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//===-- ErrnoCheckingTest.h ------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===---------------------------------------------------------------------===//
#ifndef LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H
#define LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include "test/UnitTest/Test.h"
// Define macro to validate the value stored in the errno and restore it
// to zero.
#define ASSERT_ERRNO_EQ(VAL) \
do { \
ASSERT_EQ(VAL, static_cast<int>(libc_errno)); \
libc_errno = 0; \
} while (0)
#define ASSERT_ERRNO_SUCCESS() ASSERT_EQ(0, static_cast<int>(libc_errno))
#define ASSERT_ERRNO_FAILURE() \
do { \
ASSERT_NE(0, static_cast<int>(libc_errno)); \
libc_errno = 0; \
} while (0)
namespace LIBC_NAMESPACE_DECL {
namespace testing {
// Provides a test fixture for tests that validate modifications of the errno.
// It clears out the errno at the beginning of the test (e.g. in case it
// contained the value pre-set by the system), and confirms it's still zero
// at the end of the test, forcing the test author to explicitly account for all
// non-zero values.
class ErrnoCheckingTest : public Test {
public:
void SetUp() override {
Test::SetUp();
libc_errno = 0;
}
void TearDown() override {
ASSERT_ERRNO_SUCCESS();
Test::TearDown();
}
};
} // namespace testing
} // namespace LIBC_NAMESPACE_DECL
#endif // LLVM_LIBC_TEST_UNITTEST_ERRNOCHECKINGTEST_H
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