1 //===-- ErrnoCheckingTest.h ------------------------------------*- C++ -*-===// 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 #ifndef LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H 10 #define LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H 11 12 #include "src/__support/macros/config.h" 13 #include "src/errno/libc_errno.h" 14 #include "test/UnitTest/Test.h" 15 16 namespace LIBC_NAMESPACE_DECL { 17 namespace testing { 18 19 // Provides a test fixture for tests that validate modifications of the errno. 20 // It clears out the errno at the beginning of the test (e.g. in case it 21 // contained the value pre-set by the system), and confirms it's still zero 22 // at the end of the test, forcing the test author to explicitly account for all 23 // non-zero values. 24 class ErrnoCheckingTest : public Test { 25 public: SetUp()26 void SetUp() override { 27 Test::SetUp(); 28 LIBC_NAMESPACE::libc_errno = 0; 29 } 30 TearDown()31 void TearDown() override { 32 ASSERT_ERRNO_SUCCESS(); 33 Test::TearDown(); 34 } 35 }; 36 37 } // namespace testing 38 } // namespace LIBC_NAMESPACE_DECL 39 40 #endif // LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H 41