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Avoid segfault on null premature_exit_filepath.

PiperOrigin-RevId: 395965853

Delete GOOGLETEST_CM.* tags from C++ code.

PiperOrigin-RevId: 386268534

Introduce GTEST_FLAG_GET and GTEST_FLAG_SET macros.

PiperOrigin-RevId: 382808313

gtest: Add a flag to only set up/tear down test environments once when repeating

Currently when running a test multiple times using `--gtest_repeat` the global
test environment(s) are set up and torn down for each iteration of the test.
When checking for flakes in tests that have expensive dependencies that are set
up in the test environment (subprocesses, external dependencies, etc) this can
become expensive.

To support finding flakes in tests that fit into this category, where the setup
phase is expensive but each test case is fast, allow callers to specify via
`--gtest_recreate_environments_when_repeating=false` that the test environments
should only be set up once, for the first iteration, and only torn down once, on
the last iteration. This makes running a test with `--gtest_repeat=1000` a much
faster and more pleasant experience.

PiperOrigin-RevId: 382748942

Use the time_point from steady_clock instead of the template
This fixes the build on some embedded compilers

PiperOrigin-RevId: 368879480

Add support to run gtest on Xtensa platform.

This add support to run GTest base test suits on Xtensa
(https://ip.cadence.com/ipportfolio/tensilica-ip) base simulator.
Xtensa only provides libc and some basic operations and does not run an
operating system by default.

PiperOrigin-RevId: 368162205

gtest: Output a canned test suite for environment failures in XML/JSON

This surfaces useful information about the environment failure in a structured form.

As we can see from the updated test, previously unsurfaced information is now present.

PiperOrigin-RevId: 362292322

Use monotonic time to measure test duration

System time may be updated while a test is running. When this occurs a
duration measured using system time may appear to move backwards, or
jump far forwards.
This change updates the duration measurement to use monotonic time
instead. Timestamps for the test start still use system time.

PiperOrigin-RevId: 361700881

gtest.cc: Split out functions for printing `TestResult` objects

This will make it possible to reuse this code for outputting the "ad_hoc" `TestResult` objects in structured form in XML/JSON.

PiperOrigin-RevId: 361604860

Explicitly skip tests after fatal global environment setup errors

Previously the tests were all skipped, but the resulting output claimed all
tests passed.

Before:
```
[----------] Global test environment set-up.
<failure message>
[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (83 ms total)
[  PASSED  ] 1 test.
[  FAILED  ] 0 tests, listed below:
```

After:
```
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
<failure message>
[----------] 1 test from SomeTest
[ RUN      ] SomeTest.DoesFoo
<...>: Skipped
[  SKIPPED ] SomeTest.DoesFoo (0 ms)
[----------] 1 test from SomeTest (0 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (68 ms total)
[  PASSED  ] 0 tests.
[  SKIPPED ] 1 test, listed below:
[  SKIPPED ] SomeTest.DoesFoo
[  FAILED  ] 0 tests, listed below:
```

PiperOrigin-RevId: 358026389

Use linear-time string globbing in UnitTestOptions::MatchesFilter.

Algorithm is based on https://research.swtch.com/glob.

Closes #3227

PiperOrigin-RevId: 355222440

This fixes build issues with GoogleTest when built with
-Wformat-nonliteral and unblocks updating GoogleTest in BoringSSL.

It was added in 53c478d6, which caught
some bugs. Then it was moved to the header and accidentally dropped in
482ac6ee.

Affects macros {ASSERT|EXPECT}_{EQ|NE|LE|LT|GE|GT}.

According to removed comments, these overloads were supposed to reduce
code bloat and allow anonymous enums on GCC 4.

However, the way it works on GCC 4 and the latest GCC (10.2 by now) is
that having:

template <typename T1, typename T2>
void foo(T1, T2);

using BiggestInt = long long;
void foo(BiggestInt, BiggestInt);

the template version takes precedence for almost every combination of
integral types except for two long long integers - i.e. implicit
promotion to long long is a worse match than generating a specific
template function.

Tested on GCC 4.8.1 (as GoogleTest requires C++11 and this was
the first C++11 feature-complete release of GCC),
GCC 4.8.5 (last of 4.8.x series) and the latest GCC (10.2.0).

Signed-off-by: Vinson Lee <vlee@freedesktop.org>

Use environment variable TEST_TMPDIR in Linux environments
for temporary directory if available otherwise use /tmp/.

Bazel sets the environment variable TEST_TMPDIR when launching tests.

PiperOrigin-RevId: 342058921

Remove unreachable code when GTEST_CUSTOM_TEMPDIR_FUNCTION_ is defined.

PiperOrigin-RevId: 341810264

Replace "definedin in" by "defined in" in files:
- googletest/src/gtest.cc
- googletest/test/googletest-output-test-golden-lin.txt

Revision of recent DoubleNearPredFormat change to support more toolchains.

isnan() is a macro in C99, and std::isnan() is a function in C++11.  The previous change used `isnan` directly, and broke some tests in open source.

This CL changes it to follow the practice in gmock-matchers.h, and spell uses of isnan as
  (std::isnan)(f)
.  The parens around `std::isnan` prevent it from being recognized as a macro in the preprocessor.

PiperOrigin-RevId: 333374377

Improve DoubleNearPredFormat output on bad epsilons

DoubleNearPredFormat will happily accept epsilon values (abs_error) that
are so small that they are meaningless. This turns EXPECT_NEAR into a
complicated and non-obvious version of EXPECT_EQ.

This change modifies DoubleNearPredFormat) so that when there is a
failure it calculates the smallest meaningful epsilon value, given the
input values, and then prints a message which explains what happened.

If a true equality test is wanted either pass a literal 0.0 as abs_error
or use EXPECT_EQ. If a check for being almost equal is wanted consider
using EXPECT_DOUBLE_EQ which, contrary to its name, verifies that the
two numbers are *almost* equal (within four ULPs).

With this change the flaky test mentioned in crbug.com/786046 gives this
output:

The difference between 4.2934311416234112e+18 and 4.2934311416234107e+18 is 512, where
4.2934311416234112e+18 evaluates to 4.2934311416234112e+18,
4.2934311416234107e+18 evaluates to 4.2934311416234107e+18.
The abs_error parameter 1.0 evaluates to 1 which is smaller than the minimum distance between doubles for numbers of this magnitude which is 512, thus making this EXPECT_NEAR check equivalent to EXPECT_EQUAL. Consider using EXPECT_DOUBLE_EQ instead.

Tested:
I confirmed that this change detects the bad epsilon value that caused
crbug.com/786046 in Chromium and added a test for the desired output.
PiperOrigin-RevId: 332946880

Implements GetTimeInMillis() using std::chrono for portability
Fixes #2995

PiperOrigin-RevId: 329709958

gtest.cc: make ColoredPrintf static

the prototype was removed from gtest.h in cl/301446904; quiets a
-Wmissing-declarations warning

PiperOrigin-RevId: 329569020

Add millisecond precision to start timestamp in XML/JSON output

- Previous timestamp had format YYYY-MM-DDThh:mm:ss, now YYYY-MM-DDThh:mm:ss.sss
- This conforms to the ISO 8601 standard

PiperOrigin-RevId: 329503623

gtest.cc: fix a couple typos

s/paramaterized/parameterized/

PiperOrigin-RevId: 316878900

Fail TEST_Ps or TYPED_TEST_Ps that are defined but are not instantiated, as well as the opposite case, where INSTANTIATE_TEST_SUITE_P or INSTANTIATE_TYPED_TEST_SUITE_P is used but without any matching TEST_P or TYPED_TEST_P.

PiperOrigin-RevId: 315255779

The documentation for IsDebuggerPresent says that one just should
include windows.h, as that one is an umbrella header that includes
the header that declares IsDebuggerPresent. In older Windows SDKs,
debugapi.h didn't exist and IsDebuggerPresent was declared in
winbase.h (also included by windows.h).

This should fix issue #2822 properly.

This reverts commit a9f6c1ed.

That commit cannot fix the issue it sets out to fix.

The original issue, #2822, was that building with a toolset
targeting XP compatibility is missing the debugapi.h header -
as debugapi.h didn't exist in older Windows SDKs.

Commit a9f6c1ed misinterpreted
the Microsoft documentation about IsDebuggerPresent. The information
about which header to use, "debugapi.h (include Windows.h)" means
that the function declaration currently lives in debugapi.h, but
for compatibility, just include the Windows.h umbrella header.
In older Windows SDKs (e.g. the v6.0a SDK), IsDebuggerPresent
is declared in winbase.h, and debugapi.h doesn't exist at all in those
versions.

Including Windows.h with a different capitalization than the existing
include won't help finding headers that don't exist.

Including Windows.h with a capital W breaks cross compilation with mingw
toolchains, where the header always has been spelled with a lower case
W. When building on native windows, the file system is case insensitive
and the capitalization doesn't matter.

This fixes issue #2840.

Addresses Github issue (https://github.com/google/googletest/issues/2822) by following the Microsoft documention (https://docs.microsoft.com/en-us/windows/win32/api/debugapi/nf-debugapi-isdebuggerpresent) to include capital-W Windows.h before including debugapi.h.

See "Header	debugapi.h (include Windows.h)"

PiperOrigin-RevId: 309745868

Add --gtest_fail_fast support to googletest.

  - Analogous functionality to to golang -test.failfast and python --failfast
  - Stops test execution upon first test failure.
  - Also add support Bazel equivalent env var (TESTBRIDGE_TEST_RUNNER_FAIL_FAST)

PiperOrigin-RevId: 302488880

Only prints failures and a total pass count