libc/test/src/signal/signal_test.cpp

   1 //===-- Unittests for signal ----------------------------------------------===//
   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/errno/libc_errno.h"
  10 #include "src/signal/raise.h"
  11 #include "src/signal/signal.h"
  12
  13 #include "test/UnitTest/ErrnoSetterMatcher.h"
  14 #include "test/UnitTest/Test.h"
  15
  16 #include "hdr/types/sighandler_t.h"
  17
  18 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Fails;
  19 using LIBC_NAMESPACE::testing::ErrnoSetterMatcher::Succeeds;
  20
  21 TEST(LlvmLibcSignal, Invalid) {
  22   LIBC_NAMESPACE::libc_errno = 0;
  23   sighandler_t valid = +[](int) {};
  24   EXPECT_THAT((void *)LIBC_NAMESPACE::signal(0, valid),
  25               Fails(EINVAL, (void *)SIG_ERR));
  26   EXPECT_THAT((void *)LIBC_NAMESPACE::signal(65, valid),
  27               Fails(EINVAL, (void *)SIG_ERR));
  28 }
  29
  30 static int sum;
  31 TEST(LlvmLibcSignal, Basic) {
  32   // In case test get run multiple times.
  33   sum = 0;
  34   ASSERT_NE(LIBC_NAMESPACE::signal(
  35                 SIGUSR1, +[](int) { sum++; }),
  36             SIG_ERR);
  37   ASSERT_THAT(LIBC_NAMESPACE::raise(SIGUSR1), Succeeds());
  38   EXPECT_EQ(sum, 1);
  39   for (int i = 0; i < 10; i++)
  40     ASSERT_THAT(LIBC_NAMESPACE::raise(SIGUSR1), Succeeds());
  41   EXPECT_EQ(sum, 11);
  42 }