aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/libs/fmt/test/gtest-extra-test.cc
blob: ea728607e8d171db3088536ea100346ff3855334 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
// Formatting library for C++ - tests of custom Google Test assertions
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.

#include "gtest-extra.h"

#include <gtest/gtest-spi.h>

#include <algorithm>
#include <cstring>
#include <memory>
#include <stdexcept>

#if defined(_WIN32) && !defined(__MINGW32__)
#  include <crtdbg.h>  // for _CrtSetReportMode
#endif                 // _WIN32

#include "util.h"

namespace {

// This is used to suppress coverity warnings about untrusted values.
std::string sanitize(const std::string& s) {
  std::string result;
  for (std::string::const_iterator i = s.begin(), end = s.end(); i != end; ++i)
    result.push_back(static_cast<char>(*i & 0xff));
  return result;
}

// Tests that assertion macros evaluate their arguments exactly once.
class SingleEvaluationTest : public ::testing::Test {
 protected:
  SingleEvaluationTest() {
    p_ = s_;
    a_ = 0;
    b_ = 0;
  }

  static const char* const s_;
  static const char* p_;

  static int a_;
  static int b_;
};

const char* const SingleEvaluationTest::s_ = "01234";
const char* SingleEvaluationTest::p_;
int SingleEvaluationTest::a_;
int SingleEvaluationTest::b_;

void do_nothing() {}

FMT_NORETURN void throw_exception() { throw std::runtime_error("test"); }

FMT_NORETURN void throw_system_error() {
  throw fmt::system_error(EDOM, "test");
}

// Tests that when EXPECT_THROW_MSG fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_THROW_MSG) {
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(throw_exception(), std::exception, p_++), "01234");
  EXPECT_EQ(s_ + 1, p_);
}

// Tests that when EXPECT_SYSTEM_ERROR fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_SYSTEM_ERROR) {
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, p_++),
                          "01234");
  EXPECT_EQ(s_ + 1, p_);
}

// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, ExceptionTests) {
  // successful EXPECT_THROW_MSG
  EXPECT_THROW_MSG(
      {  // NOLINT
        a_++;
        throw_exception();
      },
      std::exception, (b_++, "test"));
  EXPECT_EQ(1, a_);
  EXPECT_EQ(1, b_);

  // failed EXPECT_THROW_MSG, throws different type
  EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
                              {  // NOLINT
                                a_++;
                                throw_exception();
                              },
                              std::logic_error, (b_++, "test")),
                          "throws a different type");
  EXPECT_EQ(2, a_);
  EXPECT_EQ(2, b_);

  // failed EXPECT_THROW_MSG, throws an exception with different message
  EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(
                              {  // NOLINT
                                a_++;
                                throw_exception();
                              },
                              std::exception, (b_++, "other")),
                          "throws an exception with a different message");
  EXPECT_EQ(3, a_);
  EXPECT_EQ(3, b_);

  // failed EXPECT_THROW_MSG, throws nothing
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(a_++, std::exception, (b_++, "test")), "throws nothing");
  EXPECT_EQ(4, a_);
  EXPECT_EQ(4, b_);
}

TEST_F(SingleEvaluationTest, SystemErrorTests) {
  // successful EXPECT_SYSTEM_ERROR
  EXPECT_SYSTEM_ERROR(
      {  // NOLINT
        a_++;
        throw_system_error();
      },
      EDOM, (b_++, "test"));
  EXPECT_EQ(1, a_);
  EXPECT_EQ(1, b_);

  // failed EXPECT_SYSTEM_ERROR, throws different type
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
                              {  // NOLINT
                                a_++;
                                throw_exception();
                              },
                              EDOM, (b_++, "test")),
                          "throws a different type");
  EXPECT_EQ(2, a_);
  EXPECT_EQ(2, b_);

  // failed EXPECT_SYSTEM_ERROR, throws an exception with different message
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(
                              {  // NOLINT
                                a_++;
                                throw_system_error();
                              },
                              EDOM, (b_++, "other")),
                          "throws an exception with a different message");
  EXPECT_EQ(3, a_);
  EXPECT_EQ(3, b_);

  // failed EXPECT_SYSTEM_ERROR, throws nothing
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(a_++, EDOM, (b_++, "test")),
                          "throws nothing");
  EXPECT_EQ(4, a_);
  EXPECT_EQ(4, b_);
}

#if FMT_USE_FCNTL
// Tests that when EXPECT_WRITE fails, it evaluates its message argument
// exactly once.
TEST_F(SingleEvaluationTest, FailedEXPECT_WRITE) {
  EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), p_++),
                          "01234");
  EXPECT_EQ(s_ + 1, p_);
}

// Tests that assertion arguments are evaluated exactly once.
TEST_F(SingleEvaluationTest, WriteTests) {
  // successful EXPECT_WRITE
  EXPECT_WRITE(
      stdout,
      {  // NOLINT
        a_++;
        std::printf("test");
      },
      (b_++, "test"));
  EXPECT_EQ(1, a_);
  EXPECT_EQ(1, b_);

  // failed EXPECT_WRITE
  EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(
                              stdout,
                              {  // NOLINT
                                a_++;
                                std::printf("test");
                              },
                              (b_++, "other")),
                          "Actual: test");
  EXPECT_EQ(2, a_);
  EXPECT_EQ(2, b_);
}

// Tests EXPECT_WRITE.
TEST(ExpectTest, EXPECT_WRITE) {
  EXPECT_WRITE(stdout, do_nothing(), "");
  EXPECT_WRITE(stdout, std::printf("test"), "test");
  EXPECT_WRITE(stderr, std::fprintf(stderr, "test"), "test");
  EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("that"), "this"),
                          "Expected: this\n"
                          "  Actual: that");
}

TEST(StreamingAssertionsTest, EXPECT_WRITE) {
  EXPECT_WRITE(stdout, std::printf("test"), "test") << "unexpected failure";
  EXPECT_NONFATAL_FAILURE(EXPECT_WRITE(stdout, std::printf("test"), "other")
                              << "expected failure",
                          "expected failure");
}
#endif  // FMT_USE_FCNTL

// Tests that the compiler will not complain about unreachable code in the
// EXPECT_THROW_MSG macro.
TEST(ExpectThrowTest, DoesNotGenerateUnreachableCodeWarning) {
  int n = 0;
  using std::runtime_error;
  EXPECT_THROW_MSG(throw runtime_error(""), runtime_error, "");
  EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(n++, runtime_error, ""), "");
  EXPECT_NONFATAL_FAILURE(EXPECT_THROW_MSG(throw 1, runtime_error, ""), "");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(throw runtime_error("a"), runtime_error, "b"), "");
}

// Tests that the compiler will not complain about unreachable code in the
// EXPECT_SYSTEM_ERROR macro.
TEST(ExpectSystemErrorTest, DoesNotGenerateUnreachableCodeWarning) {
  int n = 0;
  EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "test"), EDOM, "test");
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(n++, EDOM, ""), "");
  EXPECT_NONFATAL_FAILURE(EXPECT_SYSTEM_ERROR(throw 1, EDOM, ""), "");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_SYSTEM_ERROR(throw fmt::system_error(EDOM, "aaa"), EDOM, "bbb"),
      "");
}

TEST(AssertionSyntaxTest, ExceptionAssertionBehavesLikeSingleStatement) {
  if (::testing::internal::AlwaysFalse())
    EXPECT_THROW_MSG(do_nothing(), std::exception, "");

  if (::testing::internal::AlwaysTrue())
    EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
  else
    do_nothing();
}

TEST(AssertionSyntaxTest, SystemErrorAssertionBehavesLikeSingleStatement) {
  if (::testing::internal::AlwaysFalse())
    EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "");

  if (::testing::internal::AlwaysTrue())
    EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
  else
    do_nothing();
}

TEST(AssertionSyntaxTest, WriteAssertionBehavesLikeSingleStatement) {
  if (::testing::internal::AlwaysFalse())
    EXPECT_WRITE(stdout, std::printf("x"), "x");

  if (::testing::internal::AlwaysTrue())
    EXPECT_WRITE(stdout, std::printf("x"), "x");
  else
    do_nothing();
}

// Tests EXPECT_THROW_MSG.
TEST(ExpectTest, EXPECT_THROW_MSG) {
  EXPECT_THROW_MSG(throw_exception(), std::exception, "test");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(throw_exception(), std::logic_error, "test"),
      "Expected: throw_exception() throws an exception of "
      "type std::logic_error.\n  Actual: it throws a different type.");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(do_nothing(), std::exception, "test"),
      "Expected: do_nothing() throws an exception of type std::exception.\n"
      "  Actual: it throws nothing.");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(throw_exception(), std::exception, "other"),
      "throw_exception() throws an exception with a different message.\n"
      "Expected: other\n"
      "  Actual: test");
}

// Tests EXPECT_SYSTEM_ERROR.
TEST(ExpectTest, EXPECT_SYSTEM_ERROR) {
  EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_SYSTEM_ERROR(throw_exception(), EDOM, "test"),
      "Expected: throw_exception() throws an exception of "
      "type fmt::system_error.\n  Actual: it throws a different type.");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_SYSTEM_ERROR(do_nothing(), EDOM, "test"),
      "Expected: do_nothing() throws an exception of type fmt::system_error.\n"
      "  Actual: it throws nothing.");
  EXPECT_NONFATAL_FAILURE(
      EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other"),
      fmt::format(
          "throw_system_error() throws an exception with a different message.\n"
          "Expected: {}\n"
          "  Actual: {}",
          format_system_error(EDOM, "other"),
          format_system_error(EDOM, "test")));
}

TEST(StreamingAssertionsTest, EXPECT_THROW_MSG) {
  EXPECT_THROW_MSG(throw_exception(), std::exception, "test")
      << "unexpected failure";
  EXPECT_NONFATAL_FAILURE(
      EXPECT_THROW_MSG(throw_exception(), std::exception, "other")
          << "expected failure",
      "expected failure");
}

TEST(StreamingAssertionsTest, EXPECT_SYSTEM_ERROR) {
  EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "test")
      << "unexpected failure";
  EXPECT_NONFATAL_FAILURE(
      EXPECT_SYSTEM_ERROR(throw_system_error(), EDOM, "other")
          << "expected failure",
      "expected failure");
}

TEST(UtilTest, FormatSystemError) {
  fmt::memory_buffer out;
  fmt::format_system_error(out, EDOM, "test message");
  EXPECT_EQ(to_string(out), format_system_error(EDOM, "test message"));
}

#if FMT_USE_FCNTL

using fmt::buffered_file;
using fmt::error_code;
using fmt::file;

TEST(ErrorCodeTest, Ctor) {
  EXPECT_EQ(error_code().get(), 0);
  EXPECT_EQ(error_code(42).get(), 42);
}

TEST(OutputRedirectTest, ScopedRedirect) {
  file read_end, write_end;
  file::pipe(read_end, write_end);
  {
    buffered_file file(write_end.fdopen("w"));
    std::fprintf(file.get(), "[[[");
    {
      OutputRedirect redir(file.get());
      std::fprintf(file.get(), "censored");
    }
    std::fprintf(file.get(), "]]]");
  }
  EXPECT_READ(read_end, "[[[]]]");
}

// Test that OutputRedirect handles errors in flush correctly.
TEST(OutputRedirectTest, FlushErrorInCtor) {
  file read_end, write_end;
  file::pipe(read_end, write_end);
  int write_fd = write_end.descriptor();
  file write_copy = write_end.dup(write_fd);
  buffered_file f = write_end.fdopen("w");
  // Put a character in a file buffer.
  EXPECT_EQ('x', fputc('x', f.get()));
  FMT_POSIX(close(write_fd));
  std::unique_ptr<OutputRedirect> redir{nullptr};
  EXPECT_SYSTEM_ERROR_NOASSERT(redir.reset(new OutputRedirect(f.get())), EBADF,
                               "cannot flush stream");
  redir.reset(nullptr);
  write_copy.dup2(write_fd);  // "undo" close or dtor will fail
}

TEST(OutputRedirectTest, DupErrorInCtor) {
  buffered_file f = open_buffered_file();
  int fd = (f.fileno)();
  file copy = file::dup(fd);
  FMT_POSIX(close(fd));
  std::unique_ptr<OutputRedirect> redir{nullptr};
  EXPECT_SYSTEM_ERROR_NOASSERT(
      redir.reset(new OutputRedirect(f.get())), EBADF,
      fmt::format("cannot duplicate file descriptor {}", fd));
  copy.dup2(fd);  // "undo" close or dtor will fail
}

TEST(OutputRedirectTest, RestoreAndRead) {
  file read_end, write_end;
  file::pipe(read_end, write_end);
  buffered_file file(write_end.fdopen("w"));
  std::fprintf(file.get(), "[[[");
  OutputRedirect redir(file.get());
  std::fprintf(file.get(), "censored");
  EXPECT_EQ("censored", sanitize(redir.restore_and_read()));
  EXPECT_EQ("", sanitize(redir.restore_and_read()));
  std::fprintf(file.get(), "]]]");
  file = buffered_file();
  EXPECT_READ(read_end, "[[[]]]");
}

// Test that OutputRedirect handles errors in flush correctly.
TEST(OutputRedirectTest, FlushErrorInRestoreAndRead) {
  file read_end, write_end;
  file::pipe(read_end, write_end);
  int write_fd = write_end.descriptor();
  file write_copy = write_end.dup(write_fd);
  buffered_file f = write_end.fdopen("w");
  OutputRedirect redir(f.get());
  // Put a character in a file buffer.
  EXPECT_EQ('x', fputc('x', f.get()));
  FMT_POSIX(close(write_fd));
  EXPECT_SYSTEM_ERROR_NOASSERT(redir.restore_and_read(), EBADF,
                               "cannot flush stream");
  write_copy.dup2(write_fd);  // "undo" close or dtor will fail
}

TEST(OutputRedirectTest, ErrorInDtor) {
  file read_end, write_end;
  file::pipe(read_end, write_end);
  int write_fd = write_end.descriptor();
  file write_copy = write_end.dup(write_fd);
  buffered_file f = write_end.fdopen("w");
  std::unique_ptr<OutputRedirect> redir(new OutputRedirect(f.get()));
  // Put a character in a file buffer.
  EXPECT_EQ('x', fputc('x', f.get()));
  EXPECT_WRITE(
      stderr,
      {
        // The close function must be called inside EXPECT_WRITE,
        // otherwise the system may recycle closed file descriptor when
        // redirecting the output in EXPECT_STDERR and the second close
        // will break output redirection.
        FMT_POSIX(close(write_fd));
        SUPPRESS_ASSERT(redir.reset(nullptr));
      },
      format_system_error(EBADF, "cannot flush stream"));
  write_copy.dup2(write_fd);  // "undo" close or dtor of buffered_file will fail
}

#endif  // FMT_USE_FILE_DESCRIPTORS

}  // namespace