| /* |
| * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef TEST_FIELD_TRIAL_H_ |
| #define TEST_FIELD_TRIAL_H_ |
| |
| #include <map> |
| #include <string> |
| |
| namespace webrtc { |
| namespace test { |
| |
| // Parses enabled field trials from a string config, such as the one passed |
| // to chrome's argument --force-fieldtrials and initializes webrtc::field_trial |
| // with such a config. |
| // E.g.: |
| // "WebRTC-experimentFoo/Enabled/WebRTC-experimentBar/Enabled100kbps/" |
| // Assigns the process to group "Enabled" on WebRTCExperimentFoo trial |
| // and to group "Enabled100kbps" on WebRTCExperimentBar. |
| // |
| // E.g. invalid config: |
| // "WebRTC-experiment1/Enabled" (note missing / separator at the end). |
| // |
| // Note: This method crashes with an error message if an invalid config is |
| // passed to it. That can be used to find out if a binary is parsing the flags. |
| void ValidateFieldTrialsStringOrDie(const std::string& config); |
| |
| // This class is used to override field-trial configs within specific tests. |
| // After this class goes out of scope previous field trials will be restored. |
| class ScopedFieldTrials { |
| public: |
| explicit ScopedFieldTrials(const std::string& config); |
| ~ScopedFieldTrials(); |
| |
| private: |
| std::string current_field_trials_; |
| const char* previous_field_trials_; |
| }; |
| |
| } // namespace test |
| } // namespace webrtc |
| |
| #endif // TEST_FIELD_TRIAL_H_ |