1 /* 2 * Copyright (C) 2016 The Android Open Source Project 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 android.app.test; 18 19 import org.mockito.invocation.InvocationOnMock; 20 import org.mockito.stubbing.Answer; 21 22 import java.lang.reflect.InvocationTargetException; 23 import java.lang.reflect.Method; 24 import java.util.Arrays; 25 26 /** 27 * Utilities for creating Answers for mock objects 28 */ 29 public class MockAnswerUtil { 30 31 /** 32 * Answer that calls the method in the Answer called "answer" that matches the type signature of 33 * the method being answered. An error will be thrown at runtime if the signature does not match 34 * exactly. 35 */ 36 public static class AnswerWithArguments implements Answer<Object> { 37 @Override answer(InvocationOnMock invocation)38 public final Object answer(InvocationOnMock invocation) throws Throwable { 39 Method method = invocation.getMethod(); 40 try { 41 Method implementation = getClass().getMethod("answer", method.getParameterTypes()); 42 if (!implementation.getReturnType().equals(method.getReturnType())) { 43 throw new RuntimeException("Found answer method does not have expected return " 44 + "type. Expected: " + method.getReturnType() + ", got " 45 + implementation.getReturnType()); 46 } 47 Object[] args = invocation.getArguments(); 48 try { 49 return implementation.invoke(this, args); 50 } catch (IllegalAccessException e) { 51 throw new RuntimeException("Error invoking answer method", e); 52 } catch (InvocationTargetException e) { 53 throw e.getCause(); 54 } 55 } catch (NoSuchMethodException e) { 56 throw new RuntimeException("Could not find answer method with the expected args " 57 + Arrays.toString(method.getParameterTypes()), e); 58 } 59 } 60 } 61 62 } 63