tor-browser

googletest-death-test-test.cc (48292B)

---

// 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.

//
// 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 <fcntl.h>           // For O_BINARY
#  include <direct.h>          // For chdir().
#  include <io.h>
# else
#  include <unistd.h>
#  include <sys/wait.h>        // For waitpid.
# endif  // GTEST_OS_WINDOWS

# include <limits.h>
# include <signal.h>
# include <stdio.h>

# if GTEST_OS_LINUX
#  include <sys/time.h>
# endif  // GTEST_OS_LINUX

# include "gtest/gtest-spi.h"
# include "src/gtest-internal-inl.h"

namespace posix = ::testing::internal::posix;

using testing::ContainsRegex;
using testing::Matcher;
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::InDeathTestChild;
using testing::internal::ParseNaturalNumber;

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

namespace {

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()) {}

 ~TestForDeathTest() override { 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 if and only if 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 if and only if 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

// Death in dbg due to Windows CRT assertion failure, not opt.
int DieInCRTDebugElse12(int* sideeffect) {
 if (sideeffect) *sideeffect = 12;

 // Create an invalid fd by closing a valid one
 int fdpipe[2];
 EXPECT_EQ(_pipe(fdpipe, 256, O_BINARY), 0);
 EXPECT_EQ(_close(fdpipe[0]), 0);
 EXPECT_EQ(_close(fdpipe[1]), 0);

 // _dup() should crash in debug mode
 EXPECT_EQ(_dup(fdpipe[0]), -1);

 return 12;
}

#endif  // GTEST_OS_WINDOWS

# if GTEST_OS_WINDOWS || GTEST_OS_FUCHSIA

// 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 || GTEST_OS_FUCHSIA

// The following code intentionally tests a suboptimal syntax.
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-else"
#pragma GCC diagnostic ignored "-Wempty-body"
#pragma GCC diagnostic ignored "-Wpragmas"
#endif
// 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;
}
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif

# if GTEST_USES_PCRE

void DieWithEmbeddedNul() {
 fprintf(stderr, "Hello%cmy null world.\n", '\0');
 fflush(stderr);
 _exit(1);
}

// Tests that EXPECT_DEATH and ASSERT_DEATH work when the error
// message has a NUL character in it.
TEST_F(TestForDeathTest, EmbeddedNulInMessage) {
 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.
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4065)

 switch (0)
   default:
     ASSERT_DEATH(_exit(1), "") << "exit in default switch handler";

 switch (0)
   case 0:
     EXPECT_DEATH(_exit(1), "") << "exit in switch case";

 GTEST_DISABLE_MSC_WARNINGS_POP_()
}

// 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), "");
}

# if GTEST_OS_LINUX
void SigprofAction(int, siginfo_t*, void*) { /* no op */ }

// Sets SIGPROF action and ITIMER_PROF timer (interval: 1ms).
void SetSigprofActionAndTimer() {
 struct sigaction signal_action;
 memset(&signal_action, 0, sizeof(signal_action));
 sigemptyset(&signal_action.sa_mask);
 signal_action.sa_sigaction = SigprofAction;
 signal_action.sa_flags = SA_RESTART | SA_SIGINFO;
 ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, nullptr));
 // timer comes second, to avoid SIGPROF premature delivery, as suggested at
 // https://www.gnu.org/software/libc/manual/html_node/Setting-an-Alarm.html
 struct itimerval timer;
 timer.it_interval.tv_sec = 0;
 timer.it_interval.tv_usec = 1;
 timer.it_value = timer.it_interval;
 ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
}

// Disables ITIMER_PROF timer and ignores SIGPROF signal.
void DisableSigprofActionAndTimer(struct sigaction* old_signal_action) {
 struct itimerval timer;
 timer.it_interval.tv_sec = 0;
 timer.it_interval.tv_usec = 0;
 timer.it_value = timer.it_interval;
 ASSERT_EQ(0, setitimer(ITIMER_PROF, &timer, nullptr));
 struct sigaction signal_action;
 memset(&signal_action, 0, sizeof(signal_action));
 sigemptyset(&signal_action.sa_mask);
 signal_action.sa_handler = SIG_IGN;
 ASSERT_EQ(0, sigaction(SIGPROF, &signal_action, old_signal_action));
}

// Tests that death tests work when SIGPROF handler and timer are set.
TEST_F(TestForDeathTest, FastSigprofActionSet) {
 testing::GTEST_FLAG(death_test_style) = "fast";
 SetSigprofActionAndTimer();
 EXPECT_DEATH(_exit(1), "");
 struct sigaction old_signal_action;
 DisableSigprofActionAndTimer(&old_signal_action);
 EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
}

TEST_F(TestForDeathTest, ThreadSafeSigprofActionSet) {
 testing::GTEST_FLAG(death_test_style) = "threadsafe";
 SetSigprofActionAndTimer();
 EXPECT_DEATH(_exit(1), "");
 struct sigaction old_signal_action;
 DisableSigprofActionAndTimer(&old_signal_action);
 EXPECT_TRUE(old_signal_action.sa_sigaction == SigprofAction);
}
# endif  // GTEST_OS_LINUX

// 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), "");
}

# if GTEST_HAS_CLONE && GTEST_HAS_PTHREAD

bool pthread_flag;

void SetPthreadFlag() {
 pthread_flag = true;
}

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, nullptr, nullptr));
   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_USES_PCRE

 const ::std::string regex_std_str(regex_c_str);
 EXPECT_DEATH(GlobalFunction(), regex_std_str);

 // This one is tricky; a temporary pointer into another temporary.  Reference
 // lifetime extension of the pointer is not sufficient.
 EXPECT_DEATH(GlobalFunction(), ::std::string(regex_c_str).c_str());

# endif  // !GTEST_USES_PCRE
}

// 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 if and only if 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, you can stream a
// message to it, and 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;

 // Put the regex in a local variable to make sure we don't get an "unused"
 // warning in opt mode.
 const char* regex = "death.*DieInDebugElse12";

 EXPECT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), regex)
     << "Must accept a streamed message";

# 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
}

# if GTEST_OS_WINDOWS

// Tests that EXPECT_DEBUG_DEATH works as expected when in debug mode
// the Windows CRT crashes the process with an assertion failure.
// 1. Asserts on death.
// 2. Has no side effect (doesn't pop up a window or wait for user input).
//
// And in opt mode, it:
// 1.  Has side effects but does not assert.
TEST_F(TestForDeathTest, CRTDebugDeath) {
 int sideeffect = 0;

 // Put the regex in a local variable to make sure we don't get an "unused"
 // warning in opt mode.
 const char* regex = "dup.* : Assertion failed";

 EXPECT_DEBUG_DEATH(DieInCRTDebugElse12(&sideeffect), regex)
     << "Must accept a streamed message";

# 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
}

# endif  // GTEST_OS_WINDOWS

// Tests that ASSERT_DEBUG_DEATH works as expected, that is, you can stream a
// message to it, and 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, TestAssertDebugDeath) {
 int sideeffect = 0;

 ASSERT_DEBUG_DEATH(DieInDebugElse12(&sideeffect), "death.*DieInDebugElse12")
     << "Must accept a streamed message";

# 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;
 GTEST_LOG_(INFO) << "Before ASSERT_DEBUG_DEATH";
 ASSERT_DEBUG_DEATH(GTEST_LOG_(INFO) << "In ASSERT_DEBUG_DEATH"; return, "")
     << "This is expected to fail.";
 GTEST_LOG_(INFO) << "After ASSERT_DEBUG_DEATH";
 *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);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts2) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts3) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts4) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts5) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts6) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts7) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts8) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts9) {
 static bool aborted;
 aborted = false;
 EXPECT_FATAL_FAILURE(AssertDebugDeathHelper(&aborted), "");
 EXPECT_TRUE(aborted);
}

TEST_F(TestForDeathTest, AssertDebugDeathAborts10) {
 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 https://msdn.microsoft.com/en-us/query-bi/m/dwwzkt4c.
 EXPECT_EXIT(raise(SIGABRT), testing::ExitedWithCode(3), "") << "b_ar";

# elif !GTEST_OS_FUCHSIA

 // Fuchsia has no unix signals.
 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();
 bool Create(const char* statement,
             testing::Matcher<const std::string&> matcher, const char* file,
             int line, DeathTest** test) override;

 // 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_; }
 size_t PassedCalls() const { return passed_args_.size(); }
 bool PassedArgument(int n) const {
   return passed_args_[static_cast<size_t>(n)];
 }
 size_t AbortCalls() const { return abort_args_.size(); }
 DeathTest::AbortReason AbortArgument(int n) const {
   return abort_args_[static_cast<size_t>(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) {
 }
 ~MockDeathTest() override { parent_->test_deleted_ = true; }
 TestRole AssumeRole() override {
   ++parent_->assume_role_calls_;
   return role_;
 }
 int Wait() override {
   ++parent_->wait_calls_;
   return status_;
 }
 bool Passed(bool exit_status_ok) override {
   parent_->passed_args_.push_back(exit_status_ok);
   return passed_;
 }
 void Abort(AbortReason reason) override {
   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*/, testing::Matcher<const std::string&> /*matcher*/,
   const char* /*file*/, int /*line*/, DeathTest** test) {
 test_deleted_ = false;
 if (create_) {
   *test = new MockDeathTest(this, role_, status_, passed_);
 } else {
   *test = nullptr;
 }
 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 SetUpTestSuite() {
   factory_ = new MockDeathTestFactory;
   replacer_ = new testing::internal::ReplaceDeathTestFactory(factory_);
 }

 static void TearDownTestSuite() {
   delete replacer_;
   replacer_ = nullptr;
   delete factory_;
   factory_ = nullptr;
 }

 // 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_ =
   nullptr;
MockDeathTestFactory* MacroLogicDeathTest::factory_ = nullptr;

// 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(0U, factory_->PassedCalls());
 EXPECT_EQ(0U, 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(1U, factory_->PassedCalls());
 EXPECT_FALSE(factory_->PassedArgument(0));
 EXPECT_EQ(0U, 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(1U, factory_->PassedCalls());
 EXPECT_TRUE(factory_->PassedArgument(0));
 EXPECT_EQ(0U, 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(0U, factory_->PassedCalls());
 EXPECT_EQ(1U, 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(0U, 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(2U, 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;
# else
typedef unsigned long long BiggestParsable;
typedef signed long long BiggestSignedParsable;
# endif  // GTEST_OS_WINDOWS

// We cannot use std::numeric_limits<T>::max() as it clashes with the
// max() macro defined by <windows.h>.
const BiggestParsable kBiggestParsableMax = ULLONG_MAX;
const BiggestSignedParsable kBiggestSignedParsableMax = LLONG_MAX;

TEST(ParseNaturalNumberTest, RejectsInvalidFormat) {
 BiggestParsable result = 0;

 // Rejects non-numbers.
 EXPECT_FALSE(ParseNaturalNumber("non-number string", &result));

 // Rejects numbers with whitespace prefix.
 EXPECT_FALSE(ParseNaturalNumber(" 123", &result));

 // Rejects negative numbers.
 EXPECT_FALSE(ParseNaturalNumber("-123", &result));

 // Rejects numbers starting with a plus sign.
 EXPECT_FALSE(ParseNaturalNumber("+123", &result));
 errno = 0;
}

TEST(ParseNaturalNumberTest, RejectsOverflownNumbers) {
 BiggestParsable result = 0;

 EXPECT_FALSE(ParseNaturalNumber("99999999999999999999999", &result));

 signed char char_result = 0;
 EXPECT_FALSE(ParseNaturalNumber("200", &char_result));
 errno = 0;
}

TEST(ParseNaturalNumberTest, AcceptsValidNumbers) {
 BiggestParsable result = 0;

 result = 0;
 ASSERT_TRUE(ParseNaturalNumber("123", &result));
 EXPECT_EQ(123U, result);

 // Check 0 as an edge case.
 result = 1;
 ASSERT_TRUE(ParseNaturalNumber("0", &result));
 EXPECT_EQ(0U, result);

 result = 1;
 ASSERT_TRUE(ParseNaturalNumber("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("123", &short_result));
 EXPECT_EQ(123, short_result);

 signed char char_result = 0;
 ASSERT_TRUE(ParseNaturalNumber("123", &char_result));
 EXPECT_EQ(123, char_result);
}

# if GTEST_OS_WINDOWS
TEST(EnvironmentTest, HandleFitsIntoSizeT) {
 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(;, ""), "");
}

TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInFastStyle) {
 testing::GTEST_FLAG(death_test_style) = "fast";
 EXPECT_FALSE(InDeathTestChild());
 EXPECT_DEATH({
   fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
   fflush(stderr);
   _exit(1);
 }, "Inside");
}

TEST(InDeathTestChildDeathTest, ReportsDeathTestCorrectlyInThreadSafeStyle) {
 testing::GTEST_FLAG(death_test_style) = "threadsafe";
 EXPECT_FALSE(InDeathTestChild());
 EXPECT_DEATH({
   fprintf(stderr, InDeathTestChild() ? "Inside" : "Outside");
   fflush(stderr);
   _exit(1);
 }, "Inside");
}

void DieWithMessage(const char* message) {
 fputs(message, stderr);
 fflush(stderr);  // Make sure the text is printed before the process exits.
 _exit(1);
}

TEST(MatcherDeathTest, DoesNotBreakBareRegexMatching) {
 // googletest tests this, of course; here we ensure that including googlemock
 // has not broken it.
#if GTEST_USES_POSIX_RE
 EXPECT_DEATH(DieWithMessage("O, I die, Horatio."), "I d[aeiou]e");
#else
 EXPECT_DEATH(DieWithMessage("O, I die, Horatio."), "I di?e");
#endif
}

TEST(MatcherDeathTest, MonomorphicMatcherMatches) {
 EXPECT_DEATH(DieWithMessage("Behind O, I am slain!"),
              Matcher<const std::string&>(ContainsRegex("I am slain")));
}

TEST(MatcherDeathTest, MonomorphicMatcherDoesNotMatch) {
 EXPECT_NONFATAL_FAILURE(
     EXPECT_DEATH(
         DieWithMessage("Behind O, I am slain!"),
         Matcher<const std::string&>(ContainsRegex("Ow, I am slain"))),
     "Expected: contains regular expression \"Ow, I am slain\"");
}

TEST(MatcherDeathTest, PolymorphicMatcherMatches) {
 EXPECT_DEATH(DieWithMessage("The rest is silence."),
              ContainsRegex("rest is silence"));
}

TEST(MatcherDeathTest, PolymorphicMatcherDoesNotMatch) {
 EXPECT_NONFATAL_FAILURE(
     EXPECT_DEATH(DieWithMessage("The rest is silence."),
                  ContainsRegex("rest is science")),
     "Expected: contains regular expression \"rest is science\"");
}

}  // namespace

#else  // !GTEST_HAS_DEATH_TEST follows

namespace {

using testing::internal::CaptureStderr;
using testing::internal::GetCapturedStderr;

// 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(;, "");
 std::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);
}

}  // namespace

#endif  // !GTEST_HAS_DEATH_TEST

namespace {

// The following code intentionally tests a suboptimal syntax.
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdangling-else"
#pragma GCC diagnostic ignored "-Wempty-body"
#pragma GCC diagnostic ignored "-Wpragmas"
#endif
// 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;
}
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif

// 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.
 GTEST_DISABLE_MSC_WARNINGS_PUSH_(4065)

 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";

 GTEST_DISABLE_MSC_WARNINGS_POP_()
}

// Tests that a test case whose name ends with "DeathTest" works fine
// on Windows.
TEST(NotADeathTest, Test) {
 SUCCEED();
}

}  // namespace