Fix matcher comparisons for std::reference_wrapper.

The googletest docs indicate that std::reference_wrapper should be used to for
objects that should not be copied by the matcher (in fact, the ByRef() function
is basically the same as a call to std::cref).

However, for many types (such as std::string), the overloaded operator== will
not resolve correctly. Specifically, this is problematic if operator== depends
on template argument deduction, where the same type is named on LHS and RHS.

Because template argument deduction happens before any implict conversions for
purposes of overload resolution, attempting to compare T with
std::reference_wrapper<T> simply looks like a comparison of unlike types.

For exapmle, std::reference_wrapper<std::string> is implicitly convertible to
'const std::string&', which would be able to choose an overload specialization
of operator==. However, the implicit conversion can only happen after template
argument deduction for operator==, so a specialization that would other be an
applicable overload is never considered.

Note also that this change only affects matchers. There are good reasons that
matchers may need to transparently hold a std::reference_wrapper. Other
comparisons (like EXPECT_EQ, et. al.) don't need to capture a reference: they
don't need to defer evaluation (as in googlemock), and they don't need to avoid
copies (as the call chain of matchers does).

PiperOrigin-RevId: 232499175

Internal change

PiperOrigin-RevId: 232362580

Test out changes with clang/OSX each PR using Travis CI

Fix an invalid example of JSON report in advanced.md

This is just a mistake in the document. Google Test doesn't output
such an invalid JSON report.
Signed-off-by: Keiichi Watanabe <keiichiw@chromium.org>

This will help ensure that test coverage isn't missed when changes that
can impact OSX with clang are submitted. Although not perfect, testing
changes on OSX with clang is an ok proxy [for now] for testing changes on
FreeBSD with clang (testing on FreeBSD is non-trivial, as Travis CI doesn't
support operating systems other than Linux and OSX).

In order to support this, install the packages via homebrew using a
`addons::homebrew::packages` block (similar to `addons::apt::packages`
for Ubuntu), as documented in the Travis CI docs
( https://docs.travis-ci.com/user/installing-dependencies/ ). While
here, try pushing apt* calls into the Travis config for Ubuntu, instead
of delaying the equivalent calls in the `ci/*.sh` scripts. Keep the
`ci/*.sh` scripts for ease of testing locally (and extend the OSX one to
install gcc 4.9 and llvm 3.9, like the travis config does).

In order to accomodate this change (and because the homebrew package for
llvm@3.9 doesn't automatically add clang*-3.9 to `$PATH`), `$PATH` needs
to be adjusted to find the llvm@3.9 toolchain.
Signed-off-by: Enji Cooper <yaneurabeya@gmail.com>

Address -Wgnu-zero-variadic-macro-arguments
Originally in OSS PR #2063 https://github.com/google/googletest/pull/2063
Fix regression in INSTANTIATE_TEST_SUITE_P macro to accept function pointers properly.

PiperOrigin-RevId: 232316698

Mark legacy _TEST_CASE_ macros as deprecated

PiperOrigin-RevId: 232303251

Update example code in gtest.h to prefer override over virtual now
that it is widely available in C++11.

PiperOrigin-RevId: 232057792

PiperOrigin-RevId: 232028696

Fix stack overflow in AnyOfArray tests.

PiperOrigin-RevId: 231881125

Added Arduino to the embedded platform list to allow for a stubbed out version
of GetCurrentDir.

Added [gmock|gtest]_all.cc to PIO ignore list to avoid getting duplicate
symbols since PIO will compile the individual files.

Fix README.md broken link

Fix the **include/gtest/internal/gtest-port.h** link in the `Tweaking Google Test` title

Repeat #2090

Testing

PiperOrigin-RevId: 231456275

Update advanced.md casing in example

Updated the example that says not to use SetupTestSuite with a small 'u' to actually use a small 'u'

This is inspired by work in http://go/gh/google/googletest/pull/2063 but in a separate commit

PiperOrigin-RevId: 231434457

PiperOrigin-RevId: 231286700

Avoid dynamic/static runtime linking (LNK4098) by properly replacing MD(d)->MT(d) in both C and CXX flags, resolves 2074

PiperOrigin-RevId: 230902623

I made a few updates to the Makefile.am files so that "make dist"
succeeds and produces a usable tarball. We need this for protobuf
because the protobuf tarballs include a bundled copy of googletest.

PiperOrigin-RevId: 230554814

Add AllOfArray matcher that verifies a value matches all member of some array/container/list/set/..., e.g:
EXPECT_THAT(1, AnyOfArray({1, 2, 3}))
In the simplest form this is identical to AnyOf(1, 2, 3). But unlike that one it works on containers.

Add AnyOfArray matcher that verifies a value matches any member of some
array/container/list/set/...

PiperOrigin-RevId: 230403653

Make internal FunctionMocker class final

PiperOrigin-RevId: 230332778

Fix mocking method arguments with templated copy constructors.

A previous change removed workarounds for old compilers from googletest and googlemock. Unfortunately, a bit of code that started as a workaround for Symbian's C++ compiler is still needed to avoid copy/move constructor ambiguity when mocking functions with certain argument types.

The test case added by this CL is extracted from Chrome's codebase, and was discovered while attempting to roll googletest.

PiperOrigin-RevId: 229801765

Refactor the `Invoke` and `InvokeWithoutArgs` actions:
 - Replace pump'd classes and functions with templates.
 - Make the polymorphic actions be polymorphic functors instead.
 - Fix Invoke(Callback*) to work with subclasses of the callbacks, instead of trying to diagnose that in gmock_doctor.

PiperOrigin-RevId: 229604112

Change remaining samples to use new Test Suite API

PiperOrigin-RevId: 229231566

Add move-only argument support to almost all remaining matchers.

PiperOrigin-RevId: 229030728

Deduplicate testing::ReferenceWrapper with std::reference_wrapper.
Minor cleanups in matchers_test.

PiperOrigin-RevId: 229022872

Change tests to use new Test Suite API

PiperOrigin-RevId: 228908894