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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) 2006-2012 Rogério Liesenfeld
 * This file is subject to the terms of the MIT license (see LICENSE.txt).
 */
package mockit.internal.expectations.argumentMatching;

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

   private NonNullityMatcher() {}
   public boolean matches(Object argValue) { return argValue != null; }
   public void writeMismatchPhrase(ArgumentMismatch argumentMismatch) { argumentMismatch.append("not null"); }
}