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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-exception6//7//===---------------------------------------------------------------------===//8 9#ifndef LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H10#define LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H11 12#include "src/__support/libc_errno.h"13#include "src/__support/macros/config.h"14#include "src/__support/macros/properties/architectures.h"15#include "test/UnitTest/Test.h"16 17// Define macro to validate the value stored in the errno and restore it18// to zero.19 20#ifdef LIBC_TARGET_ARCH_IS_GPU21#define ASSERT_ERRNO_EQ(VAL)22#define ASSERT_ERRNO_SUCCESS()23#define ASSERT_ERRNO_FAILURE()24#else25#define ASSERT_ERRNO_EQ(VAL) \26 do { \27 ASSERT_EQ(VAL, static_cast<int>(libc_errno)); \28 libc_errno = 0; \29 } while (0)30#define ASSERT_ERRNO_SUCCESS() ASSERT_EQ(0, static_cast<int>(libc_errno))31#define ASSERT_ERRNO_FAILURE() \32 do { \33 ASSERT_NE(0, static_cast<int>(libc_errno)); \34 libc_errno = 0; \35 } while (0)36#endif37 38namespace LIBC_NAMESPACE_DECL {39namespace testing {40 41// Provides a test fixture for tests that validate modifications of the errno.42// It clears out the errno at the beginning of the test (e.g. in case it43// contained the value pre-set by the system), and confirms it's still zero44// at the end of the test, forcing the test author to explicitly account for all45// non-zero values.46class ErrnoCheckingTest : public Test {47public:48 void SetUp() override {49 Test::SetUp();50 libc_errno = 0;51 }52 53 void TearDown() override {54 ASSERT_ERRNO_SUCCESS();55 Test::TearDown();56 }57};58 59} // namespace testing60} // namespace LIBC_NAMESPACE_DECL61 62#endif // LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H63