1 /* 2 * Copyright (C) 2021 The Dagger Authors. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package dagger.hilt.android.internal.testing; 18 19 import android.app.Application; 20 import java.lang.reflect.InvocationTargetException; 21 22 /** Creates a test's early component. */ 23 public abstract class EarlySingletonComponentCreator { 24 private static final String EARLY_SINGLETON_COMPONENT_CREATOR_IMPL = 25 "dagger.hilt.android.internal.testing.EarlySingletonComponentCreatorImpl"; 26 27 private static final String ERROR_MSG = 28 "The EarlyComponent was requested but does not exist. Check that you have annotated " 29 + "your test class with @HiltAndroidTest and that the processor is running over your " 30 + "test."; 31 createComponent(Application application)32 static Object createComponent(Application application) { 33 try { 34 return Class.forName(EARLY_SINGLETON_COMPONENT_CREATOR_IMPL) 35 .asSubclass(EarlySingletonComponentCreator.class) 36 .getDeclaredConstructor() 37 .newInstance() 38 .create(application); 39 // We catch each individual exception rather than using a multicatch because multi-catch will 40 // get compiled to the common but new super type ReflectiveOperationException, which is not 41 // allowed on API < 19. See b/187826710. 42 } catch (ClassNotFoundException e) { 43 throw new RuntimeException(ERROR_MSG, e); 44 } catch (NoSuchMethodException e) { 45 throw new RuntimeException(ERROR_MSG, e); 46 } catch (IllegalAccessException e) { 47 throw new RuntimeException(ERROR_MSG, e); 48 } catch (InstantiationException e) { 49 throw new RuntimeException(ERROR_MSG, e); 50 } catch (InvocationTargetException e) { 51 throw new RuntimeException(ERROR_MSG, e); 52 } 53 } 54 55 /** Creates the early test component. */ create(Application application)56 abstract Object create(Application application); 57 } 58