(StringUtilsTest, Strip) {
236 EXPECT_EQ(StripPrefix("abc", ""), "abc");
237 EXPECT_EQ(StripPrefix("abc", "a"), "bc");
238 EXPECT_EQ(StripPrefix("abc", "ab"), "c");
239 EXPECT_EQ(StripPrefix("abc", "abc"), "");
240 EXPECT_EQ(StripPrefix("abc", "abcd"), "abc");
241
242 EXPECT_EQ(StripSuffix("abc", ""), "abc");
243 EXPECT_EQ(StripSuffix("abc", "c"), "ab");
244 EXPECT_EQ(StripSuffix("abc", "bc"), "a");
245 EXPECT_EQ(StripSuffix("abc", "abc"), "");
246 EXPECT_EQ(StripSuffix("abc", "ebcd"), "abc");
247
248 EXPECT_EQ(StripChars("foobar", "", '_'), "foobar");
249 EXPECT_EQ(StripChars("foobar", "x", '_'), "foobar");
250 EXPECT_EQ(StripChars("foobar", "f", '_'), "_oobar");
251 EXPECT_EQ(StripChars("foobar", "o", '_'), "f__bar");
252 EXPECT_EQ(StripChars("foobar", "oa", '_'), "f__b_r");
253 EXPECT_EQ(StripChars("foobar", "fbr", '_'), "_oo_a_");
254 EXPECT_EQ(StripChars("foobar", "froab", '_'), "______");
255 }
256
TEST(StringUtilsTest,TrimWhitespace)257 TEST(StringUtilsTest, TrimWhitespace) {
258 EXPECT_EQ(TrimWhitespace(""), "");
259 EXPECT_EQ(TrimWhitespace(" "), "");
260 EXPECT_EQ(TrimWhitespace("\t\n"), "");
261
262 EXPECT_EQ(TrimWhitespace("\tx\n\n"), "x");
263 EXPECT_EQ(TrimWhitespace("\tx\n"), "x");
264 EXPECT_EQ(TrimWhitespace("\tx\nx\n"), "x\nx");
265 }
266
TEST(StringUtilsTest,Contains)267 TEST(StringUtilsTest, Contains) {
268 EXPECT_TRUE(Contains("", ""));
269 EXPECT_TRUE(Contains("abc", ""));
270 EXPECT_TRUE(Contains("abc", "a"));
271 EXPECT_TRUE(Contains("abc", "b"));
272 EXPECT_TRUE(Contains("abc", "c"));
273 EXPECT_TRUE(Contains("abc", "ab"));
274 EXPECT_TRUE(Contains("abc", "bc"));
275 EXPECT_TRUE(Contains("abc", "abc"));
276 EXPECT_FALSE(Contains("abc", "d"));
277 EXPECT_FALSE(Contains("abc", "ac"));
278 EXPECT_FALSE(Contains("abc", "abcd"));
279 EXPECT_FALSE(Contains("", "a"));
280 EXPECT_FALSE(Contains("", "abc"));
281 }
282
TEST(StringUtilsTest,Find)283 TEST(StringUtilsTest, Find) {
284 EXPECT_EQ(Find("", ""), 0u);
285 EXPECT_EQ(Find("", "abc"), 0u);
286 EXPECT_EQ(Find("a", "abc"), 0u);
287 EXPECT_EQ(Find("b", "abc"), 1u);
288 EXPECT_EQ(Find("c", "abc"), 2u);
289 EXPECT_EQ(Find("ab", "abc"), 0u);
290 EXPECT_EQ(Find("bc", "abc"), 1u);
291 EXPECT_EQ(Find("abc", "abc"), 0u);
292 EXPECT_EQ(Find("d", "abc"), std::string::npos);
293 EXPECT_EQ(Find("ac", "abc"), std::string::npos);
294 EXPECT_EQ(Find("abcd", "abc"), std::string::npos);
295 EXPECT_EQ(Find("a", ""), std::string::npos);
296 EXPECT_EQ(Find("abc", ""), std::string::npos);
297 }
298
TEST(StringUtilsTest,ReplaceAll)299 TEST(StringUtilsTest, ReplaceAll) {
300 EXPECT_EQ(ReplaceAll("", "a", ""), "");
301 EXPECT_EQ(ReplaceAll("", "a", "b"), "");
302 EXPECT_EQ(ReplaceAll("a", "a", "b"), "b");
303 EXPECT_EQ(ReplaceAll("aaaa", "a", "b"), "bbbb");
304 EXPECT_EQ(ReplaceAll("aaaa", "aa", "b"), "bb");
305 EXPECT_EQ(ReplaceAll("aa", "aa", "bb"), "bb");
306 EXPECT_EQ(ReplaceAll("aa", "a", "bb"), "bbbb");
307 EXPECT_EQ(ReplaceAll("abc", "a", "b"), "bbc");
308 EXPECT_EQ(ReplaceAll("abc", "c", "b"), "abb");
309 EXPECT_EQ(ReplaceAll("abc", "c", "bbb"), "abbbb");
310 }
311
TEST(StringUtilsTest,StringCopy)312 TEST(StringUtilsTest, StringCopy) {
313 // Nothing should be written when |dst_size| = 0.
314 {
315 char dst[2] = {42, 43};
316 StringCopy(dst, "12345", 0);
317 EXPECT_EQ(42, dst[0]);
318 EXPECT_EQ(43, dst[1]);
319 }
320
321 // Nominal case, len(src) < sizeof(dst).
322 {
323 UninitializedBuf<10> dst;
324 StringCopy(dst, "1234567", sizeof(dst));
325 EXPECT_STREQ(dst, "1234567");
326 }
327
328 // Edge case where we perfectly fit including the \0.
329 {
330 UninitializedBuf<8> dst;
331 StringCopy(dst, "1234567", sizeof(dst));
332 EXPECT_STREQ(dst, "1234567");
333 }
334
335 // Edge case where |dst| is smaller by one char.
336 {
337 UninitializedBuf<8> dst;
338 StringCopy(dst, "12345678", sizeof(dst));
339 EXPECT_STREQ(dst, "1234567");
340 }
341
342 // Case when |dst| is smaller than |src|.
343 {
344 UninitializedBuf<3> dst;
345 StringCopy(dst, "12345678", sizeof(dst));
346 EXPECT_STREQ(dst, "12");
347 }
348 }
349
TEST(StringUtilsTest,SprintfTrunc)350 TEST(StringUtilsTest, SprintfTrunc) {
351 {
352 UninitializedBuf<3> dst;
353 ASSERT_EQ(0u, SprintfTrunc(dst, sizeof(dst), "%s", ""));
354 EXPECT_STREQ(dst, "");
355 }
356
357 {
358 char dst[3]{'O', 'K', '\0'};
359 ASSERT_EQ(0u, SprintfTrunc(dst, 0, "whatever"));
360 EXPECT_STREQ(dst, "OK"); // dst_size == 0 shouldn't touch the buffer.
361 }
362
363 {
364 UninitializedBuf<1> dst;
365 ASSERT_EQ(0u, SprintfTrunc(dst, sizeof(dst), "whatever"));
366 EXPECT_STREQ(dst, "");
367 }
368
369 {
370 UninitializedBuf<3> dst;
371 ASSERT_EQ(1u, SprintfTrunc(dst, sizeof(dst), "1"));
372 EXPECT_STREQ(dst, "1");
373 }
374
375 {
376 UninitializedBuf<3> dst;
377 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "12"));
378 EXPECT_STREQ(dst, "12");
379 }
380
381 {
382 UninitializedBuf<3> dst;
383 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "123"));
384 EXPECT_STREQ(dst, "12");
385 }
386
387 {
388 UninitializedBuf<3> dst;
389 ASSERT_EQ(2u, SprintfTrunc(dst, sizeof(dst), "1234"));
390 EXPECT_STREQ(dst, "12");
391 }
392
393 {
394 UninitializedBuf<11> dst;
395 ASSERT_EQ(10u, SprintfTrunc(dst, sizeof(dst), "a %d b %s", 42, "foo"));
396 EXPECT_STREQ(dst, "a 42 b foo");
397 }
398 }
399
TEST(StringUtilsTest,StackString)400 TEST(StringUtilsTest, StackString) {
401 {
402 StackString<1> s("123");
403 EXPECT_EQ(0u, s.len());
404 EXPECT_STREQ("", s.c_str());
405 }
406
407 {
408 StackString<4> s("123");
409 EXPECT_EQ(3u, s.len());
410 EXPECT_STREQ("123", s.c_str());
411 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
412 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
413 }
414
415 {
416 StackString<3> s("123");
417 EXPECT_EQ(2u, s.len());
418 EXPECT_STREQ("12", s.c_str());
419 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
420 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
421 }
422
423 {
424 StackString<11> s("foo %d %s", 42, "bar!!!OVERFLOW");
425 EXPECT_EQ(10u, s.len());
426 EXPECT_STREQ("foo 42 bar", s.c_str());
427 EXPECT_EQ(s.ToStdString(), std::string(s.c_str()));
428 EXPECT_EQ(s.string_view().ToStdString(), s.ToStdString());
429 }
430 }
431
TEST(FindLineTest,InvalidOffset1)432 TEST(FindLineTest, InvalidOffset1) {
433 std::string str = "abc\ndef\n\nghi";
434 uint32_t offset = 3;
435
436 auto error = FindLineWithOffset(base::StringView(str), offset);
437
438 EXPECT_FALSE(error.has_value());
439 }
440
TEST(FindLineTest,InvalidOffset2)441 TEST(FindLineTest, InvalidOffset2) {
442 std::string str = "abc\ndef\n\nghi";
443 uint32_t offset = 8;
444
445 auto error = FindLineWithOffset(base::StringView(str), offset);
446
447 EXPECT_FALSE(error.has_value());
448 }
449
TEST(FindLineTest,FirstCharacter)450 TEST(FindLineTest, FirstCharacter) {
451 std::string str = "abc\ndef\n\nghi";
452 uint32_t offset = 0;
453
454 auto error = FindLineWithOffset(base::StringView(str), offset);
455
456 EXPECT_TRUE(error.has_value());
457 ASSERT_EQ(error.value().line_num, 1ul);
458 ASSERT_EQ(error.value().line_offset, 0ul);
459 ASSERT_EQ(error.value().line, "abc");
460 }
461
TEST(FindLineTest,StandardCheck)462 TEST(FindLineTest, StandardCheck) {
463 std::string str = "abc\ndef\n\nghi";
464 uint32_t offset = 5;
465
466 auto error = FindLineWithOffset(base::StringView(str), offset);
467
468 EXPECT_TRUE(error.has_value());
469 ASSERT_EQ(error.value().line_num, 2ul);
470 ASSERT_EQ(error.value().line_offset, 1ul);
471 ASSERT_EQ(error.value().line, "def");
472 }
473
TEST(FindLineTest,TwoBreakLines)474 TEST(FindLineTest, TwoBreakLines) {
475 std::string str = "abc\ndef\n\nghi";
476 uint32_t offset = 10;
477
478 auto error = FindLineWithOffset(base::StringView(str), offset);
479
480 EXPECT_TRUE(error.has_value());
481 ASSERT_EQ(error.value().line_num, 4ul);
482 ASSERT_EQ(error.value().line_offset, 1ul);
483 ASSERT_EQ(error.value().line, "ghi");
484 }
485
TEST(FindLineTest,EndsWithBreakLine)486 TEST(FindLineTest, EndsWithBreakLine) {
487 std::string str = "abc\ndef\n\nghi\n";
488 uint32_t offset = 10;
489
490 auto error = FindLineWithOffset(base::StringView(str), offset);
491
492 EXPECT_TRUE(error.has_value());
493 ASSERT_EQ(error.value().line_num, 4ul);
494 ASSERT_EQ(error.value().line_offset, 1ul);
495 ASSERT_EQ(error.value().line, "ghi");
496 }
497
498 } // namespace
499 } // namespace base
500 } // namespace perfetto
501