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Mock objects library for java

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

package org.mockito.invocation;

import java.io.Serializable;
import java.lang.reflect.Method;

/**
 * An invocation on a mock
 * 
 * A placeholder for mock, the method that was called and the arguments that were passed.
 */
public interface InvocationOnMock extends Serializable {

    /**
     * returns the mock object 
     * 
     * @return mock object
     */
    Object getMock();

    /**
     * returns the method
     * 
     * @return method
     */
    Method getMethod();

    /**
     * returns arguments passed to the method
     * 
     * @return arguments
     */
    Object[] getArguments();
    
    /**
    * Returns casted argument using position
    * @param index argument position
    * @param clazz argument type
    * @return casted argument on position
    */
     T getArgumentAt(int index, Class clazz);


    /**
     * calls real method
     * 
     * Warning: depending on the real implementation it might throw exceptions  
     *
     * @return whatever the real method returns / throws
     * @throws Throwable in case real method throws 
     */
    Object callRealMethod() throws Throwable;
}