1 // Copyright 2016 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef BASE_TEST_SCOPED_FEATURE_LIST_H_ 6 #define BASE_TEST_SCOPED_FEATURE_LIST_H_ 7 8 #include <initializer_list> 9 10 #include "base/feature_list.h" 11 12 namespace base { 13 namespace test { 14 15 // ScopedFeatureList resets the global FeatureList instance to a new empty 16 // instance and restores the original instance upon destruction. 17 // Note: Re-using the same object is not allowed. To reset the feature 18 // list and initialize it anew, destroy an existing scoped list and init 19 // a new one. 20 class ScopedFeatureList final { 21 public: 22 ScopedFeatureList(); 23 ~ScopedFeatureList(); 24 25 // Initializes and registers a FeatureList instance with no overrides. 26 void Init(); 27 28 // Initializes and registers the given FeatureList instance. 29 void InitWithFeatureList(std::unique_ptr<FeatureList> feature_list); 30 31 // Initializes and registers a FeatureList instance with the given enabled 32 // and disabled features. 33 void InitWithFeatures( 34 const std::initializer_list<base::Feature>& enabled_features, 35 const std::initializer_list<base::Feature>& disabled_features); 36 37 // Initializes and registers a FeatureList instance with the given 38 // enabled and disabled features (comma-separated names). 39 void InitFromCommandLine(const std::string& enable_features, 40 const std::string& disable_features); 41 42 // Initializes and registers a FeatureList instance enabling a single 43 // feature. 44 void InitAndEnableFeature(const base::Feature& feature); 45 46 // Initializes and registers a FeatureList instance disabling a single 47 // feature. 48 void InitAndDisableFeature(const base::Feature& feature); 49 50 private: 51 std::unique_ptr<FeatureList> original_feature_list_; 52 53 DISALLOW_COPY_AND_ASSIGN(ScopedFeatureList); 54 }; 55 56 } // namespace test 57 } // namespace base 58 59 #endif // BASE_TEST_SCOPED_FEATURE_LIST_H_ 60
