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gtest-death-test_test.cc
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30 // Author: wan@google.com (Zhanyong Wan)
31 //
32 // Tests for death tests.
33 
34 #include "gtest/gtest-death-test.h"
35 #include "gtest/gtest.h"
37 
40 
41 #if GTEST_HAS_DEATH_TEST
42 
43 # if GTEST_OS_WINDOWS
44 # include <direct.h> // For chdir().
45 # else
46 # include <unistd.h>
47 # include <sys/wait.h> // For waitpid.
48 # endif // GTEST_OS_WINDOWS
49 
50 # include <limits.h>
51 # include <signal.h>
52 # include <stdio.h>
53 
54 # if GTEST_OS_LINUX
55 # include <sys/time.h>
56 # endif // GTEST_OS_LINUX
57 
58 # include "gtest/gtest-spi.h"
59 
60 // Indicates that this translation unit is part of Google Test's
61 // implementation. It must come before gtest-internal-inl.h is
62 // included, or there will be a compiler error. This trick is to
63 // prevent a user from accidentally including gtest-internal-inl.h in
64 // his code.
65 # define GTEST_IMPLEMENTATION_ 1
66 # include "src/gtest-internal-inl.h"
67 # undef GTEST_IMPLEMENTATION_
68 
69 namespace posix = ::testing::internal::posix;
70 
71 using testing::Message;
72 using testing::internal::DeathTest;
73 using testing::internal::DeathTestFactory;
75 using testing::internal::GetLastErrnoDescription;
77 using testing::internal::InDeathTestChild;
78 using testing::internal::ParseNaturalNumber;
79 
80 namespace testing {
81 namespace internal {
82 
83 // A helper class whose objects replace the death test factory for a
84 // single UnitTest object during their lifetimes.
85 class ReplaceDeathTestFactory {
86  public:
87  explicit ReplaceDeathTestFactory(DeathTestFactory* new_factory)
88  : unit_test_impl_(GetUnitTestImpl()) {
89  old_factory_ = unit_test_impl_->death_test_factory_.release();
90  unit_test_impl_->death_test_factory_.reset(new_factory);
91  }
92 
93  ~ReplaceDeathTestFactory() {
94  unit_test_impl_->death_test_factory_.release();
95  unit_test_impl_->death_test_factory_.reset(old_factory_);
96  }
97  private:
98  // Prevents copying ReplaceDeathTestFactory objects.
99  ReplaceDeathTestFactory(const ReplaceDeathTestFactory&);
100  void operator=(const ReplaceDeathTestFactory&);
101 
102  UnitTestImpl* unit_test_impl_;
103  DeathTestFactory* old_factory_;
104 };
105 
106 } // namespace internal
107 } // namespace testing
108 
109 void DieWithMessage(const ::std::string& message) {
110  fprintf(stderr, "%s", message.c_str());
111  fflush(stderr); // Make sure the text is printed before the process exits.
112 
113  // We call _exit() instead of exit(), as the former is a direct
114  // system call and thus safer in the presence of threads. exit()
115  // will invoke user-defined exit-hooks, which may do dangerous
116  // things that conflict with death tests.
117  //
118  // Some compilers can recognize that _exit() never returns and issue the
119  // 'unreachable code' warning for code following this function, unless
120  // fooled by a fake condition.
121  if (AlwaysTrue())
122  _exit(1);
123 }
124 
125 void DieInside(const ::std::string& function) {
126  DieWithMessage("death inside " + function + "().");
127 }
128 
129 // Tests that death tests work.
130 
131 class TestForDeathTest : public testing::Test {
132  protected:
133  TestForDeathTest() : original_dir_(FilePath::GetCurrentDir()) {}
134 
135  virtual ~TestForDeathTest() {
136  posix::ChDir(original_dir_.c_str());
137  }
138 
139  // A static member function that's expected to die.
140  static void StaticMemberFunction() { DieInside("StaticMemberFunction"); }
141 
142  // A method of the test fixture that may die.
143  void MemberFunction() {
144  if (should_die_)
145  DieInside("MemberFunction");
146  }
147 
148  // True iff MemberFunction() should die.
149  bool should_die_;
150  const FilePath original_dir_;
151 };
152 
153 // A class with a member function that may die.
154 class MayDie {
155  public:
156  explicit MayDie(bool should_die) : should_die_(should_die) {}
157 
158  // A member function that may die.
159  void MemberFunction() const {
160  if (should_die_)
161  DieInside("MayDie::MemberFunction");
162  }
163 
164  private:
165  // True iff MemberFunction() should die.
166  bool should_die_;
167 };
168 
169 // A global function that's expected to die.
170 void GlobalFunction() { DieInside("GlobalFunction"); }
171 
172 // A non-void function that's expected to die.
173 int NonVoidFunction() {
174  DieInside("NonVoidFunction");
175  return 1;
176 }
177 
178 // A unary function that may die.
179 void DieIf(bool should_die) {
180  if (should_die)
181  DieInside("DieIf");
182 }
183 
184 // A binary function that may die.
185 bool DieIfLessThan(int x, int y) {
186  if (x < y) {
187  DieInside("DieIfLessThan");
188  }
189  return true;
190 }
191 
192 // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
193 void DeathTestSubroutine() {
194  EXPECT_DEATH(GlobalFunction(), "death.*GlobalFunction");
195  ASSERT_DEATH(GlobalFunction(), "death.*GlobalFunction");
196 }
197 
198 // Death in dbg, not opt.
199 int DieInDebugElse12(int* sideeffect) {
200  if (sideeffect) *sideeffect = 12;
201 
202 # ifndef NDEBUG
203 
204  DieInside("DieInDebugElse12");
205 
206 # endif // NDEBUG
207 
208  return 12;
209 }
210 
211 # if GTEST_OS_WINDOWS
212 
213 // Tests the ExitedWithCode predicate.
214 TEST(ExitStatusPredicateTest, ExitedWithCode) {
215  // On Windows, the process's exit code is the same as its exit status,
216  // so the predicate just compares the its input with its parameter.
217  EXPECT_TRUE(testing::ExitedWithCode(0)(0));
218  EXPECT_TRUE(testing::ExitedWithCode(1)(1));
219  EXPECT_TRUE(testing::ExitedWithCode(42)(42));
220  EXPECT_FALSE(testing::ExitedWithCode(0)(1));
221  EXPECT_FALSE(testing::ExitedWithCode(1)(0));
222 }
223 
224 # else
225 
226 // Returns the exit status of a process that calls _exit(2) with a
227 // given exit code. This is a helper function for the
228 // ExitStatusPredicateTest test suite.
229 static int NormalExitStatus(int exit_code) {
230  pid_t child_pid = fork();
231  if (child_pid == 0) {
232  _exit(exit_code);
233  }
234  int status;
235  waitpid(child_pid, &status, 0);
236  return status;
237 }
238 
239 // Returns the exit status of a process that raises a given signal.
240 // If the signal does not cause the process to die, then it returns
241 // instead the exit status of a process that exits normally with exit
242 // code 1. This is a helper function for the ExitStatusPredicateTest
243 // test suite.
244 static int KilledExitStatus(int signum) {
245  pid_t child_pid = fork();
246  if (child_pid == 0) {
247  raise(signum);
248  _exit(1);
249  }
250  int status;
251  waitpid(child_pid, &status, 0);
252  return status;
253 }
254 
255 // Tests the ExitedWithCode predicate.
256 TEST(ExitStatusPredicateTest, ExitedWithCode) {
257  const int status0 = NormalExitStatus(0);
258  const int status1 = NormalExitStatus(1);
259  const int status42 = NormalExitStatus(42);
260  const testing::ExitedWithCode pred0(0);
261  const testing::ExitedWithCode pred1(1);
262  const testing::ExitedWithCode pred42(42);
263  EXPECT_PRED1(pred0, status0);
264  EXPECT_PRED1(pred1, status1);
265  EXPECT_PRED1(pred42, status42);
266  EXPECT_FALSE(pred0(status1));
267  EXPECT_FALSE(pred42(status0));
268  EXPECT_FALSE(pred1(status42));
269 }
270 
271 // Tests the KilledBySignal predicate.
272 TEST(ExitStatusPredicateTest, KilledBySignal) {
273  const int status_segv = KilledExitStatus(SIGSEGV);
274  const int status_kill = KilledExitStatus(SIGKILL);
275  const testing::KilledBySignal pred_segv(SIGSEGV);
276  const testing::KilledBySignal pred_kill(SIGKILL);
277  EXPECT_PRED1(pred_segv, status_segv);
278  EXPECT_PRED1(pred_kill, status_kill);
279  EXPECT_FALSE(pred_segv(status_kill));
280  EXPECT_FALSE(pred_kill(status_segv));
281 }
282 
283 # endif // GTEST_OS_WINDOWS
284 
285 // Tests that the death test macros expand to code which may or may not
286 // be followed by operator<<, and that in either case the complete text
287 // comprises only a single C++ statement.
288 TEST_F(TestForDeathTest, SingleStatement) {
289  if (AlwaysFalse())
290  // This would fail if executed; this is a compilation test only
291  ASSERT_DEATH(return, "");
292 
293  if (AlwaysTrue())
294  EXPECT_DEATH(_exit(1), "");
295  else
296  // This empty "else" branch is meant to ensure that EXPECT_DEATH
297  // doesn't expand into an "if" statement without an "else"
298  ;
299 
300  if (AlwaysFalse())
301  ASSERT_DEATH(return, "") << "did not die";
302 
303  if (AlwaysFalse())
304  ;
305  else
306  EXPECT_DEATH(_exit(1), "") << 1 << 2 << 3;
307 }
308 
309 void DieWithEmbeddedNul() {
310  fprintf(stderr, "Hello%cmy null world.\n", '\0');
311  fflush(stderr);
312  _exit(1);
313 }
314 
315 # if GTEST_USES_PCRE
316 // Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
317 // message has a NUL character in it.
318 TEST_F(TestForDeathTest, EmbeddedNulInMessage) {
319  // TODO(wan@google.com): <regex.h> doesn't support matching strings
320  // with embedded NUL characters - find a way to workaround it.
321  EXPECT_DEATH(DieWithEmbeddedNul(), "my null world");
322  ASSERT_DEATH(DieWithEmbeddedNul(), "my null world");
323 }
324 # endif // GTEST_USES_PCRE
325 
326 // Tests that death test macros expand to code which interacts well with switch
327 // statements.
328 TEST_F(TestForDeathTest, SwitchStatement) {
329  // Microsoft compiler usually complains about switch statements without
330  // case labels. We suppress that warning for this test.
332 
333  switch (0)
334  default:
335  ASSERT_DEATH(_exit(1), "") << "exit in default switch handler";
336 
337  switch (0)
338  case 0:
339  EXPECT_DEATH(_exit(1), "") << "exit in switch case";
340 
342 }
343 
344 // Tests that a static member function can be used in a "fast" style
345 // death test.
346 TEST_F(TestForDeathTest, StaticMemberFunctionFastStyle) {
347  testing::GTEST_FLAG(death_test_style) = "fast";
348  ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
349 }
350 
351 // Tests that a method of the test fixture can be used in a "fast"
352 // style death test.
353 TEST_F(TestForDeathTest, MemberFunctionFastStyle) {
354  testing::GTEST_FLAG(death_test_style) = "fast";
355  should_die_ = true;
356  EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
357 }
358 
359 void ChangeToRootDir() { posix::ChDir(GTEST_PATH_SEP_); }
360 
361 // Tests that death tests work even if the current directory has been
362 // changed.
363 TEST_F(TestForDeathTest, FastDeathTestInChangedDir) {
364  testing::GTEST_FLAG(death_test_style) = "fast";
365 
366  ChangeToRootDir();
367  EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
368 
369  ChangeToRootDir();
370  ASSERT_DEATH(_exit(1), "");
371 }
372 
373 # if GTEST_OS_LINUX
374 void SigprofAction(int, siginfo_t*, void*) { /* no op */ }
375 
376 // Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms).
377 void SetSigprofActionAndTimer() {
378  struct itimerval timer;
379  timer.it_interval.tv_sec = 0;
380  timer.it_interval.tv_usec = 1;
381  timer.it_value = timer.it_interval;
382  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
383  struct sigaction signal_action;
384  memset(&signal_action, 0, sizeof(signal_action));
385  sigemptyset(&signal_action.sa_mask);
386  signal_action.sa_sigaction = SigprofAction;
387  signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
388  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, NULL));
389 }
390 
391 // Disables ITIMER_PROF timer and ignores SIGPROF signal.
392 void DisableSigprofActionAndTimer(struct sigaction* old_signal_action) {
393  struct itimerval timer;
394  timer.it_interval.tv_sec = 0;
395  timer.it_interval.tv_usec = 0;
396  timer.it_value = timer.it_interval;
397  ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
398  struct sigaction signal_action;
399  memset(&signal_action, 0, sizeof(signal_action));
400  sigemptyset(&signal_action.sa_mask);
401  signal_action.sa_handler = SIG_IGN;
402  ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, old_signal_action));
403 }
404 
405 // Tests that death tests work when SIGPROF handler and timer are set.
406 TEST_F(TestForDeathTest, FastSigprofActionSet) {
407  testing::GTEST_FLAG(death_test_style) = "fast";
408  SetSigprofActionAndTimer();
409  EXPECT_DEATH(_exit(1), "");
410  struct sigaction old_signal_action;
411  DisableSigprofActionAndTimer(&old_signal_action);
412  EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
413 }
414 
415 TEST_F(TestForDeathTest, ThreadSafeSigprofActionSet) {
416  testing::GTEST_FLAG(death_test_style) = "threadsafe";
417  SetSigprofActionAndTimer();
418  EXPECT_DEATH(_exit(1), "");
419  struct sigaction old_signal_action;
420  DisableSigprofActionAndTimer(&old_signal_action);
421  EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
422 }
423 # endif // GTEST_OS_LINUX
424 
425 // Repeats a representative sample of death tests in the "threadsafe" style:
426 
427 TEST_F(TestForDeathTest, StaticMemberFunctionThreadsafeStyle) {
428  testing::GTEST_FLAG(death_test_style) = "threadsafe";
429  ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
430 }
431 
432 TEST_F(TestForDeathTest, MemberFunctionThreadsafeStyle) {
433  testing::GTEST_FLAG(death_test_style) = "threadsafe";
434  should_die_ = true;
435  EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
436 }
437 
438 TEST_F(TestForDeathTest, ThreadsafeDeathTestInLoop) {
439  testing::GTEST_FLAG(death_test_style) = "threadsafe";
440 
441  for (int i = 0; i < 3; ++i)
442  EXPECT_EXIT(_exit(i), testing::ExitedWithCode(i), "") << ": i = " << i;
443 }
444 
445 TEST_F(TestForDeathTest, ThreadsafeDeathTestInChangedDir) {
446  testing::GTEST_FLAG(death_test_style) = "threadsafe";
447 
448  ChangeToRootDir();
449  EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
450 
451  ChangeToRootDir();
452  ASSERT_DEATH(_exit(1), "");
453 }
454 
455 TEST_F(TestForDeathTest, MixedStyles) {
456  testing::GTEST_FLAG(death_test_style) = "threadsafe";
457  EXPECT_DEATH(_exit(1), "");
458  testing::GTEST_FLAG(death_test_style) = "fast";
459  EXPECT_DEATH(_exit(1), "");
460 }
461 
462 # if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
463 
464 namespace {
465 
466 bool pthread_flag;
467 
468 void SetPthreadFlag() {
469  pthread_flag = true;
470 }
471 
472 } // namespace
473 
474 TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) {
475  if (!testing::GTEST_FLAG(death_test_use_fork)) {
476  testing::GTEST_FLAG(death_test_style) = "threadsafe";
477  pthread_flag = false;
478  ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, NULL, NULL));
479  ASSERT_DEATH(_exit(1), "");
480  ASSERT_FALSE(pthread_flag);
481  }
482 }
483 
484 # endif // GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
485 
486 // Tests that a method of another class can be used in a death test.
487 TEST_F(TestForDeathTest, MethodOfAnotherClass) {
488  const MayDie x(true);
489  ASSERT_DEATH(x.MemberFunction(), "MayDie\\:\\:MemberFunction");
490 }
491 
492 // Tests that a global function can be used in a death test.
493 TEST_F(TestForDeathTest, GlobalFunction) {
494  EXPECT_DEATH(GlobalFunction(), "GlobalFunction");
495 }
496 
497 // Tests that any value convertible to an RE works as a second
498 // argument to EXPECT_DEATH.
499 TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) {
500  static const char regex_c_str[] = "GlobalFunction";
501  EXPECT_DEATH(GlobalFunction(), regex_c_str);
502 
503  const testing::internal::RE regex(regex_c_str);
504  EXPECT_DEATH(GlobalFunction(), regex);
505 
506 # if GTEST_HAS_GLOBAL_STRING
507 
508  const string regex_str(regex_c_str);
509  EXPECT_DEATH(GlobalFunction(), regex_str);
510 
511 # endif // GTEST_HAS_GLOBAL_STRING
512 
513 # if !GTEST_USES_PCRE
514 
515  const ::std::string regex_std_str(regex_c_str);
516  EXPECT_DEATH(GlobalFunction(), regex_std_str);
517 
518 # endif // !GTEST_USES_PCRE
519 }
520 
521 // Tests that a non-void function can be used in a death test.
522 TEST_F(TestForDeathTest, NonVoidFunction) {
523  ASSERT_DEATH(NonVoidFunction(), "NonVoidFunction");
524 }
525 
526 // Tests that functions that take parameter(s) can be used in a death test.
527 TEST_F(TestForDeathTest, FunctionWithParameter) {
528  EXPECT_DEATH(DieIf(true), "DieIf\\(\\)");
529  EXPECT_DEATH(DieIfLessThan(2, 3), "DieIfLessThan");
530 }
531 
532 // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
533 TEST_F(TestForDeathTest, OutsideFixture) {
534  DeathTestSubroutine();
535 }
536 
537 // Tests that death tests can be done inside a loop.
538 TEST_F(TestForDeathTest, InsideLoop) {
539  for (int i = 0; i < 5; i++) {
540  EXPECT_DEATH(DieIfLessThan(-1, i), "DieIfLessThan") << "where i == " << i;
541  }
542 }
543 
544 // Tests that a compound statement can be used in a death test.
545 TEST_F(TestForDeathTest, CompoundStatement) {
546  EXPECT_DEATH({ // NOLINT
547  const int x = 2;
548  const int y = x + 1;
549  DieIfLessThan(x, y);
550  },
551  "DieIfLessThan");
552 }
553 
554 // Tests that code that doesn't die causes a death test to fail.
555 TEST_F(TestForDeathTest, DoesNotDie) {
556  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(DieIf(false), "DieIf"),
557  "failed to die");
558 }
559 
560 // Tests that a death test fails when the error message isn't expected.
561 TEST_F(TestForDeathTest, ErrorMessageMismatch) {
562  EXPECT_NONFATAL_FAILURE({ // NOLINT
563  EXPECT_DEATH(DieIf(true), "DieIfLessThan") << "End of death test message.";
564  }, "died but not with expected error");
565 }
566 
567 // On exit, *aborted will be true iff the EXPECT_DEATH() statement
568 // aborted the function.
569 void ExpectDeathTestHelper(bool* aborted) {
570  *aborted = true;
571  EXPECT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
572  *aborted = false;
573 }
574 
575 // Tests that EXPECT_DEATH doesn't abort the test on failure.
576 TEST_F(TestForDeathTest, EXPECT_DEATH) {
577  bool aborted = true;
578  EXPECT_NONFATAL_FAILURE(ExpectDeathTestHelper(&aborted),
579  "failed to die");
580  EXPECT_FALSE(aborted);
581 }
582 
583 // Tests that ASSERT_DEATH does abort the test on failure.
584 TEST_F(TestForDeathTest, ASSERT_DEATH) {
585  static bool aborted;
586  EXPECT_FATAL_FAILURE({ // NOLINT
587  aborted = true;
588  ASSERT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
589  aborted = false;
590  }, "failed to die");
591  EXPECT_TRUE(aborted);
592 }
593 
594 // Tests that EXPECT_DEATH evaluates the arguments exactly once.
595 TEST_F(TestForDeathTest, SingleEvaluation) {
596  int x = 3;
597  EXPECT_DEATH(DieIf((++x) == 4), "DieIf");
598 
599  const char* regex = "DieIf";
600  const char* regex_save = regex;
601  EXPECT_DEATH(DieIfLessThan(3, 4), regex++);
602  EXPECT_EQ(regex_save + 1, regex);
603 }
604 
605 // Tests that run-away death tests are reported as failures.
606 TEST_F(TestForDeathTest, RunawayIsFailure) {
607  EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(static_cast<void>(0), "Foo"),
608  "failed to die.");
609 }
610 
611 // Tests that death tests report executing 'return' in the statement as
612 // failure.
613 TEST_F(TestForDeathTest, ReturnIsFailure) {
614  EXPECT_FATAL_FAILURE(ASSERT_DEATH(return, "Bar"),
615  "illegal return in test statement.");
616 }
617 
618 // Tests that EXPECT_DEBUG_DEATH works as expected, that is, you can stream a
619 // message to it, and in debug mode it:
620 // 1. Asserts on death.
621 // 2. Has no side effect.
622 //
623 // And in opt mode, it:
624 // 1. Has side effects but does not assert.
625 TEST_F(TestForDeathTest, TestExpectDebugDeath) {
626  int sideeffect = 0;
627 
628  EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
629  << "Must accept a streamed message";
630 
631 # ifdef NDEBUG
632 
633  // Checks that the assignment occurs in opt mode (sideeffect).
634  EXPECT_EQ(12, sideeffect);
635 
636 # else
637 
638  // Checks that the assignment does not occur in dbg mode (no sideeffect).
639  EXPECT_EQ(0, sideeffect);
640 
641 # endif
642 }
643 
644 // Tests that ASSERT_DEBUG_DEATH works as expected, that is, you can stream a
645 // message to it, and in debug mode it:
646 // 1. Asserts on death.
647 // 2. Has no side effect.
648 //
649 // And in opt mode, it:
650 // 1. Has side effects but does not assert.
651 TEST_F(TestForDeathTest, TestAssertDebugDeath) {
652  int sideeffect = 0;
653 
654  ASSERT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
655  << "Must accept a streamed message";
656 
657 # ifdef NDEBUG
658 
659  // Checks that the assignment occurs in opt mode (sideeffect).
660  EXPECT_EQ(12, sideeffect);
661 
662 # else
663 
664  // Checks that the assignment does not occur in dbg mode (no sideeffect).
665  EXPECT_EQ(0, sideeffect);
666 
667 # endif
668 }
669 
670 # ifndef NDEBUG
671 
672 void ExpectDebugDeathHelper(bool* aborted) {
673  *aborted = true;
674  EXPECT_DEBUG_DEATH(return, "") << "This is expected to fail.";
675  *aborted = false;
676 }
677 
678 # if GTEST_OS_WINDOWS
679 TEST(PopUpDeathTest, DoesNotShowPopUpOnAbort) {
680  printf("This test should be considered failing if it shows "
681  "any pop-up dialogs.\n");
682  fflush(stdout);
683 
684  EXPECT_DEATH({
685  testing::GTEST_FLAG(catch_exceptions) = false;
686  abort();
687  }, "");
688 }
689 # endif // GTEST_OS_WINDOWS
690 
691 // Tests that EXPECT_DEBUG_DEATH in debug mode does not abort
692 // the function.
693 TEST_F(TestForDeathTest, ExpectDebugDeathDoesNotAbort) {
694  bool aborted = true;
695  EXPECT_NONFATAL_FAILURE(ExpectDebugDeathHelper(&aborted), "");
696  EXPECT_FALSE(aborted);
697 }
698 
699 void AssertDebugDeathHelper(bool* aborted) {
700  *aborted = true;
701  GTEST_LOG_(INFO) << "Before ASSERT_DEBUG_DEATH";
702  ASSERT_DEBUG_DEATH(GTEST_LOG_(INFO) << "In ASSERT_DEBUG_DEATH"; return, "")
703  << "This is expected to fail.";
704  GTEST_LOG_(INFO) << "After ASSERT_DEBUG_DEATH";
705  *aborted = false;
706 }
707 
708 // Tests that ASSERT_DEBUG_DEATH in debug mode aborts the function on
709 // failure.
710 TEST_F(TestForDeathTest, AssertDebugDeathAborts) {
711  static bool aborted;
712  aborted = false;
713  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
714  EXPECT_TRUE(aborted);
715 }
716 
717 TEST_F(TestForDeathTest, AssertDebugDeathAborts2) {
718  static bool aborted;
719  aborted = false;
720  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
721  EXPECT_TRUE(aborted);
722 }
723 
724 TEST_F(TestForDeathTest, AssertDebugDeathAborts3) {
725  static bool aborted;
726  aborted = false;
727  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
728  EXPECT_TRUE(aborted);
729 }
730 
731 TEST_F(TestForDeathTest, AssertDebugDeathAborts4) {
732  static bool aborted;
733  aborted = false;
734  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
735  EXPECT_TRUE(aborted);
736 }
737 
738 TEST_F(TestForDeathTest, AssertDebugDeathAborts5) {
739  static bool aborted;
740  aborted = false;
741  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
742  EXPECT_TRUE(aborted);
743 }
744 
745 TEST_F(TestForDeathTest, AssertDebugDeathAborts6) {
746  static bool aborted;
747  aborted = false;
748  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
749  EXPECT_TRUE(aborted);
750 }
751 
752 TEST_F(TestForDeathTest, AssertDebugDeathAborts7) {
753  static bool aborted;
754  aborted = false;
755  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
756  EXPECT_TRUE(aborted);
757 }
758 
759 TEST_F(TestForDeathTest, AssertDebugDeathAborts8) {
760  static bool aborted;
761  aborted = false;
762  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
763  EXPECT_TRUE(aborted);
764 }
765 
766 TEST_F(TestForDeathTest, AssertDebugDeathAborts9) {
767  static bool aborted;
768  aborted = false;
769  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
770  EXPECT_TRUE(aborted);
771 }
772 
773 TEST_F(TestForDeathTest, AssertDebugDeathAborts10) {
774  static bool aborted;
775  aborted = false;
776  EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
777  EXPECT_TRUE(aborted);
778 }
779 
780 # endif // _NDEBUG
781 
782 // Tests the *_EXIT family of macros, using a variety of predicates.
783 static void TestExitMacros() {
784  EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
785  ASSERT_EXIT(_exit(42), testing::ExitedWithCode(42), "");
786 
787 # if GTEST_OS_WINDOWS
788 
789  // Of all signals effects on the process exit code, only those of SIGABRT
790  // are documented on Windows.
791  // See http://msdn.microsoft.com/en-us/library/dwwzkt4c(VS.71).aspx.
792  EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), "") << "b_ar";
793 
794 # else
795 
796  EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo";
797  ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar";
798 
799  EXPECT_FATAL_FAILURE({ // NOLINT
800  ASSERT_EXIT(_exit(0), testing::KilledBySignal(SIGSEGV), "")
801  << "This failure is expected, too.";
802  }, "This failure is expected, too.");
803 
804 # endif // GTEST_OS_WINDOWS
805 
806  EXPECT_NONFATAL_FAILURE({ // NOLINT
807  EXPECT_EXIT(raise(SIGSEGV), testing::ExitedWithCode(0), "")
808  << "This failure is expected.";
809  }, "This failure is expected.");
810 }
811 
812 TEST_F(TestForDeathTest, ExitMacros) {
813  TestExitMacros();
814 }
815 
816 TEST_F(TestForDeathTest, ExitMacrosUsingFork) {
817  testing::GTEST_FLAG(death_test_use_fork) = true;
818  TestExitMacros();
819 }
820 
821 TEST_F(TestForDeathTest, InvalidStyle) {
822  testing::GTEST_FLAG(death_test_style) = "rococo";
823  EXPECT_NONFATAL_FAILURE({ // NOLINT
824  EXPECT_DEATH(_exit(0), "") << "This failure is expected.";
825  }, "This failure is expected.");
826 }
827 
828 TEST_F(TestForDeathTest, DeathTestFailedOutput) {
829  testing::GTEST_FLAG(death_test_style) = "fast";
831  EXPECT_DEATH(DieWithMessage("death\n"),
832  "expected message"),
833  "Actual msg:\n"
834  "[ DEATH ] death\n");
835 }
836 
837 TEST_F(TestForDeathTest, DeathTestUnexpectedReturnOutput) {
838  testing::GTEST_FLAG(death_test_style) = "fast";
840  EXPECT_DEATH({
841  fprintf(stderr, "returning\n");
842  fflush(stderr);
843  return;
844  }, ""),
845  " Result: illegal return in test statement.\n"
846  " Error msg:\n"
847  "[ DEATH ] returning\n");
848 }
849 
850 TEST_F(TestForDeathTest, DeathTestBadExitCodeOutput) {
851  testing::GTEST_FLAG(death_test_style) = "fast";
853  EXPECT_EXIT(DieWithMessage("exiting with rc 1\n"),
854  testing::ExitedWithCode(3),
855  "expected message"),
856  " Result: died but not with expected exit code:\n"
857  " Exited with exit status 1\n"
858  "Actual msg:\n"
859  "[ DEATH ] exiting with rc 1\n");
860 }
861 
862 TEST_F(TestForDeathTest, DeathTestMultiLineMatchFail) {
863  testing::GTEST_FLAG(death_test_style) = "fast";
865  EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
866  "line 1\nxyz\nline 3\n"),
867  "Actual msg:\n"
868  "[ DEATH ] line 1\n"
869  "[ DEATH ] line 2\n"
870  "[ DEATH ] line 3\n");
871 }
872 
873 TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) {
874  testing::GTEST_FLAG(death_test_style) = "fast";
875  EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
876  "line 1\nline 2\nline 3\n");
877 }
878 
879 // A DeathTestFactory that returns MockDeathTests.
880 class MockDeathTestFactory : public DeathTestFactory {
881  public:
882  MockDeathTestFactory();
883  virtual bool Create(const char* statement,
884  const ::testing::internal::RE* regex,
885  const char* file, int line, DeathTest** test);
886 
887  // Sets the parameters for subsequent calls to Create.
888  void SetParameters(bool create, DeathTest::TestRole role,
889  int status, bool passed);
890 
891  // Accessors.
892  int AssumeRoleCalls() const { return assume_role_calls_; }
893  int WaitCalls() const { return wait_calls_; }
894  size_t PassedCalls() const { return passed_args_.size(); }
895  bool PassedArgument(int n) const { return passed_args_[n]; }
896  size_t AbortCalls() const { return abort_args_.size(); }
897  DeathTest::AbortReason AbortArgument(int n) const {
898  return abort_args_[n];
899  }
900  bool TestDeleted() const { return test_deleted_; }
901 
902  private:
903  friend class MockDeathTest;
904  // If true, Create will return a MockDeathTest; otherwise it returns
905  // NULL.
906  bool create_;
907  // The value a MockDeathTest will return from its AssumeRole method.
908  DeathTest::TestRole role_;
909  // The value a MockDeathTest will return from its Wait method.
910  int status_;
911  // The value a MockDeathTest will return from its Passed method.
912  bool passed_;
913 
914  // Number of times AssumeRole was called.
915  int assume_role_calls_;
916  // Number of times Wait was called.
917  int wait_calls_;
918  // The arguments to the calls to Passed since the last call to
919  // SetParameters.
920  std::vector<bool> passed_args_;
921  // The arguments to the calls to Abort since the last call to
922  // SetParameters.
923  std::vector<DeathTest::AbortReason> abort_args_;
924  // True if the last MockDeathTest returned by Create has been
925  // deleted.
926  bool test_deleted_;
927 };
928 
929 
930 // A DeathTest implementation useful in testing. It returns values set
931 // at its creation from its various inherited DeathTest methods, and
932 // reports calls to those methods to its parent MockDeathTestFactory
933 // object.
934 class MockDeathTest : public DeathTest {
935  public:
936  MockDeathTest(MockDeathTestFactory *parent,
937  TestRole role, int status, bool passed) :
938  parent_(parent), role_(role), status_(status), passed_(passed) {
939  }
940  virtual ~MockDeathTest() {
941  parent_->test_deleted_ = true;
942  }
943  virtual TestRole AssumeRole() {
944  ++parent_->assume_role_calls_;
945  return role_;
946  }
947  virtual int Wait() {
948  ++parent_->wait_calls_;
949  return status_;
950  }
951  virtual bool Passed(bool exit_status_ok) {
952  parent_->passed_args_.push_back(exit_status_ok);
953  return passed_;
954  }
955  virtual void Abort(AbortReason reason) {
956  parent_->abort_args_.push_back(reason);
957  }
958 
959  private:
960  MockDeathTestFactory* const parent_;
961  const TestRole role_;
962  const int status_;
963  const bool passed_;
964 };
965 
966 
967 // MockDeathTestFactory constructor.
968 MockDeathTestFactory::MockDeathTestFactory()
969  : create_(true),
970  role_(DeathTest::OVERSEE_TEST),
971  status_(0),
972  passed_(true),
973  assume_role_calls_(0),
974  wait_calls_(0),
975  passed_args_(),
976  abort_args_() {
977 }
978 
979 
980 // Sets the parameters for subsequent calls to Create.
981 void MockDeathTestFactory::SetParameters(bool create,
982  DeathTest::TestRole role,
983  int status, bool passed) {
984  create_ = create;
985  role_ = role;
986  status_ = status;
987  passed_ = passed;
988 
989  assume_role_calls_ = 0;
990  wait_calls_ = 0;
991  passed_args_.clear();
992  abort_args_.clear();
993 }
994 
995 
996 // Sets test to NULL (if create_ is false) or to the address of a new
997 // MockDeathTest object with parameters taken from the last call
998 // to SetParameters (if create_ is true). Always returns true.
999 bool MockDeathTestFactory::Create(const char* /*statement*/,
1000  const ::testing::internal::RE* /*regex*/,
1001  const char* /*file*/,
1002  int /*line*/,
1003  DeathTest** test) {
1004  test_deleted_ = false;
1005  if (create_) {
1006  *test = new MockDeathTest(this, role_, status_, passed_);
1007  } else {
1008  *test = NULL;
1009  }
1010  return true;
1011 }
1012 
1013 // A test fixture for testing the logic of the GTEST_DEATH_TEST_ macro.
1014 // It installs a MockDeathTestFactory that is used for the duration
1015 // of the test case.
1016 class MacroLogicDeathTest : public testing::Test {
1017  protected:
1018  static testing::internal::ReplaceDeathTestFactory* replacer_;
1019  static MockDeathTestFactory* factory_;
1020 
1021  static void SetUpTestCase() {
1022  factory_ = new MockDeathTestFactory;
1023  replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_);
1024  }
1025 
1026  static void TearDownTestCase() {
1027  delete replacer_;
1028  replacer_ = NULL;
1029  delete factory_;
1030  factory_ = NULL;
1031  }
1032 
1033  // Runs a death test that breaks the rules by returning. Such a death
1034  // test cannot be run directly from a test routine that uses a
1035  // MockDeathTest, or the remainder of the routine will not be executed.
1036  static void RunReturningDeathTest(bool* flag) {
1037  ASSERT_DEATH({ // NOLINT
1038  *flag = true;
1039  return;
1040  }, "");
1041  }
1042 };
1043 
1044 testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_
1045  = NULL;
1046 MockDeathTestFactory* MacroLogicDeathTest::factory_ = NULL;
1047 
1048 
1049 // Test that nothing happens when the factory doesn't return a DeathTest:
1050 TEST_F(MacroLogicDeathTest, NothingHappens) {
1051  bool flag = false;
1052  factory_->SetParameters(false, DeathTest::OVERSEE_TEST, 0, true);
1053  EXPECT_DEATH(flag = true, "");
1054  EXPECT_FALSE(flag);
1055  EXPECT_EQ(0, factory_->AssumeRoleCalls());
1056  EXPECT_EQ(0, factory_->WaitCalls());
1057  EXPECT_EQ(0U, factory_->PassedCalls());
1058  EXPECT_EQ(0U, factory_->AbortCalls());
1059  EXPECT_FALSE(factory_->TestDeleted());
1060 }
1061 
1062 // Test that the parent process doesn't run the death test code,
1063 // and that the Passed method returns false when the (simulated)
1064 // child process exits with status 0:
1065 TEST_F(MacroLogicDeathTest, ChildExitsSuccessfully) {
1066  bool flag = false;
1067  factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 0, true);
1068  EXPECT_DEATH(flag = true, "");
1069  EXPECT_FALSE(flag);
1070  EXPECT_EQ(1, factory_->AssumeRoleCalls());
1071  EXPECT_EQ(1, factory_->WaitCalls());
1072  ASSERT_EQ(1U, factory_->PassedCalls());
1073  EXPECT_FALSE(factory_->PassedArgument(0));
1074  EXPECT_EQ(0U, factory_->AbortCalls());
1075  EXPECT_TRUE(factory_->TestDeleted());
1076 }
1077 
1078 // Tests that the Passed method was given the argument "true" when
1079 // the (simulated) child process exits with status 1:
1080 TEST_F(MacroLogicDeathTest, ChildExitsUnsuccessfully) {
1081  bool flag = false;
1082  factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 1, true);
1083  EXPECT_DEATH(flag = true, "");
1084  EXPECT_FALSE(flag);
1085  EXPECT_EQ(1, factory_->AssumeRoleCalls());
1086  EXPECT_EQ(1, factory_->WaitCalls());
1087  ASSERT_EQ(1U, factory_->PassedCalls());
1088  EXPECT_TRUE(factory_->PassedArgument(0));
1089  EXPECT_EQ(0U, factory_->AbortCalls());
1090  EXPECT_TRUE(factory_->TestDeleted());
1091 }
1092 
1093 // Tests that the (simulated) child process executes the death test
1094 // code, and is aborted with the correct AbortReason if it
1095 // executes a return statement.
1096 TEST_F(MacroLogicDeathTest, ChildPerformsReturn) {
1097  bool flag = false;
1098  factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
1099  RunReturningDeathTest(&flag);
1100  EXPECT_TRUE(flag);
1101  EXPECT_EQ(1, factory_->AssumeRoleCalls());
1102  EXPECT_EQ(0, factory_->WaitCalls());
1103  EXPECT_EQ(0U, factory_->PassedCalls());
1104  EXPECT_EQ(1U, factory_->AbortCalls());
1105  EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
1106  factory_->AbortArgument(0));
1107  EXPECT_TRUE(factory_->TestDeleted());
1108 }
1109 
1110 // Tests that the (simulated) child process is aborted with the
1111 // correct AbortReason if it does not die.
1112 TEST_F(MacroLogicDeathTest, ChildDoesNotDie) {
1113  bool flag = false;
1114  factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
1115  EXPECT_DEATH(flag = true, "");
1116  EXPECT_TRUE(flag);
1117  EXPECT_EQ(1, factory_->AssumeRoleCalls());
1118  EXPECT_EQ(0, factory_->WaitCalls());
1119  EXPECT_EQ(0U, factory_->PassedCalls());
1120  // This time there are two calls to Abort: one since the test didn't
1121  // die, and another from the ReturnSentinel when it's destroyed. The
1122  // sentinel normally isn't destroyed if a test doesn't die, since
1123  // _exit(2) is called in that case by ForkingDeathTest, but not by
1124  // our MockDeathTest.
1125  ASSERT_EQ(2U, factory_->AbortCalls());
1126  EXPECT_EQ(DeathTest::TEST_DID_NOT_DIE,
1127  factory_->AbortArgument(0));
1128  EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
1129  factory_->AbortArgument(1));
1130  EXPECT_TRUE(factory_->TestDeleted());
1131 }
1132 
1133 // Tests that a successful death test does not register a successful
1134 // test part.
1135 TEST(SuccessRegistrationDeathTest, NoSuccessPart) {
1136  EXPECT_DEATH(_exit(1), "");
1137  EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
1138 }
1139 
1140 TEST(StreamingAssertionsDeathTest, DeathTest) {
1141  EXPECT_DEATH(_exit(1), "") << "unexpected failure";
1142  ASSERT_DEATH(_exit(1), "") << "unexpected failure";
1143  EXPECT_NONFATAL_FAILURE({ // NOLINT
1144  EXPECT_DEATH(_exit(0), "") << "expected failure";
1145  }, "expected failure");
1146  EXPECT_FATAL_FAILURE({ // NOLINT
1147  ASSERT_DEATH(_exit(0), "") << "expected failure";
1148  }, "expected failure");
1149 }
1150 
1151 // Tests that GetLastErrnoDescription returns an empty string when the
1152 // last error is 0 and non-empty string when it is non-zero.
1153 TEST(GetLastErrnoDescription, GetLastErrnoDescriptionWorks) {
1154  errno = ENOENT;
1155  EXPECT_STRNE("", GetLastErrnoDescription().c_str());
1156  errno = 0;
1157  EXPECT_STREQ("", GetLastErrnoDescription().c_str());
1158 }
1159 
1160 # if GTEST_OS_WINDOWS
1161 TEST(AutoHandleTest, AutoHandleWorks) {
1162  HANDLE handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
1163  ASSERT_NE(INVALID_HANDLE_VALUE, handle);
1164 
1165  // Tests that the AutoHandle is correctly initialized with a handle.
1166  testing::internal::AutoHandle auto_handle(handle);
1167  EXPECT_EQ(handle, auto_handle.Get());
1168 
1169  // Tests that Reset assigns INVALID_HANDLE_VALUE.
1170  // Note that this cannot verify whether the original handle is closed.
1171  auto_handle.Reset();
1172  EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle.Get());
1173 
1174  // Tests that Reset assigns the new handle.
1175  // Note that this cannot verify whether the original handle is closed.
1176  handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
1177  ASSERT_NE(INVALID_HANDLE_VALUE, handle);
1178  auto_handle.Reset(handle);
1179  EXPECT_EQ(handle, auto_handle.Get());
1180 
1181  // Tests that AutoHandle contains INVALID_HANDLE_VALUE by default.
1182  testing::internal::AutoHandle auto_handle2;
1183  EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle2.Get());
1184 }
1185 # endif // GTEST_OS_WINDOWS
1186 
1187 # if GTEST_OS_WINDOWS
1188 typedef unsigned __int64 BiggestParsable;
1189 typedef signed __int64 BiggestSignedParsable;
1190 # else
1191 typedef unsigned long long BiggestParsable;
1192 typedef signed long long BiggestSignedParsable;
1193 # endif // GTEST_OS_WINDOWS
1194 
1195 // We cannot use std::numeric_limits<T>::max() as it clashes with the
1196 // max() macro defined by <windows.h>.
1197 const BiggestParsable kBiggestParsableMax = ULLONG_MAX;
1198 const BiggestSignedParsable kBiggestSignedParsableMax = LLONG_MAX;
1199 
1200 TEST(ParseNaturalNumberTest, RejectsInvalidFormat) {
1201  BiggestParsable result = 0;
1202 
1203  // Rejects non-numbers.
1204  EXPECT_FALSE(ParseNaturalNumber("non-number string", &result));
1205 
1206  // Rejects numbers with whitespace prefix.
1207  EXPECT_FALSE(ParseNaturalNumber(" 123", &result));
1208 
1209  // Rejects negative numbers.
1210  EXPECT_FALSE(ParseNaturalNumber("-123", &result));
1211 
1212  // Rejects numbers starting with a plus sign.
1213  EXPECT_FALSE(ParseNaturalNumber("+123", &result));
1214  errno = 0;
1215 }
1216 
1217 TEST(ParseNaturalNumberTest, RejectsOverflownNumbers) {
1218  BiggestParsable result = 0;
1219 
1220  EXPECT_FALSE(ParseNaturalNumber("99999999999999999999999", &result));
1221 
1222  signed char char_result = 0;
1223  EXPECT_FALSE(ParseNaturalNumber("200", &char_result));
1224  errno = 0;
1225 }
1226 
1227 TEST(ParseNaturalNumberTest, AcceptsValidNumbers) {
1228  BiggestParsable result = 0;
1229 
1230  result = 0;
1231  ASSERT_TRUE(ParseNaturalNumber("123", &result));
1232  EXPECT_EQ(123U, result);
1233 
1234  // Check 0 as an edge case.
1235  result = 1;
1236  ASSERT_TRUE(ParseNaturalNumber("0", &result));
1237  EXPECT_EQ(0U, result);
1238 
1239  result = 1;
1240  ASSERT_TRUE(ParseNaturalNumber("00000", &result));
1241  EXPECT_EQ(0U, result);
1242 }
1243 
1244 TEST(ParseNaturalNumberTest, AcceptsTypeLimits) {
1245  Message msg;
1246  msg << kBiggestParsableMax;
1247 
1248  BiggestParsable result = 0;
1249  EXPECT_TRUE(ParseNaturalNumber(msg.GetString(), &result));
1250  EXPECT_EQ(kBiggestParsableMax, result);
1251 
1252  Message msg2;
1253  msg2 << kBiggestSignedParsableMax;
1254 
1255  BiggestSignedParsable signed_result = 0;
1256  EXPECT_TRUE(ParseNaturalNumber(msg2.GetString(), &signed_result));
1257  EXPECT_EQ(kBiggestSignedParsableMax, signed_result);
1258 
1259  Message msg3;
1260  msg3 << INT_MAX;
1261 
1262  int int_result = 0;
1263  EXPECT_TRUE(ParseNaturalNumber(msg3.GetString(), &int_result));
1264  EXPECT_EQ(INT_MAX, int_result);
1265 
1266  Message msg4;
1267  msg4 << UINT_MAX;
1268 
1269  unsigned int uint_result = 0;
1270  EXPECT_TRUE(ParseNaturalNumber(msg4.GetString(), &uint_result));
1271  EXPECT_EQ(UINT_MAX, uint_result);
1272 }
1273 
1274 TEST(ParseNaturalNumberTest, WorksForShorterIntegers) {
1275  short short_result = 0;
1276  ASSERT_TRUE(ParseNaturalNumber("123", &short_result));
1277  EXPECT_EQ(123, short_result);
1278 
1279  signed char char_result = 0;
1280  ASSERT_TRUE(ParseNaturalNumber("123", &char_result));
1281  EXPECT_EQ(123, char_result);
1282 }
1283 
1284 # if GTEST_OS_WINDOWS
1285 TEST(EnvironmentTest, HandleFitsIntoSizeT) {
1286  // TODO(vladl@google.com): Remove this test after this condition is verified
1287  // in a static assertion in gtest-death-test.cc in the function
1288  // GetStatusFileDescriptor.
1289  ASSERT_TRUE(sizeof(HANDLE) <= sizeof(size_t));
1290 }
1291 # endif // GTEST_OS_WINDOWS
1292 
1293 // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED trigger
1294 // failures when death tests are available on the system.
1295 TEST(ConditionalDeathMacrosDeathTest, ExpectsDeathWhenDeathTestsAvailable) {
1296  EXPECT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestExpectMacro"),
1297  "death inside CondDeathTestExpectMacro");
1298  ASSERT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestAssertMacro"),
1299  "death inside CondDeathTestAssertMacro");
1300 
1301  // Empty statement will not crash, which must trigger a failure.
1304 }
1305 
1306 TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInFastStyle) {
1307  testing::GTEST_FLAG(death_test_style) = "fast";
1308  EXPECT_FALSE(InDeathTestChild());
1309  EXPECT_DEATH({
1310  fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
1311  fflush(stderr);
1312  _exit(1);
1313  }, "Inside");
1314 }
1315 
1316 TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInThreadSafeStyle) {
1317  testing::GTEST_FLAG(death_test_style) = "threadsafe";
1318  EXPECT_FALSE(InDeathTestChild());
1319  EXPECT_DEATH({
1320  fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
1321  fflush(stderr);
1322  _exit(1);
1323  }, "Inside");
1324 }
1325 
1326 #else // !GTEST_HAS_DEATH_TEST follows
1327 
1330 
1331 // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED are still
1332 // defined but do not trigger failures when death tests are not available on
1333 // the system.
1334 TEST(ConditionalDeathMacrosTest, WarnsWhenDeathTestsNotAvailable) {
1335  // Empty statement will not crash, but that should not trigger a failure
1336  // when death tests are not supported.
1337  CaptureStderr();
1340  ASSERT_TRUE(NULL != strstr(output.c_str(),
1341  "Death tests are not supported on this platform"));
1342  ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
1343 
1344  // The streamed message should not be printed as there is no test failure.
1345  CaptureStderr();
1346  EXPECT_DEATH_IF_SUPPORTED(;, "") << "streamed message";
1347  output = GetCapturedStderr();
1348  ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
1349 
1350  CaptureStderr();
1351  ASSERT_DEATH_IF_SUPPORTED(;, ""); // NOLINT
1352  output = GetCapturedStderr();
1353  ASSERT_TRUE(NULL != strstr(output.c_str(),
1354  "Death tests are not supported on this platform"));
1355  ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
1356 
1357  CaptureStderr();
1358  ASSERT_DEATH_IF_SUPPORTED(;, "") << "streamed message"; // NOLINT
1359  output = GetCapturedStderr();
1360  ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
1361 }
1362 
1363 void FuncWithAssert(int* n) {
1364  ASSERT_DEATH_IF_SUPPORTED(return;, "");
1365  (*n)++;
1366 }
1367 
1368 // Tests that ASSERT_DEATH_IF_SUPPORTED does not return from the current
1369 // function (as ASSERT_DEATH does) if death tests are not supported.
1370 TEST(ConditionalDeathMacrosTest, AssertDeatDoesNotReturnhIfUnsupported) {
1371  int n = 0;
1372  FuncWithAssert(&n);
1373  EXPECT_EQ(1, n);
1374 }
1375 
1376 #endif // !GTEST_HAS_DEATH_TEST
1377 
1378 // Tests that the death test macros expand to code which may or may not
1379 // be followed by operator<<, and that in either case the complete text
1380 // comprises only a single C++ statement.
1381 //
1382 // The syntax should work whether death tests are available or not.
1383 TEST(ConditionalDeathMacrosSyntaxDeathTest, SingleStatement) {
1384  if (AlwaysFalse())
1385  // This would fail if executed; this is a compilation test only
1386  ASSERT_DEATH_IF_SUPPORTED(return, "");
1387 
1388  if (AlwaysTrue())
1389  EXPECT_DEATH_IF_SUPPORTED(_exit(1), "");
1390  else
1391  // This empty "else" branch is meant to ensure that EXPECT_DEATH
1392  // doesn't expand into an "if" statement without an "else"
1393  ; // NOLINT
1394 
1395  if (AlwaysFalse())
1396  ASSERT_DEATH_IF_SUPPORTED(return, "") << "did not die";
1397 
1398  if (AlwaysFalse())
1399  ; // NOLINT
1400  else
1401  EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << 1 << 2 << 3;
1402 }
1403 
1404 // Tests that conditional death test macros expand to code which interacts
1405 // well with switch statements.
1406 TEST(ConditionalDeathMacrosSyntaxDeathTest, SwitchStatement) {
1407  // Microsoft compiler usually complains about switch statements without
1408  // case labels. We suppress that warning for this test.
1410 
1411  switch (0)
1412  default:
1413  ASSERT_DEATH_IF_SUPPORTED(_exit(1), "")
1414  << "exit in default switch handler";
1415 
1416  switch (0)
1417  case 0:
1418  EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << "exit in switch case";
1419 
1421 }
1422 
1423 // Tests that a test case whose name ends with "DeathTest" works fine
1424 // on Windows.
1425 TEST(NotADeathTest, Test) {
1426  SUCCEED();
1427 }