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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TEST_SCOPED_ENVIRONMENT_VARIABLE_OVERRIDE_H_
#define BASE_TEST_SCOPED_ENVIRONMENT_VARIABLE_OVERRIDE_H_
#include <memory>
#include <string>
namespace base {
class Environment;
namespace test {
// Helper class to override |variable_name| environment variable to |value| for
// the lifetime of this class. Upon destruction, the previous value is restored.
class ScopedEnvironmentVariableOverride final {
public:
ScopedEnvironmentVariableOverride(const std::string& variable_name,
const std::string& value);
~ScopedEnvironmentVariableOverride();
base::Environment* GetEnv() { return environment_.get(); }
bool IsOverridden() { return overridden_; }
bool WasSet() { return was_set_; }
private:
std::unique_ptr<Environment> environment_;
std::string variable_name_;
bool overridden_;
bool was_set_;
std::string old_value_;
};
} // namespace test
} // namespace base
#endif // BASE_TEST_SCOPED_ENVIRONMENT_VARIABLE_OVERRIDE_H_