chromium/third_party/abseil-cpp/absl/log/internal/test_actions.h

// Copyright 2022 The Abseil Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// -----------------------------------------------------------------------------
// File: log/internal/test_actions.h
// -----------------------------------------------------------------------------
//
// This file declares Googletest's actions used in the Abseil Logging library
// unit tests.

#ifndef ABSL_LOG_INTERNAL_TEST_ACTIONS_H_
#define ABSL_LOG_INTERNAL_TEST_ACTIONS_H_

#include <iostream>
#include <ostream>
#include <string>

#include "absl/base/config.h"
#include "absl/base/log_severity.h"
#include "absl/log/log_entry.h"
#include "absl/strings/string_view.h"

namespace absl {
ABSL_NAMESPACE_BEGIN
namespace log_internal {

// These actions are used by the child process in a death test.
//
// Expectations set in the child cannot cause test failure in the parent
// directly.  Instead, the child can use these actions with
// `EXPECT_CALL`/`WillOnce` and `ON_CALL`/`WillByDefault` (for unexpected calls)
// to write messages to stderr that the parent can match against.
struct WriteToStderr final { … };

struct WriteToStderrWithFilename final { … };

struct WriteEntryToStderr final { … };

// See the documentation for `DeathTestValidateExpectations` above.
// `DeathTestExpectedLogging` should be used once in a given death test, and the
// applicable severity level is the one that should be passed to
// `DeathTestValidateExpectations`.
inline WriteEntryToStderr DeathTestExpectedLogging() { … }

// `DeathTestUnexpectedLogging` should be used zero or more times to mark
// messages that should not hit the logs as the process dies.
inline WriteEntryToStderr DeathTestUnexpectedLogging() { … }

}  // namespace log_internal
ABSL_NAMESPACE_END
}  // namespace absl

#endif  // ABSL_LOG_INTERNAL_TEST_ACTIONS_H_