/*
 * 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.
 *
 * <p>
 * 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.
     *
     * Vararg are expanded in this array.
     *
     * @return arguments
     */
    Object[] getArguments();

    /**
     * Returns casted argument at the given index.
     *
     * Can lookup in expanded arguments form {@link #getArguments()}.
     *
     * @param index argument index
     * @return casted argument at the given index
     * @since 2.1.0
     */
    <T> T getArgument(int index);

    /**
     * calls real method
     * <p>
     * <b>Warning:</b> 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;
}