1//===-- Unittests for wait4 -----------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "src/sys/wait/wait4.h"
10#include "test/UnitTest/ErrnoSetterMatcher.h"
11#include "test/UnitTest/Test.h"
12
13#include <errno.h>
14#include <sys/wait.h>
15
16// The test here is a simpl test for WNOHANG functionality. For a more
17// involved test, look at fork_test.
18
19TEST(LlvmLibcwait4Test, NoHangTest) {
20 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
21 int status;
22 ASSERT_THAT(LIBC_NAMESPACE::wait4(-1, &status, WNOHANG, nullptr),
23 Fails(ECHILD));
24}
25

source code of libc/test/src/sys/wait/wait4_test.cpp