001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *        http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 */
019
020package org.apache.isis.core.commons.lang;
021
022import org.hamcrest.BaseMatcher;
023import org.hamcrest.Description;
024import org.hamcrest.Matcher;
025
026public final class ClassMatchers {
027
028    public static Matcher<?> isSubclassOf(final Class<?> superClass) {
029        return new BaseMatcher<Object>() {
030            @Override
031            public boolean matches(final Object item) {
032                final Class<?> cls = (Class<?>) item;
033                return superClass.isAssignableFrom(cls);
034            }
035
036            @Override
037            public void describeTo(final Description description) {
038                description.appendText("is subclass of " + superClass.getName());
039            }
040        };
041    }
042
043}