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Tolerate std::string's explicit copy construction from std::string_view.

PiperOrigin-RevId: 277583394

Avoid temporary matcher instances.
They are unnecessary and can be relatively more expensive than the rest of the
algorithm.

PiperOrigin-RevId: 277084853

Remove bool_constant in favor of std::integral_constant<bool, ...>;
The one non-trivial use of bool_constant has been changed to have significantly
fewer template specializations.

PiperOrigin-RevId: 275842490

Rolling forward IsNan() matcher with fixes in test for -Wconversion issues. Use
std::nanf and std::nanl where appropriate.
PiperOrigin-RevId: 275523003

Added IsNan matcher

PiperOrigin-RevId: 275473218

Added IsNan matcher

PiperOrigin-RevId: 275278634

Makes testing::ResultOf() work with non-copyable arguments.

PiperOrigin-RevId: 271222632

This fixes up ab8f346b (a manual merge) that has abandoned some things
from PR #2395.

Merge 3bdefdb473d304803d2a38e2a2cd5cdc1827c3bd into fb49e6c1

Closes #2407

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/googletest/pull/2407 from kuzkry:StaticAssertTypeEq 3bdefdb473d304803d2a38e2a2cd5cdc1827c3bd
PiperOrigin-RevId: 269255328

Merge 7f4f58da20e1066a888d3e4bcbef541db798a605 into 90a443f9

Closes #2395

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/googletest/pull/2395 from kuzkry:custom-type-traits-remove_reference 7f4f58da20e1066a888d3e4bcbef541db798a605
PiperOrigin-RevId: 266189044

Add tuple version of Optional() matches. This allows Optional() to be used in Pointwise matchers.

PiperOrigin-RevId: 265501882

Add tuple version of Optional() matches. This allows Optional() to be used in Pointwise matchers.

PiperOrigin-RevId: 265110864

Merge b8ca465e73ac0954a0c9eec2a84bdd8913d5763b into 90a443f9

Closes #2396

COPYBARA_INTEGRATE_REVIEW=https://github.com/google/googletest/pull/2396 from kuzkry:custom-type-traits-true/false_type-and-bool_constant b8ca465e73ac0954a0c9eec2a84bdd8913d5763b
PiperOrigin-RevId: 265064856

Due to confusion arisen from "iff" standing for "if and only if",
this commit uses the latter.

Per the MSVC documentation the warning is new as of Visual Studio 2017,
version 15.8.
https://docs.microsoft.com/en-us/cpp/error-messages/compiler-warnings/c5046?view=vs-2019

GTest users building on MSVC 2015 or older versions of 2017 will, when
C4616 is enabled, see a warning like:

[...]gtest-matchers.h(53): error C2220: warning treated as error - no 'object' file generated
[...]gtest-matchers.h(53): warning C4619: #pragma warning: there is no warning number '5046'

Guard the mention of 5046 by an _MSC_VER check. VS2017 15.8 corresponds
to an _MSC_VER of 1915.
https://docs.microsoft.com/en-us/cpp/preprocessor/predefined-macros?view=vs-2019

Remove support for "global" ::string and ::wstring types.
This support existed for legacy codebases that existed from before namespaces
where a thing. It is no longer necessary.

PiperOrigin-RevId: 241335738

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

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

PiperOrigin-RevId: 229030728

Replace testing::internal::ImplicitlyConvertible with std::is_convertible
Fixes #2054

PiperOrigin-RevId: 228334305

Internal Change

PiperOrigin-RevId: 227575279

Remove the #ifs for old, unsupported and buggy compilers:
* old versions of GCC & MSVC
* Symbian

PiperOrigin-RevId: 227116941

Unifdef c++11-related macros from googletest now that it requires C++11.

PiperOrigin-RevId: 225905601

Remove GTEST_REFERENCE_TO_CONST_ usage from GMock. In C++11, it's redundant.

PiperOrigin-RevId: 225719210

Allow container matchers to accept move-only containers.

PiperOrigin-RevId: 225667441

The gmock matchers have a concept of MatchAndExpain; where the details of the
matching are written to a "result listener". A matcher can avoid creating
expensive debug info by checking result_listener->IsInterested(); but,
unfortunately, the default matcher code (called from EXPECT_THAT) is always
"interested".

This change implements EXPECT_THAT matching to first run the matcher in a "not
interested" mode; and then run it a second time ("interested") only if the
match fails.

PiperOrigin-RevId: 225036073

rollback of 224929783

PiperOrigin-RevId: 225008559

The gmock matchers have a concept of MatchAndExpain; where the details of the
matching are written to a "result listener". A matcher can avoid creating
expensive debug info by checking result_listener->IsInterested(); but,
unfortunately, the default matcher code (called from EXPECT_THAT) is always
"interested".

This change implements EXPECT_THAT matching to first run the matcher in a "not
interested" mode; and then run it a second time ("interested") only if the
match fails.

PiperOrigin-RevId: 224929783

Deduce SizeType for SizeIs() from the return value of the size() member function

PiperOrigin-RevId: 223835674

Applied fixes for ClangTidy modernize-use-override and modernize-use-using.

PiperOrigin-RevId: 223800219

Replace pump'd Args() matcher with variadic templates.

PiperOrigin-RevId: 223794430

Accept gmock matchers in EXPECT_EXIT and friends to allow matches other than simple regex matches on death output.

PiperOrigin-RevId: 223035409

Move the Matcher<T> interface to googletest so I can use it to extend death test regex matching in a subsequent change.

PiperOrigin-RevId: 221675910

Include type_traits header

ElementsAre, UnorderedElementsAre, AllOf, and AnyOf are all defined in terms of std::decay, which is in the type_traits header.

PiperOrigin-RevId: 220818637