libc/test/src/sys/wait/wait4_test.cpp

   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
  19 TEST(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 }