[libc] Add support for enum in EXPECT_EQ

[libc] Let exhaustive tests indicate each interval PASSED/FAILED.

Let exhaustive tests indicate each interval PASSED/FAILED.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.or

[libc] Let exhaustive tests indicate each interval PASSED/FAILED.

Let exhaustive tests indicate each interval PASSED/FAILED.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D121564

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[libc][NFC] Move utils/CPP to src/__support/CPP.

The idea is to move all pieces related to the actual libc sources to the
"src" directory. This allows downstream users to ship and build just the
"sr

[libc][NFC] Move utils/CPP to src/__support/CPP.

The idea is to move all pieces related to the actual libc sources to the
"src" directory. This allows downstream users to ship and build just the
"src" directory.

Reviewed By: michaelrj

Differential Revision: https://reviews.llvm.org/D112653

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[libc] Add option to run specific tests

This addition reads command line input to run specific single tests
within a larger call to run all the tests for a particular function.
When the user adds a

[libc] Add option to run specific tests

This addition reads command line input to run specific single tests
within a larger call to run all the tests for a particular function.
When the user adds a second argument to the command line, the code skips
all the tests that don't match the user's specified binary. If the user
doesn't specify a test correctly and/or no tests are run, a failure
message prints.

Reviewed By: sivachandra, aeubanks

Differential Revision: https://reviews.llvm.org/D105843

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[libc] Relocate the closing directive of #ifdef

Changed where an #endif was placed because previously it
prevented three macro definitions from being enable in Windows.

Reviewed By: sivachandra

Di

[libc] Relocate the closing directive of #ifdef

Changed where an #endif was placed because previously it
prevented three macro definitions from being enable in Windows.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D106087

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[libc] Add a macro to include/exclude subprocess tests.

This is useful when bringing up LLVM libc on a new OS on which we do not
yet have the subprocess related helper functions.

[libc] Extends the testing framework to support typed test

This patch provides `TYPED_TEST` and `TYPED_TEST_F` (similar in functionnality to gtest).
This is needed to extensively test building block

[libc] Extends the testing framework to support typed test

This patch provides `TYPED_TEST` and `TYPED_TEST_F` (similar in functionnality to gtest).
This is needed to extensively test building blocks for memory functions.

Example for `TYPED_TEST_F`:
```
template <typename T> class LlvmLibcMyTestFixture : public testing::Test {};

using Types = testing::TypeList<char, int, long>;

TYPED_TEST_F(LlvmLibcMyTestFixture, Simple, Types) {
EXPECT_LE(sizeof(ParamType), 8UL);
}
```

Example for `TYPED_TEST`:
```
using Types = testing::TypeList<char, int, long>;

TYPED_TEST(LlvmLibcMyTest, Simple, Types) {
EXPECT_LE(sizeof(ParamType), 8UL);
}
```

`ParamType` is displayed as fully qualified canonical type which can be difficult to read, the user can provide a more readable name by using the `REGISTER_TYPE_NAME` macro.

Differential Revision: https://reviews.llvm.org/D100631

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[libc][NFC] Add a death test API adaptation macro

Fuchsia's zxtest has a slightly different death test definition, and
this macro makes our death test API work on Fuchsia.

Reviewed By: sivachandra

[libc][NFC] Add a death test API adaptation macro

Fuchsia's zxtest has a slightly different death test definition, and
this macro makes our death test API work on Fuchsia.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D95648

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[libc][NFC] add "LlvmLibc" as a prefix to all test names

Summary:
Having a consistent prefix makes selecting all of the llvm libc tests
easier on any platform that is also using the gtest framework.

[libc][NFC] add "LlvmLibc" as a prefix to all test names

Summary:
Having a consistent prefix makes selecting all of the llvm libc tests
easier on any platform that is also using the gtest framework.
This also modifies the TEST and TEST_F macros to enforce this change
moving forward.

Reviewers: sivachandra

Subscribers:

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[libc][NFC] add macro for fuchsia to switch test backend to zxtest

This moves utils/UnitTest/Test.[h/cpp] to LibcTest.[h/cpp] and adds a
new Test.h that acts as a switcher so that Fuchsia can use th

[libc][NFC] add macro for fuchsia to switch test backend to zxtest

This moves utils/UnitTest/Test.[h/cpp] to LibcTest.[h/cpp] and adds a
new Test.h that acts as a switcher so that Fuchsia can use the zxtest
backend for running our tests as part of their build.

FuchsiaTest.h is for including fuchsia's zxtest library and anything
else needed to make the tests work under fuchsia (currently just
undefining the isascii macro for the test).

Downstream users, please fix your build instead of reverting.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D94625

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