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JMockit is a Java toolkit for automated developer testing. It contains APIs for the creation of the objects to be tested, for mocking dependencies, and for faking external APIs; JUnit (4 & 5) and TestNG test runners are supported. It also contains an advanced code coverage tool.

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

import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;

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

    private NonNullityMatcher() {
    }

    @Override
    public boolean same(@NonNull NonNullityMatcher other) {
        return true;
    }

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

    @Override
    public void writeMismatchPhrase(@NonNull ArgumentMismatch argumentMismatch) {
        argumentMismatch.append("not null");
    }
}