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JMockit is a Java toolkit for developer (unit/integration) testing. It contains mocking APIs and other tools, supporting both JUnit and TestNG. The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested in isolation from selected dependencies.

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/*
 * Copyright (c) 2006-2013 Rogério Liesenfeld
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.expectations.argumentMatching;

import org.jetbrains.annotations.*;

/**
 * An argument matcher for the recording/verification of expectations.
 */
public interface ArgumentMatcher
{
   /**
    * Evaluates the matcher for the given argument.
    */
   boolean matches(@Nullable Object argValue);

   /**
    * Writes a phrase to be part of an error message describing an argument mismatch.
    */
   void writeMismatchPhrase(@NotNull ArgumentMismatch argumentMismatch);
}