llvm-project.git/libc/test/src/sys/random/linux/getrandom_test.cpp, branch users/nico/python-2

[libc] Migrate sys/ tests to ErrnoCheckingTest. (#141871)

2025-05-29T05:18:22+00:00

See PR #132823 for a previous change to sys/epoll tests, and prior
changes before that.

ErrnoCheckingTest ensures that errno is properly reset at the beginning
of the test case, and is validated at the end of it. This change removes
many instances of manual errno manipulation.

[libc] Fix implicit conversion warnings in tests. (#131362)

2025-03-14T18:24:11+00:00

[libc] Move libc_errno inside of LIBC_NAMESPACE (#80774)

2024-02-06T09:36:05+00:00

Having libc_errno outside of the namespace causes versioning issues when
trying to link the tests against LLVM-libc. Most of this patch is just
moving libc_errno inside the namespace in tests. This isn't necessary in
the function implementations since those are already inside the
namespace.

[libc] Mass replace enclosing namespace (#67032)

2023-09-26T09:45:04+00:00

This is step 4 of
https://discourse.llvm.org/t/rfc-customizable-namespace-to-allow-testing-the-libc-when-the-system-libc-is-also-llvms-libc/73079

[libc] Make ErrnoSetterMatcher handle logging floating point values.

2023-05-26T06:24:51+00:00

Along the way, couple of additional things have been done:

1. Move `ErrnoSetterMatcher.h` to `test/UnitTest` as all other matchers live
   there now.
2. `ErrnoSetterMatcher` ignores matching `errno` on GPUs.

Reviewed By: jhuber6

Differential Revision: https://reviews.llvm.org/D151129

[libc] simplify test for getrandom

2023-05-24T15:07:51+00:00

`getrandom` is implemented as a syscall.
We don't want to test linux implementation of the syscall. We just want to verify that it reacts as expected to sensible values.

Runtime before
```
[ RUN      ] LlvmLibcGetRandomTest.InvalidFlag
[       OK ] LlvmLibcGetRandomTest.InvalidFlag (took 0 ms)
[ RUN      ] LlvmLibcGetRandomTest.InvalidBuffer
[       OK ] LlvmLibcGetRandomTest.InvalidBuffer (took 0 ms)
[ RUN      ] LlvmLibcGetRandomTest.ReturnsSize
[       OK ] LlvmLibcGetRandomTest.ReturnsSize (took 83 ms)
[ RUN      ] LlvmLibcGetRandomTest.PiEstimation
[       OK ] LlvmLibcGetRandomTest.PiEstimation (took 9882 ms)
```

Runtime after
```
[ RUN      ] LlvmLibcGetRandomTest.InvalidFlag
[       OK ] LlvmLibcGetRandomTest.InvalidFlag (took 0 ms)
[ RUN      ] LlvmLibcGetRandomTest.InvalidBuffer
[       OK ] LlvmLibcGetRandomTest.InvalidBuffer (took 0 ms)
[ RUN      ] LlvmLibcGetRandomTest.ReturnsSize
[       OK ] LlvmLibcGetRandomTest.ReturnsSize (took 0 ms)
[ RUN      ] LlvmLibcGetRandomTest.CheckValue
[       OK ] LlvmLibcGetRandomTest.CheckValue (took 0 ms)
```

Reviewed By: lntue

Differential Revision: https://reviews.llvm.org/D151336

[LIBC] Fix `getrandom` success return value

2023-04-13T00:04:42+00:00

`getrandom` should return the number of bytes successfully set on
success, not `0`.

Reviewed By: sivachandra, michaelrj

Differential Revision: https://reviews.llvm.org/D147981

[libc][NFC] Switch sys/*.h tests over to libc_errno.

2023-03-13T23:44:52+00:00

[libc][NFC] Move UnitTest and IntegrationTest to the 'test' directory.

2023-02-07T19:45:51+00:00

This part of the effort to make all test related pieces into the `test`
directory. This helps is excluding test related pieces in a straight
forward manner if LLVM_INCLUDE_TESTS is OFF. Future patches will also move
the MPFR wrapper and testutils into the 'test' directory.

Implement `getrandom` function for linux targets.

2022-10-10T18:00:35+00:00

Reviewed By: michaelrj, sivachandra

Differential Revision: https://reviews.llvm.org/D134665