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googletest
Commit 8bdb31e0 by zhanyong.wan
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Adds the command line flags needed for test shuffling. Most code by Josh Kelley.

parent 89080477
Showing with 249 additions and 12 deletions
include/gtest/gtest.h
......@@ -119,6 +119,9 @@ GTEST_DECLARE_string_(output);
// test.
GTEST_DECLARE_bool_(print_time);
// This flag specifies the random number seed.
GTEST_DECLARE_int32_(random_seed);
// This flag sets how many times the tests are repeated. The default value
// is 1. If the value is -1 the tests are repeating forever.
GTEST_DECLARE_int32_(repeat);
......@@ -127,6 +130,9 @@ GTEST_DECLARE_int32_(repeat);
// stack frames in failure stack traces.
GTEST_DECLARE_bool_(show_internal_stack_frames);
// When this flag is specified, tests' order is randomized on every run.
GTEST_DECLARE_bool_(shuffle);
// This flag specifies the maximum number of stack frames to be
// printed in a failure message.
GTEST_DECLARE_int32_(stack_trace_depth);
......@@ -798,6 +804,9 @@ class UnitTest {
// or NULL if no test is running.
const TestInfo* current_test_info() const;
// Returns the random seed used at the start of the current test run.
int random_seed() const;
#if GTEST_HAS_PARAM_TEST
// Returns the ParameterizedTestCaseRegistry object used to keep track of
// value-parameterized tests and instantiate and register them.
......
scons/SConscript
......@@ -332,7 +332,7 @@ GtestBinary(env_without_rtti, 'gtest_no_rtti_test', None,
# Use the GTEST_BUILD_SAMPLES build variable to control building of samples.
# In your SConstruct file, add
# vars = Variables()
# vars.Add(BoolVariable('GTEST_BUILD_SAMPLES', 'Build samples', True))
# vars.Add(BoolVariable('GTEST_BUILD_SAMPLES', 'Build samples', False))
# my_environment = Environment(variables = vars, ...)
# Then, in the command line use GTEST_BUILD_SAMPLES=true to enable them.
if env.get('GTEST_BUILD_SAMPLES', False):
......
src/gtest-internal-inl.h
......@@ -87,9 +87,42 @@ const char kFilterFlag[] = "filter";
const char kListTestsFlag[] = "list_tests";
const char kOutputFlag[] = "output";
const char kPrintTimeFlag[] = "print_time";
const char kRandomSeedFlag[] = "random_seed";
const char kRepeatFlag[] = "repeat";
const char kShuffleFlag[] = "shuffle";
const char kThrowOnFailureFlag[] = "throw_on_failure";
// A valid random seed must be in [1, kMaxRandomSeed].
const unsigned int kMaxRandomSeed = 99999;
// Returns the current time in milliseconds.
TimeInMillis GetTimeInMillis();
// Returns a random seed in range [1, kMaxRandomSeed] based on the
// given --gtest_random_seed flag value.
inline int GetRandomSeedFromFlag(Int32 random_seed_flag) {
const unsigned int raw_seed = (random_seed_flag == 0) ?
static_cast<unsigned int>(GetTimeInMillis()) :
static_cast<unsigned int>(random_seed_flag);
// Normalizes the actual seed to range [1, kMaxRandomSeed] such that
// it's easy to type.
const int normalized_seed =
static_cast<int>((raw_seed - 1U) % kMaxRandomSeed) + 1;
return normalized_seed;
}
// Returns the first valid random seed after 'seed'. The behavior is
// undefined if 'seed' is invalid. The seed after kMaxRandomSeed is
// considered to be 1.
inline int GetNextRandomSeed(int seed) {
GTEST_CHECK_(1 <= seed && seed <= kMaxRandomSeed)
<< "Invalid random seed " << seed << " - must be in [1, "
<< kMaxRandomSeed << "].";
const int next_seed = seed + 1;
return (next_seed > kMaxRandomSeed) ? 1 : next_seed;
}
// This class saves the values of all Google Test flags in its c'tor, and
// restores them in its d'tor.
class GTestFlagSaver {
......@@ -107,7 +140,9 @@ class GTestFlagSaver {
list_tests_ = GTEST_FLAG(list_tests);
output_ = GTEST_FLAG(output);
print_time_ = GTEST_FLAG(print_time);
random_seed_ = GTEST_FLAG(random_seed);
repeat_ = GTEST_FLAG(repeat);
shuffle_ = GTEST_FLAG(shuffle);
throw_on_failure_ = GTEST_FLAG(throw_on_failure);
}
......@@ -124,7 +159,9 @@ class GTestFlagSaver {
GTEST_FLAG(list_tests) = list_tests_;
GTEST_FLAG(output) = output_;
GTEST_FLAG(print_time) = print_time_;
GTEST_FLAG(random_seed) = random_seed_;
GTEST_FLAG(repeat) = repeat_;
GTEST_FLAG(shuffle) = shuffle_;
GTEST_FLAG(throw_on_failure) = throw_on_failure_;
}
private:
......@@ -141,7 +178,9 @@ class GTestFlagSaver {
String output_;
bool print_time_;
bool pretty_;
internal::Int32 random_seed_;
internal::Int32 repeat_;
bool shuffle_;
bool throw_on_failure_;
} GTEST_ATTRIBUTE_UNUSED_;
......@@ -884,6 +923,9 @@ class UnitTestImpl {
friend class ReplaceDeathTestFactory;
#endif // GTEST_HAS_DEATH_TEST
// Gets the random seed used at the start of the current test run.
int random_seed() const { return random_seed_; }
private:
friend class ::testing::UnitTest;
......@@ -932,7 +974,7 @@ class UnitTestImpl {
// This points to the TestCase for the currently running test. It
// changes as Google Test goes through one test case after another.
// When no test is running, this is set to NULL and Google Test
// stores assertion results in ad_hoc_test_result_. Initally NULL.
// stores assertion results in ad_hoc_test_result_. Initially NULL.
TestCase* current_test_case_;
// This points to the TestInfo for the currently running test. It
......@@ -963,6 +1005,9 @@ class UnitTestImpl {
// desired.
OsStackTraceGetterInterface* os_stack_trace_getter_;
// The random number seed used at the beginning of the test run.
int random_seed_;
// How long the test took to run, in milliseconds.
TimeInMillis elapsed_time_;
......
src/gtest.cc
......@@ -218,11 +218,28 @@ GTEST_DEFINE_bool_(
" should display elapsed time in text output.");
GTEST_DEFINE_int32_(
random_seed,
internal::Int32FromGTestEnv("random_seed", 0),
"Random number seed to use when shuffling test orders. Must be in range "
"[1, 99999], or 0 to use a seed based on the current time.");
GTEST_DEFINE_int32_(
repeat,
internal::Int32FromGTestEnv("repeat", 1),
"How many times to repeat each test. Specify a negative number "
"for repeating forever. Useful for shaking out flaky tests.");
GTEST_DEFINE_bool_(
show_internal_stack_frames, false,
"True iff " GTEST_NAME_ " should include internal stack frames when "
"printing test failure stack traces.");
GTEST_DEFINE_bool_(
shuffle,
internal::BoolFromGTestEnv("shuffle", false),
"True iff " GTEST_NAME_
" should randomize tests' order on every run.");
GTEST_DEFINE_int32_(
stack_trace_depth,
internal::Int32FromGTestEnv("stack_trace_depth", kMaxStackTraceDepth),
......@@ -230,11 +247,6 @@ GTEST_DEFINE_int32_(
"assertion fails. The valid range is 0 through 100, inclusive.");
GTEST_DEFINE_bool_(
show_internal_stack_frames, false,
"True iff " GTEST_NAME_ " should include internal stack frames when "
"printing test failure stack traces.");
GTEST_DEFINE_bool_(
throw_on_failure,
internal::BoolFromGTestEnv("throw_on_failure", false),
"When this flag is specified, a failed assertion will throw an exception "
......@@ -774,9 +786,10 @@ String UnitTestImpl::CurrentOsStackTraceExceptTop(int skip_count) {
return String("");
}
static TimeInMillis GetTimeInMillis() {
// Returns the current time in milliseconds.
TimeInMillis GetTimeInMillis() {
#if defined(_WIN32_WCE) || defined(__BORLANDC__)
// Difference between 1970-01-01 and 1601-01-01 in miliseconds.
// Difference between 1970-01-01 and 1601-01-01 in milliseconds.
// http://analogous.blogspot.com/2005/04/epoch.html
const TimeInMillis kJavaEpochToWinFileTimeDelta =
static_cast<TimeInMillis>(116444736UL) * 100000UL;
......@@ -2719,6 +2732,12 @@ void PrettyUnitTestResultPrinter::OnUnitTestStart(const UnitTest& unit_test) {
internal::posix::GetEnv(kTestTotalShards));
}
if (GTEST_FLAG(shuffle)) {
ColoredPrintf(COLOR_YELLOW,
"Note: Randomizing tests' orders with a seed of %d .\n",
unit_test.random_seed());
}
ColoredPrintf(COLOR_GREEN, "[==========] ");
printf("Running %s from %s.\n",
FormatTestCount(unit_test.test_to_run_count()).c_str(),
......@@ -3193,6 +3212,9 @@ void XmlUnitTestResultPrinter::PrintXmlUnitTest(FILE* out,
unit_test.failed_test_count(),
unit_test.disabled_test_count(),
internal::FormatTimeInMillisAsSeconds(unit_test.elapsed_time()));
if (GTEST_FLAG(shuffle)) {
fprintf(out, "random_seed=\"%d\" ", unit_test.random_seed());
}
fprintf(out, "name=\"AllTests\">\n");
for (int i = 0; i < unit_test.total_test_case_count(); ++i)
PrintXmlTestCase(out, *unit_test.GetTestCase(i));
......@@ -3539,6 +3561,9 @@ const TestInfo* UnitTest::current_test_info() const {
return impl_->current_test_info();
}
// Returns the random seed used at the start of the current test run.
int UnitTest::random_seed() const { return impl_->random_seed(); }
#if GTEST_HAS_PARAM_TEST
// Returns ParameterizedTestCaseRegistry object used to keep track of
// value-parameterized tests and instantiate and register them.
......@@ -3604,6 +3629,7 @@ UnitTestImpl::UnitTestImpl(UnitTest* parent)
ad_hoc_test_result_(),
result_printer_(NULL),
os_stack_trace_getter_(NULL),
random_seed_(0),
#if GTEST_HAS_DEATH_TEST
elapsed_time_(0),
internal_run_death_test_flag_(NULL),
......@@ -3747,6 +3773,9 @@ int UnitTestImpl::RunAllTests() {
return 0;
}
random_seed_ = GTEST_FLAG(shuffle) ?
GetRandomSeedFromFlag(GTEST_FLAG(random_seed)) : 0;
// True iff at least one test has failed.
bool failed = false;
......@@ -3796,6 +3825,11 @@ int UnitTestImpl::RunAllTests() {
failed = true;
}
ClearResult();
if (GTEST_FLAG(shuffle)) {
// Picks a new random seed for each run.
random_seed_ = GetNextRandomSeed(random_seed_);
}
}
// Returns 0 if all tests passed, or 1 other wise.
......@@ -4262,8 +4296,15 @@ static const char kColorEncodedHelpMessage[] =
" matches any substring; ':' separates two patterns.\n"
" @G--" GTEST_FLAG_PREFIX_ "also_run_disabled_tests@D\n"
" Run all disabled tests too.\n"
"\n"
"Test Execution:\n"
" @G--" GTEST_FLAG_PREFIX_ "repeat=@Y[COUNT]@D\n"
" Run the tests repeatedly; use a negative count to repeat forever.\n"
" @G--" GTEST_FLAG_PREFIX_ "shuffle\n"
" Randomize tests' orders on every run. To be implemented.\n"
" @G--" GTEST_FLAG_PREFIX_ "random_seed=@Y[NUMBER]@D\n"
" Random number seed to use for shuffling test orders (between 1 and\n"
" 99999, or 0 to use a seed based on the current time).\n"
"\n"
"Test Output:\n"
" @G--" GTEST_FLAG_PREFIX_ "color=@Y(@Gyes@Y|@Gno@Y|@Gauto@Y)@D\n"
......@@ -4332,7 +4373,9 @@ void ParseGoogleTestFlagsOnlyImpl(int* argc, CharType** argv) {
ParseBoolFlag(arg, kListTestsFlag, &GTEST_FLAG(list_tests)) ||
ParseStringFlag(arg, kOutputFlag, &GTEST_FLAG(output)) ||
ParseBoolFlag(arg, kPrintTimeFlag, &GTEST_FLAG(print_time)) ||
ParseInt32Flag(arg, kRandomSeedFlag, &GTEST_FLAG(random_seed)) ||
ParseInt32Flag(arg, kRepeatFlag, &GTEST_FLAG(repeat)) ||
ParseBoolFlag(arg, kShuffleFlag, &GTEST_FLAG(shuffle)) ||
ParseBoolFlag(arg, kThrowOnFailureFlag, &GTEST_FLAG(throw_on_failure))
) {
// Yes. Shift the remainder of the argv list left by one. Note
......
test/gtest_help_test.py
......@@ -57,6 +57,8 @@ HELP_REGEX = re.compile(
FLAG_PREFIX + r'filter=.*' +
FLAG_PREFIX + r'also_run_disabled_tests.*' +
FLAG_PREFIX + r'repeat=.*' +
FLAG_PREFIX + r'shuffle.*' +
FLAG_PREFIX + r'random_seed=.*' +
FLAG_PREFIX + r'color=.*' +
FLAG_PREFIX + r'print_time.*' +
FLAG_PREFIX + r'output=.*' +
......
test/gtest_unittest.cc
......@@ -46,8 +46,10 @@ TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
|| testing::GTEST_FLAG(list_tests)
|| testing::GTEST_FLAG(output) != "unknown"
|| testing::GTEST_FLAG(print_time)
|| testing::GTEST_FLAG(random_seed)
|| testing::GTEST_FLAG(repeat) > 0
|| testing::GTEST_FLAG(show_internal_stack_frames)
|| testing::GTEST_FLAG(shuffle)
|| testing::GTEST_FLAG(stack_trace_depth) > 0
|| testing::GTEST_FLAG(throw_on_failure);
EXPECT_TRUE(dummy || !dummy); // Suppresses warning that dummy is unused.
......@@ -142,8 +144,10 @@ using testing::GTEST_FLAG(filter);
using testing::GTEST_FLAG(list_tests);
using testing::GTEST_FLAG(output);
using testing::GTEST_FLAG(print_time);
using testing::GTEST_FLAG(random_seed);
using testing::GTEST_FLAG(repeat);
using testing::GTEST_FLAG(show_internal_stack_frames);
using testing::GTEST_FLAG(shuffle);
using testing::GTEST_FLAG(stack_trace_depth);
using testing::GTEST_FLAG(throw_on_failure);
using testing::IsNotSubstring;
......@@ -158,6 +162,7 @@ using testing::TPRT_FATAL_FAILURE;
using testing::TPRT_NONFATAL_FAILURE;
using testing::TPRT_SUCCESS;
using testing::UnitTest;
using testing::internal::kMaxRandomSeed;
using testing::internal::kTestTypeIdInGoogleTest;
using testing::internal::AppendUserMessage;
using testing::internal::CodePointToUtf8;
......@@ -165,6 +170,8 @@ using testing::internal::EqFailure;
using testing::internal::FloatingPoint;
using testing::internal::GetCurrentOsStackTraceExceptTop;
using testing::internal::GetFailedPartCount;
using testing::internal::GetNextRandomSeed;
using testing::internal::GetRandomSeedFromFlag;
using testing::internal::GetTestTypeId;
using testing::internal::GetTypeId;
using testing::internal::GetUnitTestImpl;
......@@ -187,6 +194,43 @@ using testing::internal::WideStringToUtf8;
// This line tests that we can define tests in an unnamed namespace.
namespace {
TEST(GetRandomSeedFromFlagTest, HandlesZero) {
const int seed = GetRandomSeedFromFlag(0);
EXPECT_LE(1, seed);
EXPECT_LE(seed, static_cast<int>(kMaxRandomSeed));
}
TEST(GetRandomSeedFromFlagTest, PreservesValidSeed) {
EXPECT_EQ(1, GetRandomSeedFromFlag(1));
EXPECT_EQ(2, GetRandomSeedFromFlag(2));
EXPECT_EQ(kMaxRandomSeed - 1, GetRandomSeedFromFlag(kMaxRandomSeed - 1));
EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
GetRandomSeedFromFlag(kMaxRandomSeed));
}
TEST(GetRandomSeedFromFlagTest, NormalizesInvalidSeed) {
const int seed1 = GetRandomSeedFromFlag(-1);
EXPECT_LE(1, seed1);
EXPECT_LE(seed1, static_cast<int>(kMaxRandomSeed));
const int seed2 = GetRandomSeedFromFlag(kMaxRandomSeed + 1);
EXPECT_LE(1, seed2);
EXPECT_LE(seed2, static_cast<int>(kMaxRandomSeed));
}
TEST(GetNextRandomSeedTest, WorksForValidInput) {
EXPECT_EQ(2, GetNextRandomSeed(1));
EXPECT_EQ(3, GetNextRandomSeed(2));
EXPECT_EQ(static_cast<int>(kMaxRandomSeed),
GetNextRandomSeed(kMaxRandomSeed - 1));
EXPECT_EQ(1, GetNextRandomSeed(kMaxRandomSeed));
// We deliberately don't test GetNextRandomSeed() with invalid
// inputs, as that requires death tests, which are expensive. This
// is fine as GetNextRandomSeed() is internal and has a
// straightforward definition.
}
static void ClearCurrentTestPartResults() {
TestResultAccessor::ClearTestPartResults(
GetUnitTestImpl()->current_test_result());
......@@ -1460,7 +1504,9 @@ class GTestFlagSaverTest : public Test {
GTEST_FLAG(list_tests) = false;
GTEST_FLAG(output) = "";
GTEST_FLAG(print_time) = true;
GTEST_FLAG(random_seed) = 0;
GTEST_FLAG(repeat) = 1;
GTEST_FLAG(shuffle) = false;
GTEST_FLAG(throw_on_failure) = false;
}
......@@ -1483,7 +1529,9 @@ class GTestFlagSaverTest : public Test {
EXPECT_FALSE(GTEST_FLAG(list_tests));
EXPECT_STREQ("", GTEST_FLAG(output).c_str());
EXPECT_TRUE(GTEST_FLAG(print_time));
EXPECT_EQ(0, GTEST_FLAG(random_seed));
EXPECT_EQ(1, GTEST_FLAG(repeat));
EXPECT_FALSE(GTEST_FLAG(shuffle));
EXPECT_FALSE(GTEST_FLAG(throw_on_failure));
GTEST_FLAG(also_run_disabled_tests) = true;
......@@ -1495,7 +1543,9 @@ class GTestFlagSaverTest : public Test {
GTEST_FLAG(list_tests) = true;
GTEST_FLAG(output) = "xml:foo.xml";
GTEST_FLAG(print_time) = false;
GTEST_FLAG(random_seed) = 1;
GTEST_FLAG(repeat) = 100;
GTEST_FLAG(shuffle) = true;
GTEST_FLAG(throw_on_failure) = true;
}
private:
......@@ -4657,7 +4707,9 @@ struct Flags {
list_tests(false),
output(""),
print_time(true),
random_seed(0),
repeat(1),
shuffle(false),
throw_on_failure(false) {}
// Factory methods.
......@@ -4726,6 +4778,14 @@ struct Flags {
return flags;
}
// Creates a Flags struct where the gtest_random_seed flag has
// the given value.
static Flags RandomSeed(Int32 random_seed) {
Flags flags;
flags.random_seed = random_seed;
return flags;
}
// Creates a Flags struct where the gtest_repeat flag has the given
// value.
static Flags Repeat(Int32 repeat) {
......@@ -4734,6 +4794,14 @@ struct Flags {
return flags;
}
// Creates a Flags struct where the gtest_shuffle flag has
// the given value.
static Flags Shuffle(bool shuffle) {
Flags flags;
flags.shuffle = shuffle;
return flags;
}
// Creates a Flags struct where the gtest_throw_on_failure flag has
// the given value.
static Flags ThrowOnFailure(bool throw_on_failure) {
......@@ -4751,7 +4819,9 @@ struct Flags {
bool list_tests;
const char* output;
bool print_time;
Int32 random_seed;
Int32 repeat;
bool shuffle;
bool throw_on_failure;
};
......@@ -4768,7 +4838,9 @@ class InitGoogleTestTest : public Test {
GTEST_FLAG(list_tests) = false;
GTEST_FLAG(output) = "";
GTEST_FLAG(print_time) = true;
GTEST_FLAG(random_seed) = 0;
GTEST_FLAG(repeat) = 1;
GTEST_FLAG(shuffle) = false;
GTEST_FLAG(throw_on_failure) = false;
}
......@@ -4794,7 +4866,9 @@ class InitGoogleTestTest : public Test {
EXPECT_EQ(expected.list_tests, GTEST_FLAG(list_tests));
EXPECT_STREQ(expected.output, GTEST_FLAG(output).c_str());
EXPECT_EQ(expected.print_time, GTEST_FLAG(print_time));
EXPECT_EQ(expected.random_seed, GTEST_FLAG(random_seed));
EXPECT_EQ(expected.repeat, GTEST_FLAG(repeat));
EXPECT_EQ(expected.shuffle, GTEST_FLAG(shuffle));
EXPECT_EQ(expected.throw_on_failure, GTEST_FLAG(throw_on_failure));
}
......@@ -4901,7 +4975,7 @@ TEST_F(InitGoogleTestTest, FilterNonEmpty) {
}
// Tests parsing --gtest_break_on_failure.
TEST_F(InitGoogleTestTest, BreakOnFailureNoDef) {
TEST_F(InitGoogleTestTest, BreakOnFailureWithoutValue) {
const char* argv[] = {
"foo.exe",
"--gtest_break_on_failure",
......@@ -5117,7 +5191,7 @@ TEST_F(InitGoogleTestTest, ListTestsFalse_f) {
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::ListTests(false));
}
// Tests parsing --gtest_break_on_failure=F.
// Tests parsing --gtest_list_tests=F.
TEST_F(InitGoogleTestTest, ListTestsFalse_F) {
const char* argv[] = {
"foo.exe",
......@@ -5278,6 +5352,22 @@ TEST_F(InitGoogleTestTest, PrintTimeFalse_F) {
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::PrintTime(false));
}
// Tests parsing --gtest_random_seed=number
TEST_F(InitGoogleTestTest, RandomSeed) {
const char* argv[] = {
"foo.exe",
"--gtest_random_seed=1000",
NULL
};
const char* argv2[] = {
"foo.exe",
NULL
};
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::RandomSeed(1000));
}
// Tests parsing --gtest_repeat=number
TEST_F(InitGoogleTestTest, Repeat) {
const char* argv[] = {
......@@ -5342,9 +5432,57 @@ TEST_F(InitGoogleTestTest, AlsoRunDisabledTestsFalse) {
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::AlsoRunDisabledTests(false));
}
// Tests parsing --gtest_shuffle.
TEST_F(InitGoogleTestTest, ShuffleWithoutValue) {
const char* argv[] = {
"foo.exe",
"--gtest_shuffle",
NULL
};
const char* argv2[] = {
"foo.exe",
NULL
};
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true));
}
// Tests parsing --gtest_shuffle=0.
TEST_F(InitGoogleTestTest, ShuffleFalse_0) {
const char* argv[] = {
"foo.exe",
"--gtest_shuffle=0",
NULL
};
const char* argv2[] = {
"foo.exe",
NULL
};
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(false));
}
// Tests parsing a --gtest_shuffle flag that has a "true"
// definition.
TEST_F(InitGoogleTestTest, ShuffleTrue) {
const char* argv[] = {
"foo.exe",
"--gtest_shuffle=1",
NULL
};
const char* argv2[] = {
"foo.exe",
NULL
};
GTEST_TEST_PARSING_FLAGS_(argv, argv2, Flags::Shuffle(true));
}
// Tests parsing --gtest_throw_on_failure.
TEST_F(InitGoogleTestTest, ThrowOnFailureNoDef) {
TEST_F(InitGoogleTestTest, ThrowOnFailureWithoutValue) {
const char* argv[] = {
"foo.exe",
"--gtest_throw_on_failure",
......
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