1 /* 2 * Copyright (c) 2007 Mockito contributors 3 * This program is made available under the terms of the MIT License. 4 */ 5 6 package org.mockitousage.basicapi; 7 8 import org.junit.Test; 9 import org.mockitoutil.TestBase; 10 11 import java.io.Serializable; 12 13 import static junit.framework.TestCase.assertSame; 14 import static org.mockitoutil.SimpleSerializationUtil.serializeAndBack; 15 16 @SuppressWarnings("serial") 17 public class ObjectsSerializationTest extends TestBase implements Serializable { 18 19 //Ok, this test has nothing to do with mocks but it shows fundamental feature of java serialization that 20 //plays important role in mocking: 21 //Serialization/deserialization actually replaces all instances of serialized object in the object graph (if there are any) 22 //thanks to that mechanizm, stubbing & verification can correctly match method invocations because 23 //one of the parts of invocation matching is checking if mock object is the same 24 25 class Bar implements Serializable { 26 Foo foo; 27 } 28 29 class Foo implements Serializable { 30 Bar bar; Foo()31 Foo() { 32 bar = new Bar(); 33 bar.foo = this; 34 } 35 } 36 37 @Test shouldSerializationWork()38 public void shouldSerializationWork() throws Exception { 39 //given 40 Foo foo = new Foo(); 41 //when 42 foo = serializeAndBack(foo); 43 //then 44 assertSame(foo, foo.bar.foo); 45 } 46 } 47