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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_TEST_ERRNOSETTERMATCHER_H
#define LLVM_LIBC_TEST_ERRNOSETTERMATCHER_H
#include "src/__support/FPUtil/FPBits.h"
#include "src/__support/FPUtil/fpbits_str.h"
#include "src/__support/StringUtil/error_to_string.h"
#include "src/__support/macros/properties/architectures.h"
#include "src/errno/libc_errno.h"
#include "test/UnitTest/Test.h"
namespace __llvm_libc {
namespace testing {
namespace internal {
template <typename T> class ErrnoSetterMatcher : public Matcher<T> {
T ExpectedReturn;
T ActualReturn;
int ExpectedErrno;
int ActualErrno;
// Even though this is a errno matcher primarily, it has to cater to platforms
// which do not have an errno. This predicate checks if errno matching is to
// be skipped.
static constexpr bool ignore_errno() {
#ifdef LIBC_TARGET_ARCH_IS_GPU
return true;
#else
return false;
#endif
}
public:
ErrnoSetterMatcher(T ExpectedReturn, int ExpectedErrno)
: ExpectedReturn(ExpectedReturn), ExpectedErrno(ExpectedErrno) {}
void explainError() override {
if (ActualReturn != ExpectedReturn) {
if constexpr (cpp::is_floating_point_v<T>) {
tlog << "Expected return value to be: "
<< str(fputil::FPBits<T>(ExpectedReturn)) << '\n';
tlog << " But got: "
<< str(fputil::FPBits<T>(ActualReturn)) << '\n';
} else {
tlog << "Expected return value to be " << ExpectedReturn << " but got "
<< ActualReturn << ".\n";
}
}
if constexpr (!ignore_errno()) {
if (ActualErrno != ExpectedErrno) {
tlog << "Expected errno to be \"" << get_error_string(ExpectedErrno)
<< "\" but got \"" << get_error_string(ActualErrno) << "\".\n";
}
}
}
bool match(T Got) {
ActualReturn = Got;
ActualErrno = libc_errno;
libc_errno = 0;
if constexpr (ignore_errno())
return Got == ExpectedReturn;
else
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_TEST_ERRNOSETTERMATCHER_H
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