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 java.lang.reflect.InvocationTargetException; 20 21 /** Creates a test's early component. */ 22 public abstract class EarlySingletonComponentCreator { 23 private static final String EARLY_SINGLETON_COMPONENT_CREATOR_IMPL = 24 "dagger.hilt.android.internal.testing.EarlySingletonComponentCreatorImpl"; 25 26 private static final String ERROR_MSG = 27 "The EarlyComponent was requested but does not exist. Check that you have annotated " 28 + "your test class with @HiltAndroidTest and that the processor is running over your " 29 + "test."; 30 createComponent()31 static Object createComponent() { 32 try { 33 return Class.forName(EARLY_SINGLETON_COMPONENT_CREATOR_IMPL) 34 .asSubclass(EarlySingletonComponentCreator.class) 35 .getDeclaredConstructor() 36 .newInstance() 37 .create(); 38 // We catch each individual exception rather than using a multicatch because multi-catch will 39 // get compiled to the common but new super type ReflectiveOperationException, which is not 40 // allowed on API < 19. See b/187826710. 41 } catch (ClassNotFoundException e) { 42 throw new RuntimeException(ERROR_MSG, e); 43 } catch (NoSuchMethodException e) { 44 throw new RuntimeException(ERROR_MSG, e); 45 } catch (IllegalAccessException e) { 46 throw new RuntimeException(ERROR_MSG, e); 47 } catch (InstantiationException e) { 48 throw new RuntimeException(ERROR_MSG, e); 49 } catch (InvocationTargetException e) { 50 throw new RuntimeException(ERROR_MSG, e); 51 } 52 } 53 54 /** Creates the early test component. */ create()55 abstract Object create(); 56 } 57