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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.*;

import mockit.internal.util.*;

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

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

      Class wrapperTypeIfPrimitive = AutoBoxing.getWrapperType(expectedClass);
      matchableClass = wrapperTypeIfPrimitive == null ? expectedClass : wrapperTypeIfPrimitive;
   }

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

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