1 /* 2 * Copyright (c) 2007 Mockito contributors 3 * This program is made available under the terms of the MIT License. 4 */ 5 package org.mockito.internal.stubbing.answers; 6 7 import java.io.Serializable; 8 9 import org.mockito.invocation.InvocationOnMock; 10 import org.mockito.stubbing.Answer; 11 import org.mockito.stubbing.ValidableAnswer; 12 13 import static org.mockito.internal.exceptions.Reporter.cannotStubVoidMethodWithAReturnValue; 14 import static org.mockito.internal.exceptions.Reporter.wrongTypeOfReturnValue; 15 16 public class Returns implements Answer<Object>, ValidableAnswer, Serializable { 17 18 private static final long serialVersionUID = -6245608253574215396L; 19 private final Object value; 20 21 public Returns(Object value) { 22 this.value = value; 23 } 24 25 public Object answer(InvocationOnMock invocation) throws Throwable { 26 return value; 27 } 28 29 @Override 30 public void validateFor(InvocationOnMock invocation) { 31 InvocationInfo invocationInfo = new InvocationInfo(invocation); 32 if (invocationInfo.isVoid()) { 33 throw cannotStubVoidMethodWithAReturnValue(invocationInfo.getMethodName()); 34 } 35 36 if (returnsNull() && invocationInfo.returnsPrimitive()) { 37 throw wrongTypeOfReturnValue(invocationInfo.printMethodReturnType(), "null", invocationInfo.getMethodName()); 38 } 39 40 if (!returnsNull() && !invocationInfo.isValidReturnType(returnType())) { 41 throw wrongTypeOfReturnValue(invocationInfo.printMethodReturnType(), printReturnType(), invocationInfo.getMethodName()); 42 } 43 } 44 45 private String printReturnType() { 46 return value.getClass().getSimpleName(); 47 } 48 49 private Class<?> returnType() { 50 return value.getClass(); 51 } 52 53 private boolean returnsNull() { 54 return value == null; 55 } 56 57 @Override 58 public String toString() { 59 return "Returns: " + value; 60 } 61 } 62
