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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_TEST_SCOPED_FEATURE_LIST_H_ | 5 #ifndef BASE_TEST_SCOPED_FEATURE_LIST_H_ |
6 #define BASE_TEST_SCOPED_FEATURE_LIST_H_ | 6 #define BASE_TEST_SCOPED_FEATURE_LIST_H_ |
7 | 7 |
8 #include <initializer_list> | 8 #include <initializer_list> |
9 | 9 |
10 #include "base/feature_list.h" | 10 #include "base/feature_list.h" |
11 | 11 |
12 namespace base { | 12 namespace base { |
13 namespace test { | 13 namespace test { |
14 | 14 |
15 // ScopedFeatureList resets the global FeatureList instance to a new empty | 15 // ScopedFeatureList resets the global FeatureList instance to a new empty |
16 // instance and restores the original instance upon destruction. | 16 // instance and restores the original instance upon destruction. |
17 // Note: Re-using the same object is not allowed. To reset the feature | 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 | 18 // list and initialize it anew, destroy an existing scoped list and init |
19 // a new one. | 19 // a new one. |
| 20 // |
| 21 // ScopedFeatureList needs to be initialized (via one of Init... methods) |
| 22 // before running code that inspects the state of features. In practice this |
| 23 // means: |
| 24 // - In browser tests, one of Init... methods should be called from the |
| 25 // overriden ::testing::Test::SetUp method. For example: |
| 26 // void SetUp() override { |
| 27 // scoped_feature_list_.InitAndEnableFeature(features::kMyFeatureHere); |
| 28 // InProcessBrowserTest::SetUp(); |
| 29 // } |
20 class ScopedFeatureList final { | 30 class ScopedFeatureList final { |
21 public: | 31 public: |
22 ScopedFeatureList(); | 32 ScopedFeatureList(); |
23 ~ScopedFeatureList(); | 33 ~ScopedFeatureList(); |
24 | 34 |
25 // Initializes and registers a FeatureList instance with no overrides. | 35 // Initializes and registers a FeatureList instance with no overrides. |
26 void Init(); | 36 void Init(); |
27 | 37 |
28 // Initializes and registers the given FeatureList instance. | 38 // Initializes and registers the given FeatureList instance. |
29 void InitWithFeatureList(std::unique_ptr<FeatureList> feature_list); | 39 void InitWithFeatureList(std::unique_ptr<FeatureList> feature_list); |
(...skipping 20 matching lines...) Expand all Loading... |
50 private: | 60 private: |
51 std::unique_ptr<FeatureList> original_feature_list_; | 61 std::unique_ptr<FeatureList> original_feature_list_; |
52 | 62 |
53 DISALLOW_COPY_AND_ASSIGN(ScopedFeatureList); | 63 DISALLOW_COPY_AND_ASSIGN(ScopedFeatureList); |
54 }; | 64 }; |
55 | 65 |
56 } // namespace test | 66 } // namespace test |
57 } // namespace base | 67 } // namespace base |
58 | 68 |
59 #endif // BASE_TEST_SCOPED_FEATURE_LIST_H_ | 69 #endif // BASE_TEST_SCOPED_FEATURE_LIST_H_ |
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