/**
 * 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.pdfbox.jbig2.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

import java.util.Iterator;

import org.apache.pdfbox.jbig2.util.ServiceLookup;
import org.junit.Test;

public class ServiceLookupTest
{

    @Test
    public void withDefaultClassLoader()
    {
        runTest(null);
    }

    @Test
    public void withContextClassLoader()
    {
        runTest(Thread.currentThread().getContextClassLoader());
    }

    @Test
    public void withClassLoaderFromClass()
    {
        runTest(TestService.class.getClassLoader());
    }

    private void runTest(ClassLoader clsLoader)
    {
        ServiceLookup<TestService> serviceLookup = new ServiceLookup<TestService>();

        Iterator<TestService> services = clsLoader != null
                ? serviceLookup.getServices(TestService.class, clsLoader)
                : serviceLookup.getServices(TestService.class);

        assertTrue(services.hasNext());
        assertEquals(TestServiceImpl.class, services.next().getClass());
    }

}