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34 lines
960 B
C++
34 lines
960 B
C++
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// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/test/scoped_environment_variable_override.h"
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#include "base/environment.h"
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namespace base {
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namespace test {
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ScopedEnvironmentVariableOverride::ScopedEnvironmentVariableOverride(
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const std::string& variable_name,
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const std::string& value)
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: environment_(Environment::Create()),
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variable_name_(variable_name),
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overridden_(false),
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was_set_(false) {
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was_set_ = environment_->GetVar(variable_name, &old_value_);
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overridden_ = environment_->SetVar(variable_name, value);
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}
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ScopedEnvironmentVariableOverride::~ScopedEnvironmentVariableOverride() {
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if (overridden_) {
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if (was_set_)
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environment_->SetVar(variable_name_, old_value_);
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else
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environment_->UnSetVar(variable_name_);
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}
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}
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} // namespace test
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} // namespace base
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