// Copyright 2005, Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // // Author: wan@google.com (Zhanyong Wan) // // Tests for death tests. #include "gtest/gtest-death-test.h" #include "gtest/gtest.h" #include "gtest/internal/gtest-filepath.h" using testing::internal::AlwaysFalse; using testing::internal::AlwaysTrue; #if GTEST_HAS_DEATH_TEST # if GTEST_OS_WINDOWS # include <direct.h> // For chdir(). # else # include <unistd.h> # include <sys/wait.h> // For waitpid. # include <limits> // For std::numeric_limits. # endif // GTEST_OS_WINDOWS # include <limits.h> # include <signal.h> # include <stdio.h> # include "gtest/gtest-spi.h" // Indicates that this translation unit is part of Google Test's // implementation. It must come before gtest-internal-inl.h is // included, or there will be a compiler error. This trick is to // prevent a user from accidentally including gtest-internal-inl.h in // his code. # define GTEST_IMPLEMENTATION_ 1 # include "src/gtest-internal-inl.h" # undef GTEST_IMPLEMENTATION_ namespace posix = ::testing::internal::posix; using testing::Message; using testing::internal::DeathTest; using testing::internal::DeathTestFactory; using testing::internal::FilePath; using testing::internal::GetLastErrnoDescription; using testing::internal::GetUnitTestImpl; using testing::internal::ParseNaturalNumber; using testing::internal::String; namespace testing { namespace internal { // A helper class whose objects replace the death test factory for a // single UnitTest object during their lifetimes. class ReplaceDeathTestFactory { public: explicit ReplaceDeathTestFactory(DeathTestFactory* new_factory) : unit_test_impl_(GetUnitTestImpl()) { old_factory_ = unit_test_impl_->death_test_factory_.release(); unit_test_impl_->death_test_factory_.reset(new_factory); } ~ReplaceDeathTestFactory() { unit_test_impl_->death_test_factory_.release(); unit_test_impl_->death_test_factory_.reset(old_factory_); } private: // Prevents copying ReplaceDeathTestFactory objects. ReplaceDeathTestFactory(const ReplaceDeathTestFactory&); void operator=(const ReplaceDeathTestFactory&); UnitTestImpl* unit_test_impl_; DeathTestFactory* old_factory_; }; } // namespace internal } // namespace testing void DieWithMessage(const ::std::string& message) { fprintf(stderr, "%s", message.c_str()); fflush(stderr); // Make sure the text is printed before the process exits. // We call _exit() instead of exit(), as the former is a direct // system call and thus safer in the presence of threads. exit() // will invoke user-defined exit-hooks, which may do dangerous // things that conflict with death tests. // // Some compilers can recognize that _exit() never returns and issue the // 'unreachable code' warning for code following this function, unless // fooled by a fake condition. if (AlwaysTrue()) _exit(1); } void DieInside(const ::std::string& function) { DieWithMessage("death inside " + function + "()."); } // Tests that death tests work. class TestForDeathTest : public testing::Test { protected: TestForDeathTest() : original_dir_(FilePath::GetCurrentDir()) {} virtual ~TestForDeathTest() { posix::ChDir(original_dir_.c_str()); } // A static member function that's expected to die. static void StaticMemberFunction() { DieInside("StaticMemberFunction"); } // A method of the test fixture that may die. void MemberFunction() { if (should_die_) DieInside("MemberFunction"); } // True iff MemberFunction() should die. bool should_die_; const FilePath original_dir_; }; // A class with a member function that may die. class MayDie { public: explicit MayDie(bool should_die) : should_die_(should_die) {} // A member function that may die. void MemberFunction() const { if (should_die_) DieInside("MayDie::MemberFunction"); } private: // True iff MemberFunction() should die. bool should_die_; }; // A global function that's expected to die. void GlobalFunction() { DieInside("GlobalFunction"); } // A non-void function that's expected to die. int NonVoidFunction() { DieInside("NonVoidFunction"); return 1; } // A unary function that may die. void DieIf(bool should_die) { if (should_die) DieInside("DieIf"); } // A binary function that may die. bool DieIfLessThan(int x, int y) { if (x < y) { DieInside("DieIfLessThan"); } return true; } // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture. void DeathTestSubroutine() { EXPECT_DEATH(GlobalFunction(), "death.*GlobalFunction"); ASSERT_DEATH(GlobalFunction(), "death.*GlobalFunction"); } // Death in dbg, not opt. int DieInDebugElse12(int* sideeffect) { if (sideeffect) *sideeffect = 12; # ifndef NDEBUG DieInside("DieInDebugElse12"); # endif // NDEBUG return 12; } # if GTEST_OS_WINDOWS // Tests the ExitedWithCode predicate. TEST(ExitStatusPredicateTest, ExitedWithCode) { // On Windows, the process's exit code is the same as its exit status, // so the predicate just compares the its input with its parameter. EXPECT_TRUE(testing::ExitedWithCode(0)(0)); EXPECT_TRUE(testing::ExitedWithCode(1)(1)); EXPECT_TRUE(testing::ExitedWithCode(42)(42)); EXPECT_FALSE(testing::ExitedWithCode(0)(1)); EXPECT_FALSE(testing::ExitedWithCode(1)(0)); } # else // Returns the exit status of a process that calls _exit(2) with a // given exit code. This is a helper function for the // ExitStatusPredicateTest test suite. static int NormalExitStatus(int exit_code) { pid_t child_pid = fork(); if (child_pid == 0) { _exit(exit_code); } int status; waitpid(child_pid, &status, 0); return status; } // Returns the exit status of a process that raises a given signal. // If the signal does not cause the process to die, then it returns // instead the exit status of a process that exits normally with exit // code 1. This is a helper function for the ExitStatusPredicateTest // test suite. static int KilledExitStatus(int signum) { pid_t child_pid = fork(); if (child_pid == 0) { raise(signum); _exit(1); } int status; waitpid(child_pid, &status, 0); return status; } // Tests the ExitedWithCode predicate. TEST(ExitStatusPredicateTest, ExitedWithCode) { const int status0 = NormalExitStatus(0); const int status1 = NormalExitStatus(1); const int status42 = NormalExitStatus(42); const testing::ExitedWithCode pred0(0); const testing::ExitedWithCode pred1(1); const testing::ExitedWithCode pred42(42); EXPECT_PRED1(pred0, status0); EXPECT_PRED1(pred1, status1); EXPECT_PRED1(pred42, status42); EXPECT_FALSE(pred0(status1)); EXPECT_FALSE(pred42(status0)); EXPECT_FALSE(pred1(status42)); } // Tests the KilledBySignal predicate. TEST(ExitStatusPredicateTest, KilledBySignal) { const int status_segv = KilledExitStatus(SIGSEGV); const int status_kill = KilledExitStatus(SIGKILL); const testing::KilledBySignal pred_segv(SIGSEGV); const testing::KilledBySignal pred_kill(SIGKILL); EXPECT_PRED1(pred_segv, status_segv); EXPECT_PRED1(pred_kill, status_kill); EXPECT_FALSE(pred_segv(status_kill)); EXPECT_FALSE(pred_kill(status_segv)); } # endif // GTEST_OS_WINDOWS // Tests that the death test macros expand to code which may or may not // be followed by operator<<, and that in either case the complete text // comprises only a single C++ statement. TEST_F(TestForDeathTest, SingleStatement) { if (AlwaysFalse()) // This would fail if executed; this is a compilation test only ASSERT_DEATH(return, ""); if (AlwaysTrue()) EXPECT_DEATH(_exit(1), ""); else // This empty "else" branch is meant to ensure that EXPECT_DEATH // doesn't expand into an "if" statement without an "else" ; if (AlwaysFalse()) ASSERT_DEATH(return, "") << "did not die"; if (AlwaysFalse()) ; else EXPECT_DEATH(_exit(1), "") << 1 << 2 << 3; } void DieWithEmbeddedNul() { fprintf(stderr, "Hello%cmy null world.\n", '\0'); fflush(stderr); _exit(1); } # if GTEST_USES_PCRE // Tests that EXPECT_DEATH and ASSERT_DEATH work when the error // message has a NUL character in it. TEST_F(TestForDeathTest, EmbeddedNulInMessage) { // TODO(wan@google.com): <regex.h> doesn't support matching strings // with embedded NUL characters - find a way to workaround it. EXPECT_DEATH(DieWithEmbeddedNul(), "my null world"); ASSERT_DEATH(DieWithEmbeddedNul(), "my null world"); } # endif // GTEST_USES_PCRE // Tests that death test macros expand to code which interacts well with switch // statements. TEST_F(TestForDeathTest, SwitchStatement) { // Microsoft compiler usually complains about switch statements without // case labels. We suppress that warning for this test. # ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4065) # endif // _MSC_VER switch (0) default: ASSERT_DEATH(_exit(1), "") << "exit in default switch handler"; switch (0) case 0: EXPECT_DEATH(_exit(1), "") << "exit in switch case"; # ifdef _MSC_VER # pragma warning(pop) # endif // _MSC_VER } // Tests that a static member function can be used in a "fast" style // death test. TEST_F(TestForDeathTest, StaticMemberFunctionFastStyle) { testing::GTEST_FLAG(death_test_style) = "fast"; ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember"); } // Tests that a method of the test fixture can be used in a "fast" // style death test. TEST_F(TestForDeathTest, MemberFunctionFastStyle) { testing::GTEST_FLAG(death_test_style) = "fast"; should_die_ = true; EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction"); } void ChangeToRootDir() { posix::ChDir(GTEST_PATH_SEP_); } // Tests that death tests work even if the current directory has been // changed. TEST_F(TestForDeathTest, FastDeathTestInChangedDir) { testing::GTEST_FLAG(death_test_style) = "fast"; ChangeToRootDir(); EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), ""); ChangeToRootDir(); ASSERT_DEATH(_exit(1), ""); } // Repeats a representative sample of death tests in the "threadsafe" style: TEST_F(TestForDeathTest, StaticMemberFunctionThreadsafeStyle) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; ASSERT_DEATH(StaticMemberFunction(), "death.*StaticMember"); } TEST_F(TestForDeathTest, MemberFunctionThreadsafeStyle) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; should_die_ = true; EXPECT_DEATH(MemberFunction(), "inside.*MemberFunction"); } TEST_F(TestForDeathTest, ThreadsafeDeathTestInLoop) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; for (int i = 0; i < 3; ++i) EXPECT_EXIT(_exit(i), testing::ExitedWithCode(i), "") << ": i = " << i; } TEST_F(TestForDeathTest, ThreadsafeDeathTestInChangedDir) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; ChangeToRootDir(); EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), ""); ChangeToRootDir(); ASSERT_DEATH(_exit(1), ""); } TEST_F(TestForDeathTest, MixedStyles) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; EXPECT_DEATH(_exit(1), ""); testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_DEATH(_exit(1), ""); } namespace { bool pthread_flag; void SetPthreadFlag() { pthread_flag = true; } } // namespace # if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD TEST_F(TestForDeathTest, DoesNotExecuteAtforkHooks) { if (!testing::GTEST_FLAG(death_test_use_fork)) { testing::GTEST_FLAG(death_test_style) = "threadsafe"; pthread_flag = false; ASSERT_EQ(0, pthread_atfork(&SetPthreadFlag, NULL, NULL)); ASSERT_DEATH(_exit(1), ""); ASSERT_FALSE(pthread_flag); } } # endif // GTEST_HAS_CLONE && GTEST_HAS_PTHREAD // Tests that a method of another class can be used in a death test. TEST_F(TestForDeathTest, MethodOfAnotherClass) { const MayDie x(true); ASSERT_DEATH(x.MemberFunction(), "MayDie\\:\\:MemberFunction"); } // Tests that a global function can be used in a death test. TEST_F(TestForDeathTest, GlobalFunction) { EXPECT_DEATH(GlobalFunction(), "GlobalFunction"); } // Tests that any value convertible to an RE works as a second // argument to EXPECT_DEATH. TEST_F(TestForDeathTest, AcceptsAnythingConvertibleToRE) { static const char regex_c_str[] = "GlobalFunction"; EXPECT_DEATH(GlobalFunction(), regex_c_str); const testing::internal::RE regex(regex_c_str); EXPECT_DEATH(GlobalFunction(), regex); # if GTEST_HAS_GLOBAL_STRING const string regex_str(regex_c_str); EXPECT_DEATH(GlobalFunction(), regex_str); # endif // GTEST_HAS_GLOBAL_STRING const ::std::string regex_std_str(regex_c_str); EXPECT_DEATH(GlobalFunction(), regex_std_str); } // Tests that a non-void function can be used in a death test. TEST_F(TestForDeathTest, NonVoidFunction) { ASSERT_DEATH(NonVoidFunction(), "NonVoidFunction"); } // Tests that functions that take parameter(s) can be used in a death test. TEST_F(TestForDeathTest, FunctionWithParameter) { EXPECT_DEATH(DieIf(true), "DieIf\\(\\)"); EXPECT_DEATH(DieIfLessThan(2, 3), "DieIfLessThan"); } // Tests that ASSERT_DEATH can be used outside a TEST, TEST_F, or test fixture. TEST_F(TestForDeathTest, OutsideFixture) { DeathTestSubroutine(); } // Tests that death tests can be done inside a loop. TEST_F(TestForDeathTest, InsideLoop) { for (int i = 0; i < 5; i++) { EXPECT_DEATH(DieIfLessThan(-1, i), "DieIfLessThan") << "where i == " << i; } } // Tests that a compound statement can be used in a death test. TEST_F(TestForDeathTest, CompoundStatement) { EXPECT_DEATH({ // NOLINT const int x = 2; const int y = x + 1; DieIfLessThan(x, y); }, "DieIfLessThan"); } // Tests that code that doesn't die causes a death test to fail. TEST_F(TestForDeathTest, DoesNotDie) { EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(DieIf(false), "DieIf"), "failed to die"); } // Tests that a death test fails when the error message isn't expected. TEST_F(TestForDeathTest, ErrorMessageMismatch) { EXPECT_NONFATAL_FAILURE({ // NOLINT EXPECT_DEATH(DieIf(true), "DieIfLessThan") << "End of death test message."; }, "died but not with expected error"); } // On exit, *aborted will be true iff the EXPECT_DEATH() statement // aborted the function. void ExpectDeathTestHelper(bool* aborted) { *aborted = true; EXPECT_DEATH(DieIf(false), "DieIf"); // This assertion should fail. *aborted = false; } // Tests that EXPECT_DEATH doesn't abort the test on failure. TEST_F(TestForDeathTest, EXPECT_DEATH) { bool aborted = true; EXPECT_NONFATAL_FAILURE(ExpectDeathTestHelper(&aborted), "failed to die"); EXPECT_FALSE(aborted); } // Tests that ASSERT_DEATH does abort the test on failure. TEST_F(TestForDeathTest, ASSERT_DEATH) { static bool aborted; EXPECT_FATAL_FAILURE({ // NOLINT aborted = true; ASSERT_DEATH(DieIf(false), "DieIf"); // This assertion should fail. aborted = false; }, "failed to die"); EXPECT_TRUE(aborted); } // Tests that EXPECT_DEATH evaluates the arguments exactly once. TEST_F(TestForDeathTest, SingleEvaluation) { int x = 3; EXPECT_DEATH(DieIf((++x) == 4), "DieIf"); const char* regex = "DieIf"; const char* regex_save = regex; EXPECT_DEATH(DieIfLessThan(3, 4), regex++); EXPECT_EQ(regex_save + 1, regex); } // Tests that run-away death tests are reported as failures. TEST_F(TestForDeathTest, RunawayIsFailure) { EXPECT_NONFATAL_FAILURE(EXPECT_DEATH(static_cast<void>(0), "Foo"), "failed to die."); } // Tests that death tests report executing 'return' in the statement as // failure. TEST_F(TestForDeathTest, ReturnIsFailure) { EXPECT_FATAL_FAILURE(ASSERT_DEATH(return, "Bar"), "illegal return in test statement."); } // Tests that EXPECT_DEBUG_DEATH works as expected, // that is, in debug mode, it: // 1. Asserts on death. // 2. Has no side effect. // // And in opt mode, it: // 1. Has side effects but does not assert. TEST_F(TestForDeathTest, TestExpectDebugDeath) { int sideeffect = 0; EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12"); # ifdef NDEBUG // Checks that the assignment occurs in opt mode (sideeffect). EXPECT_EQ(12, sideeffect); # else // Checks that the assignment does not occur in dbg mode (no sideeffect). EXPECT_EQ(0, sideeffect); # endif } // Tests that ASSERT_DEBUG_DEATH works as expected // In debug mode: // 1. Asserts on debug death. // 2. Has no side effect. // // In opt mode: // 1. Has side effects and returns the expected value (12). TEST_F(TestForDeathTest, TestAssertDebugDeath) { int sideeffect = 0; ASSERT_DEBUG_DEATH({ // NOLINT // Tests that the return value is 12 in opt mode. EXPECT_EQ(12, DieInDebugElse12(&sideeffect)); // Tests that the side effect occurred in opt mode. EXPECT_EQ(12, sideeffect); }, "death.*DieInDebugElse12"); # ifdef NDEBUG // Checks that the assignment occurs in opt mode (sideeffect). EXPECT_EQ(12, sideeffect); # else // Checks that the assignment does not occur in dbg mode (no sideeffect). EXPECT_EQ(0, sideeffect); # endif } # ifndef NDEBUG void ExpectDebugDeathHelper(bool* aborted) { *aborted = true; EXPECT_DEBUG_DEATH(return, "") << "This is expected to fail."; *aborted = false; } # if GTEST_OS_WINDOWS TEST(PopUpDeathTest, DoesNotShowPopUpOnAbort) { printf("This test should be considered failing if it shows " "any pop-up dialogs.\n"); fflush(stdout); EXPECT_DEATH({ testing::GTEST_FLAG(catch_exceptions) = false; abort(); }, ""); } # endif // GTEST_OS_WINDOWS // Tests that EXPECT_DEBUG_DEATH in debug mode does not abort // the function. TEST_F(TestForDeathTest, ExpectDebugDeathDoesNotAbort) { bool aborted = true; EXPECT_NONFATAL_FAILURE(ExpectDebugDeathHelper(&aborted), ""); EXPECT_FALSE(aborted); } void AssertDebugDeathHelper(bool* aborted) { *aborted = true; ASSERT_DEBUG_DEATH(return, "") << "This is expected to fail."; *aborted = false; } // Tests that ASSERT_DEBUG_DEATH in debug mode aborts the function on // failure. TEST_F(TestForDeathTest, AssertDebugDeathAborts) { static bool aborted; aborted = false; EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), ""); EXPECT_TRUE(aborted); } # endif // _NDEBUG // Tests the *_EXIT family of macros, using a variety of predicates. static void TestExitMacros() { EXPECT_EXIT(_exit(1), testing::ExitedWithCode(1), ""); ASSERT_EXIT(_exit(42), testing::ExitedWithCode(42), ""); # if GTEST_OS_WINDOWS // Of all signals effects on the process exit code, only those of SIGABRT // are documented on Windows. // See http://msdn.microsoft.com/en-us/library/dwwzkt4c(VS.71).aspx. EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), ""); # else EXPECT_EXIT(raise(SIGKILL), testing::KilledBySignal(SIGKILL), "") << "foo"; ASSERT_EXIT(raise(SIGUSR2), testing::KilledBySignal(SIGUSR2), "") << "bar"; EXPECT_FATAL_FAILURE({ // NOLINT ASSERT_EXIT(_exit(0), testing::KilledBySignal(SIGSEGV), "") << "This failure is expected, too."; }, "This failure is expected, too."); # endif // GTEST_OS_WINDOWS EXPECT_NONFATAL_FAILURE({ // NOLINT EXPECT_EXIT(raise(SIGSEGV), testing::ExitedWithCode(0), "") << "This failure is expected."; }, "This failure is expected."); } TEST_F(TestForDeathTest, ExitMacros) { TestExitMacros(); } TEST_F(TestForDeathTest, ExitMacrosUsingFork) { testing::GTEST_FLAG(death_test_use_fork) = true; TestExitMacros(); } TEST_F(TestForDeathTest, InvalidStyle) { testing::GTEST_FLAG(death_test_style) = "rococo"; EXPECT_NONFATAL_FAILURE({ // NOLINT EXPECT_DEATH(_exit(0), "") << "This failure is expected."; }, "This failure is expected."); } TEST_F(TestForDeathTest, DeathTestFailedOutput) { testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_NONFATAL_FAILURE( EXPECT_DEATH(DieWithMessage("death\n"), "expected message"), "Actual msg:\n" "[ DEATH ] death\n"); } TEST_F(TestForDeathTest, DeathTestUnexpectedReturnOutput) { testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_NONFATAL_FAILURE( EXPECT_DEATH({ fprintf(stderr, "returning\n"); fflush(stderr); return; }, ""), " Result: illegal return in test statement.\n" " Error msg:\n" "[ DEATH ] returning\n"); } TEST_F(TestForDeathTest, DeathTestBadExitCodeOutput) { testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_NONFATAL_FAILURE( EXPECT_EXIT(DieWithMessage("exiting with rc 1\n"), testing::ExitedWithCode(3), "expected message"), " Result: died but not with expected exit code:\n" " Exited with exit status 1\n" "Actual msg:\n" "[ DEATH ] exiting with rc 1\n"); } TEST_F(TestForDeathTest, DeathTestMultiLineMatchFail) { testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_NONFATAL_FAILURE( EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"), "line 1\nxyz\nline 3\n"), "Actual msg:\n" "[ DEATH ] line 1\n" "[ DEATH ] line 2\n" "[ DEATH ] line 3\n"); } TEST_F(TestForDeathTest, DeathTestMultiLineMatchPass) { testing::GTEST_FLAG(death_test_style) = "fast"; EXPECT_DEATH(DieWithMessage("line 1\nline 2\nline 3\n"), "line 1\nline 2\nline 3\n"); } // A DeathTestFactory that returns MockDeathTests. class MockDeathTestFactory : public DeathTestFactory { public: MockDeathTestFactory(); virtual bool Create(const char* statement, const ::testing::internal::RE* regex, const char* file, int line, DeathTest** test); // Sets the parameters for subsequent calls to Create. void SetParameters(bool create, DeathTest::TestRole role, int status, bool passed); // Accessors. int AssumeRoleCalls() const { return assume_role_calls_; } int WaitCalls() const { return wait_calls_; } int PassedCalls() const { return passed_args_.size(); } bool PassedArgument(int n) const { return passed_args_[n]; } int AbortCalls() const { return abort_args_.size(); } DeathTest::AbortReason AbortArgument(int n) const { return abort_args_[n]; } bool TestDeleted() const { return test_deleted_; } private: friend class MockDeathTest; // If true, Create will return a MockDeathTest; otherwise it returns // NULL. bool create_; // The value a MockDeathTest will return from its AssumeRole method. DeathTest::TestRole role_; // The value a MockDeathTest will return from its Wait method. int status_; // The value a MockDeathTest will return from its Passed method. bool passed_; // Number of times AssumeRole was called. int assume_role_calls_; // Number of times Wait was called. int wait_calls_; // The arguments to the calls to Passed since the last call to // SetParameters. std::vector<bool> passed_args_; // The arguments to the calls to Abort since the last call to // SetParameters. std::vector<DeathTest::AbortReason> abort_args_; // True if the last MockDeathTest returned by Create has been // deleted. bool test_deleted_; }; // A DeathTest implementation useful in testing. It returns values set // at its creation from its various inherited DeathTest methods, and // reports calls to those methods to its parent MockDeathTestFactory // object. class MockDeathTest : public DeathTest { public: MockDeathTest(MockDeathTestFactory *parent, TestRole role, int status, bool passed) : parent_(parent), role_(role), status_(status), passed_(passed) { } virtual ~MockDeathTest() { parent_->test_deleted_ = true; } virtual TestRole AssumeRole() { ++parent_->assume_role_calls_; return role_; } virtual int Wait() { ++parent_->wait_calls_; return status_; } virtual bool Passed(bool exit_status_ok) { parent_->passed_args_.push_back(exit_status_ok); return passed_; } virtual void Abort(AbortReason reason) { parent_->abort_args_.push_back(reason); } private: MockDeathTestFactory* const parent_; const TestRole role_; const int status_; const bool passed_; }; // MockDeathTestFactory constructor. MockDeathTestFactory::MockDeathTestFactory() : create_(true), role_(DeathTest::OVERSEE_TEST), status_(0), passed_(true), assume_role_calls_(0), wait_calls_(0), passed_args_(), abort_args_() { } // Sets the parameters for subsequent calls to Create. void MockDeathTestFactory::SetParameters(bool create, DeathTest::TestRole role, int status, bool passed) { create_ = create; role_ = role; status_ = status; passed_ = passed; assume_role_calls_ = 0; wait_calls_ = 0; passed_args_.clear(); abort_args_.clear(); } // Sets test to NULL (if create_ is false) or to the address of a new // MockDeathTest object with parameters taken from the last call // to SetParameters (if create_ is true). Always returns true. bool MockDeathTestFactory::Create(const char* /*statement*/, const ::testing::internal::RE* /*regex*/, const char* /*file*/, int /*line*/, DeathTest** test) { test_deleted_ = false; if (create_) { *test = new MockDeathTest(this, role_, status_, passed_); } else { *test = NULL; } return true; } // A test fixture for testing the logic of the GTEST_DEATH_TEST_ macro. // It installs a MockDeathTestFactory that is used for the duration // of the test case. class MacroLogicDeathTest : public testing::Test { protected: static testing::internal::ReplaceDeathTestFactory* replacer_; static MockDeathTestFactory* factory_; static void SetUpTestCase() { factory_ = new MockDeathTestFactory; replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_); } static void TearDownTestCase() { delete replacer_; replacer_ = NULL; delete factory_; factory_ = NULL; } // Runs a death test that breaks the rules by returning. Such a death // test cannot be run directly from a test routine that uses a // MockDeathTest, or the remainder of the routine will not be executed. static void RunReturningDeathTest(bool* flag) { ASSERT_DEATH({ // NOLINT *flag = true; return; }, ""); } }; testing::internal::ReplaceDeathTestFactory* MacroLogicDeathTest::replacer_ = NULL; MockDeathTestFactory* MacroLogicDeathTest::factory_ = NULL; // Test that nothing happens when the factory doesn't return a DeathTest: TEST_F(MacroLogicDeathTest, NothingHappens) { bool flag = false; factory_->SetParameters(false, DeathTest::OVERSEE_TEST, 0, true); EXPECT_DEATH(flag = true, ""); EXPECT_FALSE(flag); EXPECT_EQ(0, factory_->AssumeRoleCalls()); EXPECT_EQ(0, factory_->WaitCalls()); EXPECT_EQ(0, factory_->PassedCalls()); EXPECT_EQ(0, factory_->AbortCalls()); EXPECT_FALSE(factory_->TestDeleted()); } // Test that the parent process doesn't run the death test code, // and that the Passed method returns false when the (simulated) // child process exits with status 0: TEST_F(MacroLogicDeathTest, ChildExitsSuccessfully) { bool flag = false; factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 0, true); EXPECT_DEATH(flag = true, ""); EXPECT_FALSE(flag); EXPECT_EQ(1, factory_->AssumeRoleCalls()); EXPECT_EQ(1, factory_->WaitCalls()); ASSERT_EQ(1, factory_->PassedCalls()); EXPECT_FALSE(factory_->PassedArgument(0)); EXPECT_EQ(0, factory_->AbortCalls()); EXPECT_TRUE(factory_->TestDeleted()); } // Tests that the Passed method was given the argument "true" when // the (simulated) child process exits with status 1: TEST_F(MacroLogicDeathTest, ChildExitsUnsuccessfully) { bool flag = false; factory_->SetParameters(true, DeathTest::OVERSEE_TEST, 1, true); EXPECT_DEATH(flag = true, ""); EXPECT_FALSE(flag); EXPECT_EQ(1, factory_->AssumeRoleCalls()); EXPECT_EQ(1, factory_->WaitCalls()); ASSERT_EQ(1, factory_->PassedCalls()); EXPECT_TRUE(factory_->PassedArgument(0)); EXPECT_EQ(0, factory_->AbortCalls()); EXPECT_TRUE(factory_->TestDeleted()); } // Tests that the (simulated) child process executes the death test // code, and is aborted with the correct AbortReason if it // executes a return statement. TEST_F(MacroLogicDeathTest, ChildPerformsReturn) { bool flag = false; factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true); RunReturningDeathTest(&flag); EXPECT_TRUE(flag); EXPECT_EQ(1, factory_->AssumeRoleCalls()); EXPECT_EQ(0, factory_->WaitCalls()); EXPECT_EQ(0, factory_->PassedCalls()); EXPECT_EQ(1, factory_->AbortCalls()); EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT, factory_->AbortArgument(0)); EXPECT_TRUE(factory_->TestDeleted()); } // Tests that the (simulated) child process is aborted with the // correct AbortReason if it does not die. TEST_F(MacroLogicDeathTest, ChildDoesNotDie) { bool flag = false; factory_->SetParameters(true, DeathTest::EXECUTE_TEST, 0, true); EXPECT_DEATH(flag = true, ""); EXPECT_TRUE(flag); EXPECT_EQ(1, factory_->AssumeRoleCalls()); EXPECT_EQ(0, factory_->WaitCalls()); EXPECT_EQ(0, factory_->PassedCalls()); // This time there are two calls to Abort: one since the test didn't // die, and another from the ReturnSentinel when it's destroyed. The // sentinel normally isn't destroyed if a test doesn't die, since // _exit(2) is called in that case by ForkingDeathTest, but not by // our MockDeathTest. ASSERT_EQ(2, factory_->AbortCalls()); EXPECT_EQ(DeathTest::TEST_DID_NOT_DIE, factory_->AbortArgument(0)); EXPECT_EQ(DeathTest::TEST_ENCOUNTERED_RETURN_STATEMENT, factory_->AbortArgument(1)); EXPECT_TRUE(factory_->TestDeleted()); } // Tests that a successful death test does not register a successful // test part. TEST(SuccessRegistrationDeathTest, NoSuccessPart) { EXPECT_DEATH(_exit(1), ""); EXPECT_EQ(0, GetUnitTestImpl()->current_test_result()->total_part_count()); } TEST(StreamingAssertionsDeathTest, DeathTest) { EXPECT_DEATH(_exit(1), "") << "unexpected failure"; ASSERT_DEATH(_exit(1), "") << "unexpected failure"; EXPECT_NONFATAL_FAILURE({ // NOLINT EXPECT_DEATH(_exit(0), "") << "expected failure"; }, "expected failure"); EXPECT_FATAL_FAILURE({ // NOLINT ASSERT_DEATH(_exit(0), "") << "expected failure"; }, "expected failure"); } // Tests that GetLastErrnoDescription returns an empty string when the // last error is 0 and non-empty string when it is non-zero. TEST(GetLastErrnoDescription, GetLastErrnoDescriptionWorks) { errno = ENOENT; EXPECT_STRNE("", GetLastErrnoDescription().c_str()); errno = 0; EXPECT_STREQ("", GetLastErrnoDescription().c_str()); } # if GTEST_OS_WINDOWS TEST(AutoHandleTest, AutoHandleWorks) { HANDLE handle = ::CreateEvent(NULL, FALSE, FALSE, NULL); ASSERT_NE(INVALID_HANDLE_VALUE, handle); // Tests that the AutoHandle is correctly initialized with a handle. testing::internal::AutoHandle auto_handle(handle); EXPECT_EQ(handle, auto_handle.Get()); // Tests that Reset assigns INVALID_HANDLE_VALUE. // Note that this cannot verify whether the original handle is closed. auto_handle.Reset(); EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle.Get()); // Tests that Reset assigns the new handle. // Note that this cannot verify whether the original handle is closed. handle = ::CreateEvent(NULL, FALSE, FALSE, NULL); ASSERT_NE(INVALID_HANDLE_VALUE, handle); auto_handle.Reset(handle); EXPECT_EQ(handle, auto_handle.Get()); // Tests that AutoHandle contains INVALID_HANDLE_VALUE by default. testing::internal::AutoHandle auto_handle2; EXPECT_EQ(INVALID_HANDLE_VALUE, auto_handle2.Get()); } # endif // GTEST_OS_WINDOWS # if GTEST_OS_WINDOWS typedef unsigned __int64 BiggestParsable; typedef signed __int64 BiggestSignedParsable; const BiggestParsable kBiggestParsableMax = ULLONG_MAX; const BiggestSignedParsable kBiggestSignedParsableMax = LLONG_MAX; # else typedef unsigned long long BiggestParsable; typedef signed long long BiggestSignedParsable; const BiggestParsable kBiggestParsableMax = ::std::numeric_limits<BiggestParsable>::max(); const BiggestSignedParsable kBiggestSignedParsableMax = ::std::numeric_limits<BiggestSignedParsable>::max(); # endif // GTEST_OS_WINDOWS TEST(ParseNaturalNumberTest, RejectsInvalidFormat) { BiggestParsable result = 0; // Rejects non-numbers. EXPECT_FALSE(ParseNaturalNumber(String("non-number string"), &result)); // Rejects numbers with whitespace prefix. EXPECT_FALSE(ParseNaturalNumber(String(" 123"), &result)); // Rejects negative numbers. EXPECT_FALSE(ParseNaturalNumber(String("-123"), &result)); // Rejects numbers starting with a plus sign. EXPECT_FALSE(ParseNaturalNumber(String("+123"), &result)); errno = 0; } TEST(ParseNaturalNumberTest, RejectsOverflownNumbers) { BiggestParsable result = 0; EXPECT_FALSE(ParseNaturalNumber(String("99999999999999999999999"), &result)); signed char char_result = 0; EXPECT_FALSE(ParseNaturalNumber(String("200"), &char_result)); errno = 0; } TEST(ParseNaturalNumberTest, AcceptsValidNumbers) { BiggestParsable result = 0; result = 0; ASSERT_TRUE(ParseNaturalNumber(String("123"), &result)); EXPECT_EQ(123U, result); // Check 0 as an edge case. result = 1; ASSERT_TRUE(ParseNaturalNumber(String("0"), &result)); EXPECT_EQ(0U, result); result = 1; ASSERT_TRUE(ParseNaturalNumber(String("00000"), &result)); EXPECT_EQ(0U, result); } TEST(ParseNaturalNumberTest, AcceptsTypeLimits) { Message msg; msg << kBiggestParsableMax; BiggestParsable result = 0; EXPECT_TRUE(ParseNaturalNumber(msg.GetString(), &result)); EXPECT_EQ(kBiggestParsableMax, result); Message msg2; msg2 << kBiggestSignedParsableMax; BiggestSignedParsable signed_result = 0; EXPECT_TRUE(ParseNaturalNumber(msg2.GetString(), &signed_result)); EXPECT_EQ(kBiggestSignedParsableMax, signed_result); Message msg3; msg3 << INT_MAX; int int_result = 0; EXPECT_TRUE(ParseNaturalNumber(msg3.GetString(), &int_result)); EXPECT_EQ(INT_MAX, int_result); Message msg4; msg4 << UINT_MAX; unsigned int uint_result = 0; EXPECT_TRUE(ParseNaturalNumber(msg4.GetString(), &uint_result)); EXPECT_EQ(UINT_MAX, uint_result); } TEST(ParseNaturalNumberTest, WorksForShorterIntegers) { short short_result = 0; ASSERT_TRUE(ParseNaturalNumber(String("123"), &short_result)); EXPECT_EQ(123, short_result); signed char char_result = 0; ASSERT_TRUE(ParseNaturalNumber(String("123"), &char_result)); EXPECT_EQ(123, char_result); } # if GTEST_OS_WINDOWS TEST(EnvironmentTest, HandleFitsIntoSizeT) { // TODO(vladl@google.com): Remove this test after this condition is verified // in a static assertion in gtest-death-test.cc in the function // GetStatusFileDescriptor. ASSERT_TRUE(sizeof(HANDLE) <= sizeof(size_t)); } # endif // GTEST_OS_WINDOWS // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED trigger // failures when death tests are available on the system. TEST(ConditionalDeathMacrosDeathTest, ExpectsDeathWhenDeathTestsAvailable) { EXPECT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestExpectMacro"), "death inside CondDeathTestExpectMacro"); ASSERT_DEATH_IF_SUPPORTED(DieInside("CondDeathTestAssertMacro"), "death inside CondDeathTestAssertMacro"); // Empty statement will not crash, which must trigger a failure. EXPECT_NONFATAL_FAILURE(EXPECT_DEATH_IF_SUPPORTED(;, ""), ""); EXPECT_FATAL_FAILURE(ASSERT_DEATH_IF_SUPPORTED(;, ""), ""); } #else using testing::internal::CaptureStderr; using testing::internal::GetCapturedStderr; using testing::internal::String; // Tests that EXPECT_DEATH_IF_SUPPORTED/ASSERT_DEATH_IF_SUPPORTED are still // defined but do not trigger failures when death tests are not available on // the system. TEST(ConditionalDeathMacrosTest, WarnsWhenDeathTestsNotAvailable) { // Empty statement will not crash, but that should not trigger a failure // when death tests are not supported. CaptureStderr(); EXPECT_DEATH_IF_SUPPORTED(;, ""); String output = GetCapturedStderr(); ASSERT_TRUE(NULL != strstr(output.c_str(), "Death tests are not supported on this platform")); ASSERT_TRUE(NULL != strstr(output.c_str(), ";")); // The streamed message should not be printed as there is no test failure. CaptureStderr(); EXPECT_DEATH_IF_SUPPORTED(;, "") << "streamed message"; output = GetCapturedStderr(); ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message")); CaptureStderr(); ASSERT_DEATH_IF_SUPPORTED(;, ""); // NOLINT output = GetCapturedStderr(); ASSERT_TRUE(NULL != strstr(output.c_str(), "Death tests are not supported on this platform")); ASSERT_TRUE(NULL != strstr(output.c_str(), ";")); CaptureStderr(); ASSERT_DEATH_IF_SUPPORTED(;, "") << "streamed message"; // NOLINT output = GetCapturedStderr(); ASSERT_TRUE(NULL == strstr(output.c_str(), "streamed message")); } void FuncWithAssert(int* n) { ASSERT_DEATH_IF_SUPPORTED(return;, ""); (*n)++; } // Tests that ASSERT_DEATH_IF_SUPPORTED does not return from the current // function (as ASSERT_DEATH does) if death tests are not supported. TEST(ConditionalDeathMacrosTest, AssertDeatDoesNotReturnhIfUnsupported) { int n = 0; FuncWithAssert(&n); EXPECT_EQ(1, n); } #endif // GTEST_HAS_DEATH_TEST // Tests that the death test macros expand to code which may or may not // be followed by operator<<, and that in either case the complete text // comprises only a single C++ statement. // // The syntax should work whether death tests are available or not. TEST(ConditionalDeathMacrosSyntaxDeathTest, SingleStatement) { if (AlwaysFalse()) // This would fail if executed; this is a compilation test only ASSERT_DEATH_IF_SUPPORTED(return, ""); if (AlwaysTrue()) EXPECT_DEATH_IF_SUPPORTED(_exit(1), ""); else // This empty "else" branch is meant to ensure that EXPECT_DEATH // doesn't expand into an "if" statement without an "else" ; // NOLINT if (AlwaysFalse()) ASSERT_DEATH_IF_SUPPORTED(return, "") << "did not die"; if (AlwaysFalse()) ; // NOLINT else EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << 1 << 2 << 3; } // Tests that conditional death test macros expand to code which interacts // well with switch statements. TEST(ConditionalDeathMacrosSyntaxDeathTest, SwitchStatement) { // Microsoft compiler usually complains about switch statements without // case labels. We suppress that warning for this test. #ifdef _MSC_VER # pragma warning(push) # pragma warning(disable: 4065) #endif // _MSC_VER switch (0) default: ASSERT_DEATH_IF_SUPPORTED(_exit(1), "") << "exit in default switch handler"; switch (0) case 0: EXPECT_DEATH_IF_SUPPORTED(_exit(1), "") << "exit in switch case"; #ifdef _MSC_VER # pragma warning(pop) #endif // _MSC_VER } // Tests that a test case whose name ends with "DeathTest" works fine // on Windows. TEST(NotADeathTest, Test) { SUCCEED(); }