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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) 2006-2011 Rogério Liesenfeld
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.expectations.argumentMatching;

import mockit.internal.util.*;

public final class ClassMatcher implements ArgumentMatcher
{
   private final String nameOfExpectedClass;
   private final Class matchableClass;

   public ClassMatcher(Class expectedClass)
   {
      nameOfExpectedClass = expectedClass.getName();

      Class wrapperTypeIfPrimitive = Utilities.PRIMITIVE_TO_WRAPPER.get(expectedClass);
      matchableClass = wrapperTypeIfPrimitive == null ? expectedClass : wrapperTypeIfPrimitive;
   }

   public boolean matches(Object argValue)
   {
      return matchableClass.isInstance(argValue);
   }

   public void writeMismatchPhrase(ArgumentMismatch argumentMismatch)
   {
      argumentMismatch.append("an instance of ").append(nameOfExpectedClass);
   }
}