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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

Remove linked_ptr and use std::shared_ptr instead

PiperOrigin-RevId: 219129336

Remove linked_ptr and use std::shared_ptr instead

PiperOrigin-RevId: 218618184

Remove linked_ptr and use std::shared_ptr instead

PiperOrigin-RevId: 218571466

C++11 code cleanup.

PiperOrigin-RevId: 217364243

PiperOrigin-RevId: 216411381

Remove all mention of TR1 tuple and our own implementation of tuple.

PiperOrigin-RevId: 216395043

PiperOrigin-RevId: 216389313

PiperOrigin-RevId: 216183352

Now that googletest has moved to C++11, it should no longer
use NULL or 0 for the null pointer. This patch converts all
such usages to nullptr using clang-tidy.

This prevents LLVM from issuing -Wzero-as-null-pointer-constant
warnings.

PiperOrigin-RevId: 215814400

Remove non-variadic pre C++11 ElementsAreMatcher and UnorderedElementsAreMatcher

PiperOrigin-RevId: 214266944

Treat default-constructed string_view same as constructed from "".
In the context of string comparison (e.g. HasSubstr, StartsWith, EndsWith,
etc.), a default-constructed string_view (nullptr) should be semantically same
as a empty string "".

PiperOrigin-RevId: 212816839

Fix broken OSS windows build.

PiperOrigin-RevId: 210969049

Internal Change

PiperOrigin-RevId: 210594341

This makes ResultOf more convenient to use. In particular, the matcher now accepts
lambdas.

PiperOrigin-RevId: 210118509

  - 209457654 Import of OSS PR, https://github.com/google/googletest/pu... by misterg <misterg@google.com>

PiperOrigin-RevId: 209457654

Comments changes, no functionality changes. 

Comments changes, no functionality changes

Formatting changes for automatic code management

code merge

code sync

Fixes issue #1554. This is internal cl/195020996.

merging, 

http://cl/193060888

test-meerging

Upstream cl/192179348

merging gmock matchers 1