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JMockit is a Java toolkit for automated developer testing. It contains mocking/faking APIs and a code coverage tool, 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 Rogério Liesenfeld
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.expectations.argumentMatching;

import javax.annotation.*;

public final class NullityMatcher implements ArgumentMatcher
{
   public static final ArgumentMatcher INSTANCE = new NullityMatcher();

   private NullityMatcher() {}

   @Override
   public boolean same(@Nonnull NullityMatcher other) { return true; }

   @Override
   public boolean matches(@Nullable Object argValue) { return argValue == null; }

   @Override
   public void writeMismatchPhrase(@Nonnull ArgumentMismatch argumentMismatch) { argumentMismatch.append("null"); }
}