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//===-- ErrnoSetterMatcher.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_UTILS_UNITTEST_ERRNOSETTERMATCHER_H
#define LLVM_LIBC_UTILS_UNITTEST_ERRNOSETTERMATCHER_H
#include "Test.h"
// Using LLVM libc headers in UnitTest is not ideal however we also want the
// test/ directory to have the same layout as libc/ so there is no clean place
// to put this file except for in utils/UnitTest/.
#include "src/errno/llvmlibc_errno.h"
namespace __llvm_libc {
namespace testing {
namespace internal {
extern "C" const char *strerror(int);
template <typename T> class ErrnoSetterMatcher : public Matcher<T> {
T ExpectedReturn;
T ActualReturn;
int ExpectedErrno;
int ActualErrno;
public:
ErrnoSetterMatcher(T ExpectedReturn, int ExpectedErrno)
: ExpectedReturn(ExpectedReturn), ExpectedErrno(ExpectedErrno) {}
void explainError(testutils::StreamWrapper &OS) override {
if (ActualReturn != ExpectedReturn)
OS << "Expected return to be " << ExpectedReturn << " but got "
<< ActualReturn << ".\nExpecte errno to be " << strerror(ExpectedErrno)
<< " but got " << strerror(ActualErrno) << ".\n";
else
OS << "Correct value " << ExpectedReturn
<< " was returned\nBut errno was unexpectely set to "
<< strerror(ActualErrno) << ".\n";
}
bool match(T Got) {
ActualReturn = Got;
ActualErrno = llvmlibc_errno;
llvmlibc_errno = 0;
return Got == ExpectedReturn && ActualErrno == ExpectedErrno;
}
};
} // namespace internal
namespace ErrnoSetterMatcher {
template <typename RetT = int>
static internal::ErrnoSetterMatcher<RetT> Succeeds(RetT ExpectedReturn = 0,
int ExpectedErrno = 0) {
return {ExpectedReturn, ExpectedErrno};
}
template <typename RetT = int>
static internal::ErrnoSetterMatcher<RetT> Fails(int ExpectedErrno,
RetT ExpectedReturn = -1) {
return {ExpectedReturn, ExpectedErrno};
}
} // namespace ErrnoSetterMatcher
} // namespace testing
} // namespace __llvm_libc
#endif // LLVM_LIBC_UTILS_UNITTEST_ERRNOSETTERMATCHER_H
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