99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "test/util/posix_error.h"
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#include <cassert>
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#include <cerrno>
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#include <cstring>
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#include <string>
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#include "absl/strings/str_cat.h"
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namespace gvisor {
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namespace testing {
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std::string PosixError::ToString() const {
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if (ok()) {
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return "No Error";
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}
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std::string ret;
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char strerrno_buf[1024] = {};
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auto res = strerror_r(errno_, strerrno_buf, sizeof(strerrno_buf));
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// The GNU version of strerror_r always returns a non-null char* pointing to a
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// buffer containing the stringified errno; the XSI version returns a positive
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// errno which indicates the result of writing the stringified errno into the
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// supplied buffer. The gymnastics below are needed to support both.
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#ifndef _GNU_SOURCE
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if (res != 0) {
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ret = absl::StrCat("PosixError(errno=", errno_, " strerror_r FAILED(", ret,
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"))");
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} else {
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ret = absl::StrCat("PosixError(errno=", errno_, " ", strerrno_buf, ")");
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}
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#else
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ret = absl::StrCat("PosixError(errno=", errno_, " ", res, ")");
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#endif
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if (!msg_.empty()) {
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ret.append(" ");
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ret.append(msg_);
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}
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return ret;
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}
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::std::ostream& operator<<(::std::ostream& os, const PosixError& e) {
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os << e.ToString();
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return os;
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}
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void PosixErrorIsMatcherCommonImpl::DescribeTo(std::ostream* os) const {
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*os << "has an errno value that ";
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code_matcher_.DescribeTo(os);
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*os << ", and has an error message that ";
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message_matcher_.DescribeTo(os);
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}
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void PosixErrorIsMatcherCommonImpl::DescribeNegationTo(std::ostream* os) const {
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*os << "has an errno value that ";
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code_matcher_.DescribeNegationTo(os);
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*os << ", or has an error message that ";
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message_matcher_.DescribeNegationTo(os);
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}
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bool PosixErrorIsMatcherCommonImpl::MatchAndExplain(
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const PosixError& error,
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::testing::MatchResultListener* result_listener) const {
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::testing::StringMatchResultListener inner_listener;
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inner_listener.Clear();
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if (!code_matcher_.MatchAndExplain(error.errno_value(), &inner_listener)) {
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return false;
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}
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if (!message_matcher_.Matches(error.error_message())) {
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return false;
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}
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return true;
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}
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} // namespace testing
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} // namespace gvisor
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