1 /* 2 * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef API_TEST_TEST_DEPENDENCY_FACTORY_H_ 12 #define API_TEST_TEST_DEPENDENCY_FACTORY_H_ 13 14 #include <memory> 15 16 #include "api/test/video_quality_test_fixture.h" 17 18 namespace webrtc { 19 20 // Override this class if to inject custom components into WebRTC tests. 21 // Not all WebRTC tests get their components from here, so you need to make 22 // sure the tests you want actually use this class. 23 // 24 // This class is not thread safe and you need to make call calls from the same 25 // (test main) thread. 26 class TestDependencyFactory { 27 public: 28 virtual ~TestDependencyFactory() = default; 29 30 // The singleton MUST be stateless since tests execute in any order. It must 31 // be set before tests start executing. 32 static const TestDependencyFactory& GetInstance(); 33 static void SetInstance(std::unique_ptr<TestDependencyFactory> instance); 34 35 // Returns the component a test should use. Returning nullptr means that the 36 // test is free to use whatever defaults it wants. The injection components 37 // themselves can be mutable, but we need to make new ones for every test that 38 // executes so state doesn't spread between tests. 39 virtual std::unique_ptr<VideoQualityTestFixtureInterface::InjectionComponents> 40 CreateComponents() const; 41 42 private: 43 static std::unique_ptr<TestDependencyFactory> instance_; 44 }; 45 46 } // namespace webrtc 47 48 #endif // API_TEST_TEST_DEPENDENCY_FACTORY_H_ 49