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1 // Copyright 2005, Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 //
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"
36 #include "gtest/internal/gtest-filepath.h"
37
38 using testing::internal::AlwaysFalse;
39 using testing::internal::AlwaysTrue;
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 # include <limits> // For std::numeric_limits.
49 # endif // GTEST_OS_WINDOWS
50
51 # include <limits.h>
52 # include <signal.h>
53 # include <stdio.h>
54
55 # if GTEST_OS_LINUX
56 # include <sys/time.h>
57 # endif // GTEST_OS_LINUX
58
59 # include "gtest/gtest-spi.h"
60
61 // Indicates that this translation unit is part of Google Test's
62 // implementation. It must come before gtest-internal-inl.h is
63 // included, or there will be a compiler error. This trick is to
64 // prevent a user from accidentally including gtest-internal-inl.h in
65 // his code.
66 # define GTEST_IMPLEMENTATION_ 1
67 # include "src/gtest-internal-inl.h"
68 # undef GTEST_IMPLEMENTATION_
69
70 namespace posix = ::testing::internal::posix;
71
72 using testing::Message;
73 using testing::internal::DeathTest;
74 using testing::internal::DeathTestFactory;
75 using testing::internal::FilePath;
76 using testing::internal::GetLastErrnoDescription;
77 using testing::internal::GetUnitTestImpl;
78 using testing::internal::InDeathTestChild;
79 using testing::internal::ParseNaturalNumber;
80 using testing::internal::String;
81
82 namespace testing {
83 namespace internal {
84
85 // A helper class whose objects replace the death test factory for a
86 // single UnitTest object during their lifetimes.
87 class ReplaceDeathTestFactory {
88 public:
89 explicit ReplaceDeathTestFactory(DeathTestFactory* new_factory)
90 : unit_test_impl_(GetUnitTestImpl()) {
91 old_factory_ = unit_test_impl_->death_test_factory_.release();
92 unit_test_impl_->death_test_factory_.reset(new_factory);
93 }
94
95 ~ReplaceDeathTestFactory() {
96 unit_test_impl_->death_test_factory_.release();
97 unit_test_impl_->death_test_factory_.reset(old_factory_);
98 }
99 private:
100 // Prevents copying ReplaceDeathTestFactory objects.
101 ReplaceDeathTestFactory(const ReplaceDeathTestFactory&);
102 void operator=(const ReplaceDeathTestFactory&);
103
104 UnitTestImpl* unit_test_impl_;
105 DeathTestFactory* old_factory_;
106 };
107
108 } // namespace internal
109 } // namespace testing
110
111 void DieWithMessage(const ::std::string& message) {
112 fprintf(stderr, "%s", message.c_str());
113 fflush(stderr); // Make sure the text is printed before the process exits.
114
115 // We call _exit() instead of exit(), as the former is a direct
116 // system call and thus safer in the presence of threads. exit()
117 // will invoke user-defined exit-hooks, which may do dangerous
118 // things that conflict with death tests.
119 //
120 // Some compilers can recognize that _exit() never returns and issue the
121 // 'unreachable code' warning for code following this function, unless
122 // fooled by a fake condition.
123 if (AlwaysTrue())
124 _exit(1);
125 }
126
127 void DieInside(const ::std::string& function) {
128 DieWithMessage("death inside " + function + "().");
129 }
130
131 // Tests that death tests work.
132
133 class TestForDeathTest : public testing::Test {
134 protected:
135 TestForDeathTest() : original_dir_(FilePath::GetCurrentDir()) {}
136
137 virtual ~TestForDeathTest() {
138 posix::ChDir(original_dir_.c_str());
139 }
140
141 // A static member function that's expected to die.
142 static void StaticMemberFunction() { DieInside("StaticMemberFunction"); }
143
144 // A method of the test fixture that may die.
145 void MemberFunction() {
146 if (should_die_)
147 DieInside("MemberFunction");
148 }
149
150 // True iff MemberFunction() should die.
151 bool should_die_;
152 const FilePath original_dir_;
153 };
154
155 // A class with a member function that may die.
156 class MayDie {
157 public:
158 explicit MayDie(bool should_die) : should_die_(should_die) {}
159
160 // A member function that may die.
161 void MemberFunction() const {
162 if (should_die_)
163 DieInside("MayDie::MemberFunction");
164 }
165
166 private:
167 // True iff MemberFunction() should die.
168 bool should_die_;
169 };
170
171 // A global function that's expected to die.
172 void GlobalFunction() { DieInside("GlobalFunction"); }
173
174 // A non-void function that's expected to die.
175 int NonVoidFunction() {
176 DieInside("NonVoidFunction");
177 return 1;
178 }
179
180 // A unary function that may die.
181 void DieIf(bool should_die) {
182 if (should_die)
183 DieInside("DieIf");
184 }
185
186 // A binary function that may die.
187 bool DieIfLessThan(int x, int y) {
188 if (x < y) {
189 DieInside("DieIfLessThan");
190 }
191 return true;
192 }
193
194 // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
195 void DeathTestSubroutine() {
196 EXPECT_DEATH(GlobalFunction(), "death.*GlobalFunction");
197 ASSERT_DEATH(GlobalFunction(), "death.*GlobalFunction");
198 }
199
200 // Death in dbg, not opt.
201 int DieInDebugElse12(int* sideeffect) {
202 if (sideeffect) *sideeffect = 12;
203
204 # ifndef NDEBUG
205
206 DieInside("DieInDebugElse12");
207
208 # endif // NDEBUG
209
210 return 12;
211 }
212
213 # if GTEST_OS_WINDOWS
214
215 // Tests the ExitedWithCode predicate.
216 TEST(ExitStatusPredicateTest, ExitedWithCode) {
217 // On Windows, the process's exit code is the same as its exit status,
218 // so the predicate just compares the its input with its parameter.
219 EXPECT_TRUE(testing::ExitedWithCode(0)(0));
220 EXPECT_TRUE(testing::ExitedWithCode(1)(1));
221 EXPECT_TRUE(testing::ExitedWithCode(42)(42));
222 EXPECT_FALSE(testing::ExitedWithCode(0)(1));
223 EXPECT_FALSE(testing::ExitedWithCode(1)(0));
224 }
225
226 # else
227
228 // Returns the exit status of a process that calls _exit(2) with a
229 // given exit code. This is a helper function for the
230 // ExitStatusPredicateTest test suite.
231 static int NormalExitStatus(int exit_code) {
232 pid_t child_pid = fork();
233 if (child_pid == 0) {
234 _exit(exit_code);
235 }
236 int status;
237 waitpid(child_pid, &status, 0);
238 return status;
239 }
240
241 // Returns the exit status of a process that raises a given signal.
242 // If the signal does not cause the process to die, then it returns
243 // instead the exit status of a process that exits normally with exit
244 // code 1. This is a helper function for the ExitStatusPredicateTest
245 // test suite.
246 static int KilledExitStatus(int signum) {
247 pid_t child_pid = fork();
248 if (child_pid == 0) {
249 raise(signum);
250 _exit(1);
251 }
252 int status;
253 waitpid(child_pid, &status, 0);
254 return status;
255 }
256
257 // Tests the ExitedWithCode predicate.
258 TEST(ExitStatusPredicateTest, ExitedWithCode) {
259 const int status0 = NormalExitStatus(0);
260 const int status1 = NormalExitStatus(1);
261 const int status42 = NormalExitStatus(42);
262 const testing::ExitedWithCode pred0(0);
263 const testing::ExitedWithCode pred1(1);
264 const testing::ExitedWithCode pred42(42);
265 EXPECT_PRED1(pred0, status0);
266 EXPECT_PRED1(pred1, status1);
267 EXPECT_PRED1(pred42, status42);
268 EXPECT_FALSE(pred0(status1));
269 EXPECT_FALSE(pred42(status0));
270 EXPECT_FALSE(pred1(status42));
271 }
272
273 // Tests the KilledBySignal predicate.
274 TEST(ExitStatusPredicateTest, KilledBySignal) {
275 const int status_segv = KilledExitStatus(SIGSEGV);
276 const int status_kill = KilledExitStatus(SIGKILL);
277 const testing::KilledBySignal pred_segv(SIGSEGV);
278 const testing::KilledBySignal pred_kill(SIGKILL);
279 EXPECT_PRED1(pred_segv, status_segv);
280 EXPECT_PRED1(pred_kill, status_kill);
281 EXPECT_FALSE(pred_segv(status_kill));
282 EXPECT_FALSE(pred_kill(status_segv));
283 }
284
285 # endif // GTEST_OS_WINDOWS
286
287 // Tests that the death test macros expand to code which may or may not
288 // be followed by operator<<, and that in either case the complete text
289 // comprises only a single C++ statement.
290 TEST_F(TestForDeathTest, SingleStatement) {
291 if (AlwaysFalse())
292 // This would fail if executed; this is a compilation test only
293 ASSERT_DEATH(return, "");
294
295 if (AlwaysTrue())
296 EXPECT_DEATH(_exit(1), "");
297 else
298 // This empty "else" branch is meant to ensure that EXPECT_DEATH
299 // doesn't expand into an "if" statement without an "else"
300 ;
301
302 if (AlwaysFalse())
303 ASSERT_DEATH(return, "") << "did not die";
304
305 if (AlwaysFalse())
306 ;
307 else
308 EXPECT_DEATH(_exit(1), "") << 1 << 2 << 3;
309 }
310
311 void DieWithEmbeddedNul() {
312 fprintf(stderr, "Hello%cmy null world.\n", '\0');
313 fflush(stderr);
314 _exit(1);
315 }
316
317 # if GTEST_USES_PCRE
318 // Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
319 // message has a NUL character in it.
320 TEST_F(TestForDeathTest, EmbeddedNulInMessage) {
321 // TODO(wan@google.com): <regex.h> doesn't support matching strings
322 // with embedded NUL characters - find a way to workaround it.
323 EXPECT_DEATH(DieWithEmbeddedNul(), "my null world");
324 ASSERT_DEATH(DieWithEmbeddedNul(), "my null world");
325 }
326 # endif // GTEST_USES_PCRE
327
328 // Tests that death test macros expand to code which interacts well with switch
329 // statements.
330 TEST_F(TestForDeathTest, SwitchStatement) {
331 // Microsoft compiler usually complains about switch statements without
332 // case labels. We suppress that warning for this test.
333 # ifdef _MSC_VER
334 # pragma warning(push)
335 # pragma warning(disable: 4065)
336 # endif // _MSC_VER
337
338 switch (0)
339 default:
340 ASSERT_DEATH(_exit(1), "") << "exit in default switch handler";
341
342 switch (0)
343 case 0:
344 EXPECT_DEATH(_exit(1), "") << "exit in switch case";
345
346 # ifdef _MSC_VER
347 # pragma warning(pop)
348 # endif // _MSC_VER
349 }
350
351 // Tests that a static member function can be used in a "fast" style
352 // death test.
353 TEST_F(TestForDeathTest, StaticMemberFunctionFastStyle) {
354 testing::GTEST_FLAG(death_test_style) = "fast";
355 ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
356 }
357
358 // Tests that a method of the test fixture can be used in a "fast"
359 // style death test.
360 TEST_F(TestForDeathTest, MemberFunctionFastStyle) {
361 testing::GTEST_FLAG(death_test_style) = "fast";
362 should_die_ = true;
363 EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
364 }
365
366 void ChangeToRootDir() { posix::ChDir(GTEST_PATH_SEP_); }
367
368 // Tests that death tests work even if the current directory has been
369 // changed.
370 TEST_F(TestForDeathTest, FastDeathTestInChangedDir) {
371 testing::GTEST_FLAG(death_test_style) = "fast";
372
373 ChangeToRootDir();
374 EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
375
376 ChangeToRootDir();
377 ASSERT_DEATH(_exit(1), "");
378 }
379
380 # if GTEST_OS_LINUX
381 void SigprofAction(int, siginfo_t*, void*) { /* no op */ }
382
383 // Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms).
384 void SetSigprofActionAndTimer() {
385 struct itimerval timer;
386 timer.it_interval.tv_sec = 0;
387 timer.it_interval.tv_usec = 1;
388 timer.it_value = timer.it_interval;
389 ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
390 struct sigaction signal_action;
391 memset(&signal_action, 0, sizeof(signal_action));
392 sigemptyset(&signal_action.sa_mask);
393 signal_action.sa_sigaction = SigprofAction;
394 signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
395 ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, NULL));
396 }
397
398 // Disables ITIMER_PROF timer and ignores SIGPROF signal.
399 void DisableSigprofActionAndTimer(struct sigaction* old_signal_action) {
400 struct itimerval timer;
401 timer.it_interval.tv_sec = 0;
402 timer.it_interval.tv_usec = 0;
403 timer.it_value = timer.it_interval;
404 ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, NULL));
405 struct sigaction signal_action;
406 memset(&signal_action, 0, sizeof(signal_action));
407 sigemptyset(&signal_action.sa_mask);
408 signal_action.sa_handler = SIG_IGN;
409 ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, old_signal_action));
410 }
411
412 // Tests that death tests work when SIGPROF handler and timer are set.
413 TEST_F(TestForDeathTest, FastSigprofActionSet) {
414 testing::GTEST_FLAG(death_test_style) = "fast";
415 SetSigprofActionAndTimer();
416 EXPECT_DEATH(_exit(1), "");
417 struct sigaction old_signal_action;
418 DisableSigprofActionAndTimer(&old_signal_action);
419 EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
420 }
421
422 TEST_F(TestForDeathTest, ThreadSafeSigprofActionSet) {
423 testing::GTEST_FLAG(death_test_style) = "threadsafe";
424 SetSigprofActionAndTimer();
425 EXPECT_DEATH(_exit(1), "");
426 struct sigaction old_signal_action;
427 DisableSigprofActionAndTimer(&old_signal_action);
428 EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
429 }
430 # endif // GTEST_OS_LINUX
431
432 // Repeats a representative sample of death tests in the "threadsafe" style:
433
434 TEST_F(TestForDeathTest, StaticMemberFunctionThreadsafeStyle) {
435 testing::GTEST_FLAG(death_test_style) = "threadsafe";
436 ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember");
437 }
438
439 TEST_F(TestForDeathTest, MemberFunctionThreadsafeStyle) {
440 testing::GTEST_FLAG(death_test_style) = "threadsafe";
441 should_die_ = true;
442 EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction");
443 }
444
445 TEST_F(TestForDeathTest, ThreadsafeDeathTestInLoop) {
446 testing::GTEST_FLAG(death_test_style) = "threadsafe";
447
448 for (int i = 0; i < 3; ++i)
449 EXPECT_EXIT(_exit(i), testing::ExitedWithCode(i), "") << ": i = " << i;
450 }
451
452 TEST_F(TestForDeathTest, ThreadsafeDeathTestInChangedDir) {
453 testing::GTEST_FLAG(death_test_style) = "threadsafe";
454
455 ChangeToRootDir();
456 EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
457
458 ChangeToRootDir();
459 ASSERT_DEATH(_exit(1), "");
460 }
461
462 TEST_F(TestForDeathTest, MixedStyles) {
463 testing::GTEST_FLAG(death_test_style) = "threadsafe";
464 EXPECT_DEATH(_exit(1), "");
465 testing::GTEST_FLAG(death_test_style) = "fast";
466 EXPECT_DEATH(_exit(1), "");
467 }
468
469 namespace {
470
471 bool pthread_flag;
472
473 void SetPthreadFlag() {
474 pthread_flag = true;
475 }
476
477 } // namespace
478
479 # if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
480
481 TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) {
482 if (!testing::GTEST_FLAG(death_test_use_fork)) {
483 testing::GTEST_FLAG(death_test_style) = "threadsafe";
484 pthread_flag = false;
485 ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, NULL, NULL));
486 ASSERT_DEATH(_exit(1), "");
487 ASSERT_FALSE(pthread_flag);
488 }
489 }
490
491 # endif // GTEST_HAS_CLONE && GTEST_HAS_PTHREAD
492
493 // Tests that a method of another class can be used in a death test.
494 TEST_F(TestForDeathTest, MethodOfAnotherClass) {
495 const MayDie x(true);
496 ASSERT_DEATH(x.MemberFunction(), "MayDie\\:\\:MemberFunction");
497 }
498
499 // Tests that a global function can be used in a death test.
500 TEST_F(TestForDeathTest, GlobalFunction) {
501 EXPECT_DEATH(GlobalFunction(), "GlobalFunction");
502 }
503
504 // Tests that any value convertible to an RE works as a second
505 // argument to EXPECT_DEATH.
506 TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) {
507 static const char regex_c_str[] = "GlobalFunction";
508 EXPECT_DEATH(GlobalFunction(), regex_c_str);
509
510 const testing::internal::RE regex(regex_c_str);
511 EXPECT_DEATH(GlobalFunction(), regex);
512
513 # if GTEST_HAS_GLOBAL_STRING
514
515 const string regex_str(regex_c_str);
516 EXPECT_DEATH(GlobalFunction(), regex_str);
517
518 # endif // GTEST_HAS_GLOBAL_STRING
519
520 const ::std::string regex_std_str(regex_c_str);
521 EXPECT_DEATH(GlobalFunction(), regex_std_str);
522 }
523
524 // Tests that a non-void function can be used in a death test.
525 TEST_F(TestForDeathTest, NonVoidFunction) {
526 ASSERT_DEATH(NonVoidFunction(), "NonVoidFunction");
527 }
528
529 // Tests that functions that take parameter(s) can be used in a death test.
530 TEST_F(TestForDeathTest, FunctionWithParameter) {
531 EXPECT_DEATH(DieIf(true), "DieIf\\(\\)");
532 EXPECT_DEATH(DieIfLessThan(2, 3), "DieIfLessThan");
533 }
534
535 // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture.
536 TEST_F(TestForDeathTest, OutsideFixture) {
537 DeathTestSubroutine();
538 }
539
540 // Tests that death tests can be done inside a loop.
541 TEST_F(TestForDeathTest, InsideLoop) {
542 for (int i = 0; i < 5; i++) {
543 EXPECT_DEATH(DieIfLessThan(-1, i), "DieIfLessThan") << "where i == " << i;
544 }
545 }
546
547 // Tests that a compound statement can be used in a death test.
548 TEST_F(TestForDeathTest, CompoundStatement) {
549 EXPECT_DEATH({ // NOLINT
550 const int x = 2;
551 const int y = x + 1;
552 DieIfLessThan(x, y);
553 },
554 "DieIfLessThan");
555 }
556
557 // Tests that code that doesn't die causes a death test to fail.
558 TEST_F(TestForDeathTest, DoesNotDie) {
559 EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(DieIf(false), "DieIf"),
560 "failed to die");
561 }
562
563 // Tests that a death test fails when the error message isn't expected.
564 TEST_F(TestForDeathTest, ErrorMessageMismatch) {
565 EXPECT_NONFATAL_FAILURE({ // NOLINT
566 EXPECT_DEATH(DieIf(true), "DieIfLessThan") << "End of death test message.";
567 }, "died but not with expected error");
568 }
569
570 // On exit, *aborted will be true iff the EXPECT_DEATH() statement
571 // aborted the function.
572 void ExpectDeathTestHelper(bool* aborted) {
573 *aborted = true;
574 EXPECT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
575 *aborted = false;
576 }
577
578 // Tests that EXPECT_DEATH doesn't abort the test on failure.
579 TEST_F(TestForDeathTest, EXPECT_DEATH) {
580 bool aborted = true;
581 EXPECT_NONFATAL_FAILURE(ExpectDeathTestHelper(&aborted),
582 "failed to die");
583 EXPECT_FALSE(aborted);
584 }
585
586 // Tests that ASSERT_DEATH does abort the test on failure.
587 TEST_F(TestForDeathTest, ASSERT_DEATH) {
588 static bool aborted;
589 EXPECT_FATAL_FAILURE({ // NOLINT
590 aborted = true;
591 ASSERT_DEATH(DieIf(false), "DieIf"); // This assertion should fail.
592 aborted = false;
593 }, "failed to die");
594 EXPECT_TRUE(aborted);
595 }
596
597 // Tests that EXPECT_DEATH evaluates the arguments exactly once.
598 TEST_F(TestForDeathTest, SingleEvaluation) {
599 int x = 3;
600 EXPECT_DEATH(DieIf((++x) == 4), "DieIf");
601
602 const char* regex = "DieIf";
603 const char* regex_save = regex;
604 EXPECT_DEATH(DieIfLessThan(3, 4), regex++);
605 EXPECT_EQ(regex_save + 1, regex);
606 }
607
608 // Tests that run-away death tests are reported as failures.
609 TEST_F(TestForDeathTest, RunawayIsFailure) {
610 EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(static_cast<void>(0), "Foo"),
611 "failed to die.");
612 }
613
614 // Tests that death tests report executing 'return' in the statement as
615 // failure.
616 TEST_F(TestForDeathTest, ReturnIsFailure) {
617 EXPECT_FATAL_FAILURE(ASSERT_DEATH(return, "Bar"),
618 "illegal return in test statement.");
619 }
620
621 // Tests that EXPECT_DEBUG_DEATH works as expected, that is, you can stream a
622 // message to it, and in debug mode it:
623 // 1. Asserts on death.
624 // 2. Has no side effect.
625 //
626 // And in opt mode, it:
627 // 1. Has side effects but does not assert.
628 TEST_F(TestForDeathTest, TestExpectDebugDeath) {
629 int sideeffect = 0;
630
631 EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
632 << "Must accept a streamed message";
633
634 # ifdef NDEBUG
635
636 // Checks that the assignment occurs in opt mode (sideeffect).
637 EXPECT_EQ(12, sideeffect);
638
639 # else
640
641 // Checks that the assignment does not occur in dbg mode (no sideeffect).
642 EXPECT_EQ(0, sideeffect);
643
644 # endif
645 }
646
647 // Tests that ASSERT_DEBUG_DEATH works as expected, that is, you can stream a
648 // message to it, and in debug mode it:
649 // 1. Asserts on death.
650 // 2. Has no side effect.
651 //
652 // And in opt mode, it:
653 // 1. Has side effects but does not assert.
654 TEST_F(TestForDeathTest, TestAssertDebugDeath) {
655 int sideeffect = 0;
656
657 ASSERT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
658 << "Must accept a streamed message";
659
660 # ifdef NDEBUG
661
662 // Checks that the assignment occurs in opt mode (sideeffect).
663 EXPECT_EQ(12, sideeffect);
664
665 # else
666
667 // Checks that the assignment does not occur in dbg mode (no sideeffect).
668 EXPECT_EQ(0, sideeffect);
669
670 # endif
671 }
672
673 # ifndef NDEBUG
674
675 void ExpectDebugDeathHelper(bool* aborted) {
676 *aborted = true;
677 EXPECT_DEBUG_DEATH(return, "") << "This is expected to fail.";
678 *aborted = false;
679 }
680
681 # if GTEST_OS_WINDOWS
682 TEST(PopUpDeathTest, DoesNotShowPopUpOnAbort) {
683 printf("This test should be considered failing if it shows "
684 "any pop-up dialogs.\n");
685 fflush(stdout);
686
687 EXPECT_DEATH({
688 testing::GTEST_FLAG(catch_exceptions) = false;
689 abort();
690 }, "");
691 }
692 # endif // GTEST_OS_WINDOWS
693
694 // Tests that EXPECT_DEBUG_DEATH in debug mode does not abort
695 // the function.
696 TEST_F(TestForDeathTest, ExpectDebugDeathDoesNotAbort) {
697 bool aborted = true;
698 EXPECT_NONFATAL_FAILURE(ExpectDebugDeathHelper(&aborted), "");
699 EXPECT_FALSE(aborted);
700 }
701
702 void AssertDebugDeathHelper(bool* aborted) {
703 *aborted = true;
704 ASSERT_DEBUG_DEATH(return, "") << "This is expected to fail.";
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 # endif // _NDEBUG
718
719 // Tests the *_EXIT family of macros, using a variety of predicates.
720 static void TestExitMacros() {
721 EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), "");
722 ASSERT_EXIT(_exit(42), testing::ExitedWithCode(42), "");
723
724 # if GTEST_OS_WINDOWS
725
726 // Of all signals effects on the process exit code, only those of SIGABRT
727 // are documented on Windows.
728 // See http://msdn.microsoft.com/en-us/library/dwwzkt4c(VS.71).aspx.
729 EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), "") << "b_ar";
730
731 # else
732
733 EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo";
734 ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar";
735
736 EXPECT_FATAL_FAILURE({ // NOLINT
737 ASSERT_EXIT(_exit(0), testing::KilledBySignal(SIGSEGV), "")
738 << "This failure is expected, too.";
739 }, "This failure is expected, too.");
740
741 # endif // GTEST_OS_WINDOWS
742
743 EXPECT_NONFATAL_FAILURE({ // NOLINT
744 EXPECT_EXIT(raise(SIGSEGV), testing::ExitedWithCode(0), "")
745 << "This failure is expected.";
746 }, "This failure is expected.");
747 }
748
749 TEST_F(TestForDeathTest, ExitMacros) {
750 TestExitMacros();
751 }
752
753 TEST_F(TestForDeathTest, ExitMacrosUsingFork) {
754 testing::GTEST_FLAG(death_test_use_fork) = true;
755 TestExitMacros();
756 }
757
758 TEST_F(TestForDeathTest, InvalidStyle) {
759 testing::GTEST_FLAG(death_test_style) = "rococo";
760 EXPECT_NONFATAL_FAILURE({ // NOLINT
761 EXPECT_DEATH(_exit(0), "") << "This failure is expected.";
762 }, "This failure is expected.");
763 }
764
765 TEST_F(TestForDeathTest, DeathTestFailedOutput) {
766 testing::GTEST_FLAG(death_test_style) = "fast";
767 EXPECT_NONFATAL_FAILURE(
768 EXPECT_DEATH(DieWithMessage("death\n"),
769 "expected message"),
770 "Actual msg:\n"
771 "[ DEATH ] death\n");
772 }
773
774 TEST_F(TestForDeathTest, DeathTestUnexpectedReturnOutput) {
775 testing::GTEST_FLAG(death_test_style) = "fast";
776 EXPECT_NONFATAL_FAILURE(
777 EXPECT_DEATH({
778 fprintf(stderr, "returning\n");
779 fflush(stderr);
780 return;
781 }, ""),
782 " Result: illegal return in test statement.\n"
783 " Error msg:\n"
784 "[ DEATH ] returning\n");
785 }
786
787 TEST_F(TestForDeathTest, DeathTestBadExitCodeOutput) {
788 testing::GTEST_FLAG(death_test_style) = "fast";
789 EXPECT_NONFATAL_FAILURE(
790 EXPECT_EXIT(DieWithMessage("exiting with rc 1\n"),
791 testing::ExitedWithCode(3),
792 "expected message"),
793 " Result: died but not with expected exit code:\n"
794 " Exited with exit status 1\n"
795 "Actual msg:\n"
796 "[ DEATH ] exiting with rc 1\n");
797 }
798
799 TEST_F(TestForDeathTest, DeathTestMultiLineMatchFail) {
800 testing::GTEST_FLAG(death_test_style) = "fast";
801 EXPECT_NONFATAL_FAILURE(
802 EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
803 "line 1\nxyz\nline 3\n"),
804 "Actual msg:\n"
805 "[ DEATH ] line 1\n"
806 "[ DEATH ] line 2\n"
807 "[ DEATH ] line 3\n");
808 }
809
810 TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) {
811 testing::GTEST_FLAG(death_test_style) = "fast";
812 EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"),
813 "line 1\nline 2\nline 3\n");
814 }
815
816 // A DeathTestFactory that returns MockDeathTests.
817 class MockDeathTestFactory : public DeathTestFactory {
818 public:
819 MockDeathTestFactory();
820 virtual bool Create(const char* statement,
821 const ::testing::internal::RE* regex,
822 const char* file, int line, DeathTest** test);
823
824 // Sets the parameters for subsequent calls to Create.
825 void SetParameters(bool create, DeathTest::TestRole role,
826 int status, bool passed);
827
828 // Accessors.
829 int AssumeRoleCalls() const { return assume_role_calls_; }
830 int WaitCalls() const { return wait_calls_; }
831 int PassedCalls() const { return passed_args_.size(); }
832 bool PassedArgument(int n) const { return passed_args_[n]; }
833 int AbortCalls() const { return abort_args_.size(); }
834 DeathTest::AbortReason AbortArgument(int n) const {
835 return abort_args_[n];
836 }
837 bool TestDeleted() const { return test_deleted_; }
838
839 private:
840 friend class MockDeathTest;
841 // If true, Create will return a MockDeathTest; otherwise it returns
842 // NULL.
843 bool create_;
844 // The value a MockDeathTest will return from its AssumeRole method.
845 DeathTest::TestRole role_;
846 // The value a MockDeathTest will return from its Wait method.
847 int status_;
848 // The value a MockDeathTest will return from its Passed method.
849 bool passed_;
850
851 // Number of times AssumeRole was called.
852 int assume_role_calls_;
853 // Number of times Wait was called.
854 int wait_calls_;
855 // The arguments to the calls to Passed since the last call to
856 // SetParameters.
857 std::vector<bool> passed_args_;
858 // The arguments to the calls to Abort since the last call to
859 // SetParameters.
860 std::vector<DeathTest::AbortReason> abort_args_;
861 // True if the last MockDeathTest returned by Create has been
862 // deleted.
863 bool test_deleted_;
864 };
865
866
867 // A DeathTest implementation useful in testing. It returns values set
868 // at its creation from its various inherited DeathTest methods, and
869 // reports calls to those methods to its parent MockDeathTestFactory
870 // object.
871 class MockDeathTest : public DeathTest {
872 public:
873 MockDeathTest(MockDeathTestFactory *parent,
874 TestRole role, int status, bool passed) :
875 parent_(parent), role_(role), status_(status), passed_(passed) {
876 }
877 virtual ~MockDeathTest() {
878 parent_->test_deleted_ = true;
879 }
880 virtual TestRole AssumeRole() {
881 ++parent_->assume_role_calls_;
882 return role_;
883 }
884 virtual int Wait() {
885 ++parent_->wait_calls_;
886 return status_;
887 }
888 virtual bool Passed(bool exit_status_ok) {
889 parent_->passed_args_.push_back(exit_status_ok);
890 return passed_;
891 }
892 virtual void Abort(AbortReason reason) {
893 parent_->abort_args_.push_back(reason);
894 }
895
896 private:
897 MockDeathTestFactory* const parent_;
898 const TestRole role_;
899 const int status_;
900 const bool passed_;
901 };
902
903
904 // MockDeathTestFactory constructor.
905 MockDeathTestFactory::MockDeathTestFactory()
906 : create_(true),
907 role_(DeathTest::OVERSEE_TEST),
908 status_(0),
909 passed_(true),
910 assume_role_calls_(0),
911 wait_calls_(0),
912 passed_args_(),
913 abort_args_() {
914 }
915
916
917 // Sets the parameters for subsequent calls to Create.
918 void MockDeathTestFactory::SetParameters(bool create,
919 DeathTest::TestRole role,
920 int status, bool passed) {
921 create_ = create;
922 role_ = role;
923 status_ = status;
924 passed_ = passed;
925
926 assume_role_calls_ = 0;
927 wait_calls_ = 0;
928 passed_args_.clear();
929 abort_args_.clear();
930 }
931
932
933 // Sets test to NULL (if create_ is false) or to the address of a new
934 // MockDeathTest object with parameters taken from the last call
935 // to SetParameters (if create_ is true). Always returns true.
936 bool MockDeathTestFactory::Create(const char* /*statement*/,
937 const ::testing::internal::RE* /*regex*/,
938 const char* /*file*/,
939 int /*line*/,
940 DeathTest** test) {
941 test_deleted_ = false;
942 if (create_) {
943 *test = new MockDeathTest(this, role_, status_, passed_);
944 } else {
945 *test = NULL;
946 }
947 return true;
948 }
949
950 // A test fixture for testing the logic of the GTEST_DEATH_TEST_ macro.
951 // It installs a MockDeathTestFactory that is used for the duration
952 // of the test case.
953 class MacroLogicDeathTest : public testing::Test {
954 protected:
955 static testing::internal::ReplaceDeathTestFactory* replacer_;
956 static MockDeathTestFactory* factory_;
957
958 static void SetUpTestCase() {
959 factory_ = new MockDeathTestFactory;
960 replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_);
961 }
962
963 static void TearDownTestCase() {
964 delete replacer_;
965 replacer_ = NULL;
966 delete factory_;
967 factory_ = NULL;
968 }
969
970 // Runs a death test that breaks the rules by returning. Such a death
971 // test cannot be run directly from a test routine that uses a
972 // MockDeathTest, or the remainder of the routine will not be executed.
973 static void RunReturningDeathTest(bool* flag) {
974 ASSERT_DEATH({ // NOLINT
975 *flag = true;
976 return;
977 }, "");
978 }
979 };
980
981 testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_
982 = NULL;
983 MockDeathTestFactory* MacroLogicDeathTest::factory_ = NULL;
984
985
986 // Test that nothing happens when the factory doesn't return a DeathTest:
987 TEST_F(MacroLogicDeathTest, NothingHappens) {
988 bool flag = false;
989 factory_->SetParameters(false, DeathTest::OVERSEE_TEST, 0, true);
990 EXPECT_DEATH(flag = true, "");
991 EXPECT_FALSE(flag);
992 EXPECT_EQ(0, factory_->AssumeRoleCalls());
993 EXPECT_EQ(0, factory_->WaitCalls());
994 EXPECT_EQ(0, factory_->PassedCalls());
995 EXPECT_EQ(0, factory_->AbortCalls());
996 EXPECT_FALSE(factory_->TestDeleted());
997 }
998
999 // Test that the parent process doesn't run the death test code,
1000 // and that the Passed method returns false when the (simulated)
1001 // child process exits with status 0:
1002 TEST_F(MacroLogicDeathTest, ChildExitsSuccessfully) {
1003 bool flag = false;
1004 factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 0, true);
1005 EXPECT_DEATH(flag = true, "");
1006 EXPECT_FALSE(flag);
1007 EXPECT_EQ(1, factory_->AssumeRoleCalls());
1008 EXPECT_EQ(1, factory_->WaitCalls());
1009 ASSERT_EQ(1, factory_->PassedCalls());
1010 EXPECT_FALSE(factory_->PassedArgument(0));
1011 EXPECT_EQ(0, factory_->AbortCalls());
1012 EXPECT_TRUE(factory_->TestDeleted());
1013 }
1014
1015 // Tests that the Passed method was given the argument "true" when
1016 // the (simulated) child process exits with status 1:
1017 TEST_F(MacroLogicDeathTest, ChildExitsUnsuccessfully) {
1018 bool flag = false;
1019 factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 1, true);
1020 EXPECT_DEATH(flag = true, "");
1021 EXPECT_FALSE(flag);
1022 EXPECT_EQ(1, factory_->AssumeRoleCalls());
1023 EXPECT_EQ(1, factory_->WaitCalls());
1024 ASSERT_EQ(1, factory_->PassedCalls());
1025 EXPECT_TRUE(factory_->PassedArgument(0));
1026 EXPECT_EQ(0, factory_->AbortCalls());
1027 EXPECT_TRUE(factory_->TestDeleted());
1028 }
1029
1030 // Tests that the (simulated) child process executes the death test
1031 // code, and is aborted with the correct AbortReason if it
1032 // executes a return statement.
1033 TEST_F(MacroLogicDeathTest, ChildPerformsReturn) {
1034 bool flag = false;
1035 factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
1036 RunReturningDeathTest(&flag);
1037 EXPECT_TRUE(flag);
1038 EXPECT_EQ(1, factory_->AssumeRoleCalls());
1039 EXPECT_EQ(0, factory_->WaitCalls());
1040 EXPECT_EQ(0, factory_->PassedCalls());
1041 EXPECT_EQ(1, factory_->AbortCalls());
1042 EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
1043 factory_->AbortArgument(0));
1044 EXPECT_TRUE(factory_->TestDeleted());
1045 }
1046
1047 // Tests that the (simulated) child process is aborted with the
1048 // correct AbortReason if it does not die.
1049 TEST_F(MacroLogicDeathTest, ChildDoesNotDie) {
1050 bool flag = false;
1051 factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true);
1052 EXPECT_DEATH(flag = true, "");
1053 EXPECT_TRUE(flag);
1054 EXPECT_EQ(1, factory_->AssumeRoleCalls());
1055 EXPECT_EQ(0, factory_->WaitCalls());
1056 EXPECT_EQ(0, factory_->PassedCalls());
1057 // This time there are two calls to Abort: one since the test didn't
1058 // die, and another from the ReturnSentinel when it's destroyed. The
1059 // sentinel normally isn't destroyed if a test doesn't die, since
1060 // _exit(2) is called in that case by ForkingDeathTest, but not by
1061 // our MockDeathTest.
1062 ASSERT_EQ(2, factory_->AbortCalls());
1063 EXPECT_EQ(DeathTest::TEST_DID_NOT_DIE,
1064 factory_->AbortArgument(0));
1065 EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT,
1066 factory_->AbortArgument(1));
1067 EXPECT_TRUE(factory_->TestDeleted());
1068 }
1069
1070 // Tests that a successful death test does not register a successful
1071 // test part.
1072 TEST(SuccessRegistrationDeathTest, NoSuccessPart) {
1073 EXPECT_DEATH(_exit(1), "");
1074 EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count());
1075 }
1076
1077 TEST(StreamingAssertionsDeathTest, DeathTest) {
1078 EXPECT_DEATH(_exit(1), "") << "unexpected failure";
1079 ASSERT_DEATH(_exit(1), "") << "unexpected failure";
1080 EXPECT_NONFATAL_FAILURE({ // NOLINT
1081 EXPECT_DEATH(_exit(0), "") << "expected failure";
1082 }, "expected failure");
1083 EXPECT_FATAL_FAILURE({ // NOLINT
1084 ASSERT_DEATH(_exit(0), "") << "expected failure";
1085 }, "expected failure");
1086 }
1087
1088 // Tests that GetLastErrnoDescription returns an empty string when the
1089 // last error is 0 and non-empty string when it is non-zero.
1090 TEST(GetLastErrnoDescription, GetLastErrnoDescriptionWorks) {
1091 errno = ENOENT;
1092 EXPECT_STRNE("", GetLastErrnoDescription().c_str());
1093 errno = 0;
1094 EXPECT_STREQ("", GetLastErrnoDescription().c_str());
1095 }
1096
1097 # if GTEST_OS_WINDOWS
1098 TEST(AutoHandleTest, AutoHandleWorks) {
1099 HANDLE handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
1100 ASSERT_NE(INVALID_HANDLE_VALUE, handle);
1101
1102 // Tests that the AutoHandle is correctly initialized with a handle.
1103 testing::internal::AutoHandle auto_handle(handle);
1104 EXPECT_EQ(handle, auto_handle.Get());
1105
1106 // Tests that Reset assigns INVALID_HANDLE_VALUE.
1107 // Note that this cannot verify whether the original handle is closed.
1108 auto_handle.Reset();
1109 EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle.Get());
1110
1111 // Tests that Reset assigns the new handle.
1112 // Note that this cannot verify whether the original handle is closed.
1113 handle = ::CreateEvent(NULL, FALSE, FALSE, NULL);
1114 ASSERT_NE(INVALID_HANDLE_VALUE, handle);
1115 auto_handle.Reset(handle);
1116 EXPECT_EQ(handle, auto_handle.Get());
1117
1118 // Tests that AutoHandle contains INVALID_HANDLE_VALUE by default.
1119 testing::internal::AutoHandle auto_handle2;
1120 EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle2.Get());
1121 }
1122 # endif // GTEST_OS_WINDOWS
1123
1124 # if GTEST_OS_WINDOWS
1125 typedef unsigned __int64 BiggestParsable;
1126 typedef signed __int64 BiggestSignedParsable;
1127 const BiggestParsable kBiggestParsableMax = ULLONG_MAX;
1128 const BiggestSignedParsable kBiggestSignedParsableMax = LLONG_MAX;
1129 # else
1130 typedef unsigned long long BiggestParsable;
1131 typedef signed long long BiggestSignedParsable;
1132 const BiggestParsable kBiggestParsableMax =
1133 ::std::numeric_limits<BiggestParsable>::max();
1134 const BiggestSignedParsable kBiggestSignedParsableMax =
1135 ::std::numeric_limits<BiggestSignedParsable>::max();
1136 # endif // GTEST_OS_WINDOWS
1137
1138 TEST(ParseNaturalNumberTest, RejectsInvalidFormat) {
1139 BiggestParsable result = 0;
1140
1141 // Rejects non-numbers.
1142 EXPECT_FALSE(ParseNaturalNumber(String("non-number string"), &result));
1143
1144 // Rejects numbers with whitespace prefix.
1145 EXPECT_FALSE(ParseNaturalNumber(String(" 123"), &result));
1146
1147 // Rejects negative numbers.
1148 EXPECT_FALSE(ParseNaturalNumber(String("-123"), &result));
1149
1150 // Rejects numbers starting with a plus sign.
1151 EXPECT_FALSE(ParseNaturalNumber(String("+123"), &result));
1152 errno = 0;
1153 }
1154
1155 TEST(ParseNaturalNumberTest, RejectsOverflownNumbers) {
1156 BiggestParsable result = 0;
1157
1158 EXPECT_FALSE(ParseNaturalNumber(String("99999999999999999999999"), &result));
1159
1160 signed char char_result = 0;
1161 EXPECT_FALSE(ParseNaturalNumber(String("200"), &char_result));
1162 errno = 0;
1163 }
1164
1165 TEST(ParseNaturalNumberTest, AcceptsValidNumbers) {
1166 BiggestParsable result = 0;
1167
1168 result = 0;
1169 ASSERT_TRUE(ParseNaturalNumber(String("123"), &result));
1170 EXPECT_EQ(123U, result);
1171
1172 // Check 0 as an edge case.
1173 result = 1;
1174 ASSERT_TRUE(ParseNaturalNumber(String("0"), &result));
1175 EXPECT_EQ(0U, result);
1176
1177 result = 1;
1178 ASSERT_TRUE(ParseNaturalNumber(String("00000"), &result));
1179 EXPECT_EQ(0U, result);
1180 }
1181
1182 TEST(ParseNaturalNumberTest, AcceptsTypeLimits) {
1183 Message msg;
1184 msg << kBiggestParsableMax;
1185
1186 BiggestParsable result = 0;
1187 EXPECT_TRUE(ParseNaturalNumber(msg.GetString(), &result));
1188 EXPECT_EQ(kBiggestParsableMax, result);
1189
1190 Message msg2;
1191 msg2 << kBiggestSignedParsableMax;
1192
1193 BiggestSignedParsable signed_result = 0;
1194 EXPECT_TRUE(ParseNaturalNumber(msg2.GetString(), &signed_result));
1195 EXPECT_EQ(kBiggestSignedParsableMax, signed_result);
1196
1197 Message msg3;
1198 msg3 << INT_MAX;
1199
1200 int int_result = 0;
1201 EXPECT_TRUE(ParseNaturalNumber(msg3.GetString(), &int_result));
1202 EXPECT_EQ(INT_MAX, int_result);
1203
1204 Message msg4;
1205 msg4 << UINT_MAX;
1206
1207 unsigned int uint_result = 0;
1208 EXPECT_TRUE(ParseNaturalNumber(msg4.GetString(), &uint_result));
1209 EXPECT_EQ(UINT_MAX, uint_result);
1210 }
1211
1212 TEST(ParseNaturalNumberTest, WorksForShorterIntegers) {
1213 short short_result = 0;
1214 ASSERT_TRUE(ParseNaturalNumber(String("123"), &short_result));
1215 EXPECT_EQ(123, short_result);
1216
1217 signed char char_result = 0;
1218 ASSERT_TRUE(ParseNaturalNumber(String("123"), &char_result));
1219 EXPECT_EQ(123, char_result);
1220 }
1221
1222 # if GTEST_OS_WINDOWS
1223 TEST(EnvironmentTest, HandleFitsIntoSizeT) {
1224 // TODO(vladl@google.com): Remove this test after this condition is verified
1225 // in a static assertion in gtest-death-test.cc in the function
1226 // GetStatusFileDescriptor.
1227 ASSERT_TRUE(sizeof(HANDLE) <= sizeof(size_t));
1228 }
1229 # endif // GTEST_OS_WINDOWS
1230
1231 // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED trigger
1232 // failures when death tests are available on the system.
1233 TEST(ConditionalDeathMacrosDeathTest, ExpectsDeathWhenDeathTestsAvailable) {
1234 EXPECT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestExpectMacro"),
1235 "death inside CondDeathTestExpectMacro");
1236 ASSERT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestAssertMacro"),
1237 "death inside CondDeathTestAssertMacro");
1238
1239 // Empty statement will not crash, which must trigger a failure.
1240 EXPECT_NONFATAL_FAILURE(EXPECT_DEATH_IF_SUPPORTED(;, ""), "");
1241 EXPECT_FATAL_FAILURE(ASSERT_DEATH_IF_SUPPORTED(;, ""), "");
1242 }
1243
1244 #else
1245
1246 using testing::internal::CaptureStderr;
1247 using testing::internal::GetCapturedStderr;
1248 using testing::internal::String;
1249
1250 // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED are still
1251 // defined but do not trigger failures when death tests are not available on
1252 // the system.
1253 TEST(ConditionalDeathMacrosTest, WarnsWhenDeathTestsNotAvailable) {
1254 // Empty statement will not crash, but that should not trigger a failure
1255 // when death tests are not supported.
1256 CaptureStderr();
1257 EXPECT_DEATH_IF_SUPPORTED(;, "");
1258 String output = GetCapturedStderr();
1259 ASSERT_TRUE(NULL != strstr(output.c_str(),
1260 "Death tests are not supported on this platform"));
1261 ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
1262
1263 // The streamed message should not be printed as there is no test failure.
1264 CaptureStderr();
1265 EXPECT_DEATH_IF_SUPPORTED(;, "") << "streamed message";
1266 output = GetCapturedStderr();
1267 ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
1268
1269 CaptureStderr();
1270 ASSERT_DEATH_IF_SUPPORTED(;, ""); // NOLINT
1271 output = GetCapturedStderr();
1272 ASSERT_TRUE(NULL != strstr(output.c_str(),
1273 "Death tests are not supported on this platform"));
1274 ASSERT_TRUE(NULL != strstr(output.c_str(), ";"));
1275
1276 CaptureStderr();
1277 ASSERT_DEATH_IF_SUPPORTED(;, "") << "streamed message"; // NOLINT
1278 output = GetCapturedStderr();
1279 ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message"));
1280 }
1281
1282 void FuncWithAssert(int* n) {
1283 ASSERT_DEATH_IF_SUPPORTED(return;, "");
1284 (*n)++;
1285 }
1286
1287 // Tests that ASSERT_DEATH_IF_SUPPORTED does not return from the current
1288 // function (as ASSERT_DEATH does) if death tests are not supported.
1289 TEST(ConditionalDeathMacrosTest, AssertDeatDoesNotReturnhIfUnsupported) {
1290 int n = 0;
1291 FuncWithAssert(&n);
1292 EXPECT_EQ(1, n);
1293 }
1294 #endif // GTEST_HAS_DEATH_TEST
1295
1296 // Tests that the death test macros expand to code which may or may not
1297 // be followed by operator<<, and that in either case the complete text
1298 // comprises only a single C++ statement.
1299 //
1300 // The syntax should work whether death tests are available or not.
1301 TEST(ConditionalDeathMacrosSyntaxDeathTest, SingleStatement) {
1302 if (AlwaysFalse())
1303 // This would fail if executed; this is a compilation test only
1304 ASSERT_DEATH_IF_SUPPORTED(return, "");
1305
1306 if (AlwaysTrue())
1307 EXPECT_DEATH_IF_SUPPORTED(_exit(1), "");
1308 else
1309 // This empty "else" branch is meant to ensure that EXPECT_DEATH
1310 // doesn't expand into an "if" statement without an "else"
1311 ; // NOLINT
1312
1313 if (AlwaysFalse())
1314 ASSERT_DEATH_IF_SUPPORTED(return, "") << "did not die";
1315
1316 if (AlwaysFalse())
1317 ; // NOLINT
1318 else
1319 EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << 1 << 2 << 3;
1320 }
1321
1322 // Tests that conditional death test macros expand to code which interacts
1323 // well with switch statements.
1324 TEST(ConditionalDeathMacrosSyntaxDeathTest, SwitchStatement) {
1325 // Microsoft compiler usually complains about switch statements without
1326 // case labels. We suppress that warning for this test.
1327 #ifdef _MSC_VER
1328 # pragma warning(push)
1329 # pragma warning(disable: 4065)
1330 #endif // _MSC_VER
1331
1332 switch (0)
1333 default:
1334 ASSERT_DEATH_IF_SUPPORTED(_exit(1), "")
1335 << "exit in default switch handler";
1336
1337 switch (0)
1338 case 0:
1339 EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << "exit in switch case";
1340
1341 #ifdef _MSC_VER
1342 # pragma warning(pop)
1343 #endif // _MSC_VER
1344 }
1345
1346 TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInFastStyle) {
1347 testing::GTEST_FLAG(death_test_style) = "fast";
1348 EXPECT_FALSE(InDeathTestChild());
1349 EXPECT_DEATH({
1350 fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
1351 fflush(stderr);
1352 _exit(1);
1353 }, "Inside");
1354 }
1355
1356 TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInThreadSafeStyle) {
1357 testing::GTEST_FLAG(death_test_style) = "threadsafe";
1358 EXPECT_FALSE(InDeathTestChild());
1359 EXPECT_DEATH({
1360 fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
1361 fflush(stderr);
1362 _exit(1);
1363 }, "Inside");
1364 }
1365
1366 // Tests that a test case whose name ends with "DeathTest" works fine
1367 // on Windows.
1368 TEST(NotADeathTest, Test) {
1369 SUCCEED();
1370 }

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