/*
 * Copyright (c) 2007 Mockito contributors
 * This program is made available under the terms of the MIT License.
 */
package org.mockitousage.basicapi;

import static org.junit.Assert.assertSame;
import static org.mockitoutil.SimpleSerializationUtil.serializeAndBack;

import java.io.Serializable;

import org.junit.Test;
import org.mockitoutil.TestBase;

@SuppressWarnings("serial")
public class ObjectsSerializationTest extends TestBase implements Serializable {

    // Ok, this test has nothing to do with mocks but it shows fundamental feature of java
    // serialization that
    // plays important role in mocking:
    // Serialization/deserialization actually replaces all instances of serialized object in the
    // object graph (if there are any)
    // thanks to that mechanizm, stubbing & verification can correctly match method invocations
    // because
    // one of the parts of invocation matching is checking if mock object is the same

    class Bar implements Serializable {
        Foo foo;
    }

    class Foo implements Serializable {
        Bar bar;

        Foo() {
            bar = new Bar();
            bar.foo = this;
        }
    }

    @Test
    public void shouldSerializationWork() throws Exception {
        // given
        Foo foo = new Foo();
        // when
        foo = serializeAndBack(foo);
        // then
        assertSame(foo, foo.bar.foo);
    }
}