1 //===-- Unittests for sigdelset -------------------------------------------===//
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 "include/errno.h"
10 #include "include/signal.h"
11 #include "src/signal/raise.h"
12 #include "src/signal/sigdelset.h"
13 #include "src/signal/sigfillset.h"
14 #include "src/signal/sigprocmask.h"
15 
16 #include "test/ErrnoSetterMatcher.h"
17 #include "utils/UnitTest/Test.h"
18 
19 TEST(LlvmLibcSigdelset, Invalid) {
20   using __llvm_libc::testing::ErrnoSetterMatcher::Fails;
21   // Invalid set.
22   EXPECT_THAT(__llvm_libc::sigdelset(nullptr, SIGUSR1), Fails(EINVAL));
23 
24   sigset_t set;
25   // Valid set, invalid signum.
26   EXPECT_THAT(__llvm_libc::sigdelset(&set, -1), Fails(EINVAL));
27 }
28 
29 TEST(LlvmLibcSigdelset, UnblockOne) {
30   using __llvm_libc::testing::ErrnoSetterMatcher::Succeeds;
31   sigset_t set;
32   EXPECT_THAT(__llvm_libc::sigfillset(&set), Succeeds());
33   EXPECT_THAT(__llvm_libc::sigdelset(&set, SIGUSR1), Succeeds());
34   EXPECT_THAT(__llvm_libc::sigprocmask(SIG_SETMASK, &set, nullptr), Succeeds());
35   EXPECT_DEATH([] { __llvm_libc::raise(SIGUSR1); }, WITH_SIGNAL(SIGUSR1));
36 }
37