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/*
* Copyright 2001-2006 OFFIS, Tammo Freese
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.easymock;
/**
* Decides whether an actual argument is accepted.
*/
public interface IArgumentMatcher {
/**
* Returns whether this matcher accepts the given argument.
* <p>
* Like Object.equals(), it should be aware that the argument passed might
* be null and of any type. So you will usually start the method with an
* instanceof and/or null check.
* <p>
* The method should <b>never</b> assert if the argument doesn't match. It
* should only return false. EasyMock will take care of asserting if the
* call is really unexpected.
*
* @param argument the argument
* @return whether this matcher accepts the given argument.
*/
boolean matches(Object argument);
/**
* Appends a string representation of this matcher to the given buffer. In case
* of failure, the printed message will show this string to allow to know which
* matcher was used for the failing call.
*
* @param buffer the buffer to which the string representation is appended.
*/
void appendTo(StringBuffer buffer);
}
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