0fd0b74289
This is a follow up to https://reviews.llvm.org/D152503 Reviewed By: sivachandra Differential Revision: https://reviews.llvm.org/D152533
99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
//===-- ErrnoSetterMatcher.h ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_TEST_ERRNOSETTERMATCHER_H
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#define LLVM_LIBC_TEST_ERRNOSETTERMATCHER_H
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#include "src/__support/FPUtil/FPBits.h"
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#include "src/__support/FPUtil/fpbits_str.h"
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#include "src/__support/StringUtil/error_to_string.h"
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#include "src/__support/macros/properties/architectures.h"
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#include "src/errno/libc_errno.h"
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#include "test/UnitTest/Test.h"
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namespace __llvm_libc {
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namespace testing {
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namespace internal {
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template <typename T> class ErrnoSetterMatcher : public Matcher<T> {
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T ExpectedReturn;
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T ActualReturn;
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int ExpectedErrno;
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int ActualErrno;
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// Even though this is a errno matcher primarily, it has to cater to platforms
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// which do not have an errno. This predicate checks if errno matching is to
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// be skipped.
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static constexpr bool ignore_errno() {
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#ifdef LIBC_TARGET_ARCH_IS_GPU
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return true;
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#else
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return false;
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#endif
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}
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public:
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ErrnoSetterMatcher(T ExpectedReturn, int ExpectedErrno)
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: ExpectedReturn(ExpectedReturn), ExpectedErrno(ExpectedErrno) {}
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void explainError() override {
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if (ActualReturn != ExpectedReturn) {
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if constexpr (cpp::is_floating_point_v<T>) {
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tlog << "Expected return value to be: "
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<< str(fputil::FPBits<T>(ExpectedReturn)) << '\n';
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tlog << " But got: "
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<< str(fputil::FPBits<T>(ActualReturn)) << '\n';
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} else {
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tlog << "Expected return value to be " << ExpectedReturn << " but got "
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<< ActualReturn << ".\n";
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}
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}
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if constexpr (!ignore_errno()) {
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if (ActualErrno != ExpectedErrno) {
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tlog << "Expected errno to be \"" << get_error_string(ExpectedErrno)
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<< "\" but got \"" << get_error_string(ActualErrno) << "\".\n";
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}
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}
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}
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bool match(T Got) {
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ActualReturn = Got;
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ActualErrno = libc_errno;
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libc_errno = 0;
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if constexpr (ignore_errno())
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return Got == ExpectedReturn;
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else
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return Got == ExpectedReturn && ActualErrno == ExpectedErrno;
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}
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};
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} // namespace internal
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namespace ErrnoSetterMatcher {
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template <typename RetT = int>
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static internal::ErrnoSetterMatcher<RetT> Succeeds(RetT ExpectedReturn = 0,
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int ExpectedErrno = 0) {
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return {ExpectedReturn, ExpectedErrno};
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}
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template <typename RetT = int>
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static internal::ErrnoSetterMatcher<RetT> Fails(int ExpectedErrno,
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RetT ExpectedReturn = -1) {
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return {ExpectedReturn, ExpectedErrno};
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}
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} // namespace ErrnoSetterMatcher
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} // namespace testing
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} // namespace __llvm_libc
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#endif // LLVM_LIBC_TEST_ERRNOSETTERMATCHER_H
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