libc/test/src/signal/sigaddset_test.cpp

   1 //===-- Unittests for sigaddset -------------------------------------------===//
   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/signal/sigaddset.h"
  10
  11 #include "test/UnitTest/ErrnoSetterMatcher.h"
  12 #include "test/UnitTest/Test.h"
  13
  14 #include <signal.h>
  15
  16 // This tests invalid inputs and ensures errno is properly set.
  17 TEST(LlvmLibcSignalTest, SigaddsetInvalid) {
  18   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  19   using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
  20   EXPECT_THAT(LIBC_NAMESPACE::sigaddset(nullptr, SIGSEGV), Fails(EINVAL));
  21
  22   sigset_t sigset;
  23   EXPECT_THAT(LIBC_NAMESPACE::sigaddset(&sigset, -1), Fails(EINVAL));
  24
  25   // This doesn't use NSIG because LIBC_NAMESPACE::sigaddset error checking is
  26   // against sizeof(sigset_t) not NSIG.
  27   constexpr int bitsInSigsetT = 8 * sizeof(sigset_t);
  28
  29   EXPECT_THAT(LIBC_NAMESPACE::sigaddset(&sigset, bitsInSigsetT + 1),
  30               Fails(EINVAL));
  31   EXPECT_THAT(LIBC_NAMESPACE::sigaddset(&sigset, 0), Fails(EINVAL));
  32   EXPECT_THAT(LIBC_NAMESPACE::sigaddset(&sigset, bitsInSigsetT), Succeeds());
  33 }