gremlin-core/src/test/java/org/apache/tinkerpop/gremlin/AssertHelper.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.tinkerpop.gremlin;

import static org.junit.Assert.assertTrue;

import java.lang.reflect.Constructor;
import java.lang.reflect.Modifier;

/**
 * @author Stephen Mallette (http://stephen.genoprime.com)
 */
public class AssertHelper {

    protected AssertHelper() {}
    
    public static void assertIsUtilityClass(final Class<?> utilityClass) throws Exception {
        final Constructor constructor = utilityClass.getDeclaredConstructor();

        assertTrue(Modifier.isFinal(utilityClass.getModifiers()));
        assertTrue(Modifier.isPrivate(constructor.getModifiers()));
        constructor.setAccessible(true);
        constructor.newInstance();
    }
        
}