/** * 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.hadoop.gateway.identityasserter.hadoop.groups.filter; import static org.hamcrest.MatcherAssert.assertThat; import static org.junit.Assert.fail; import java.util.Iterator; import java.util.ServiceLoader; import org.apache.hadoop.gateway.deploy.ProviderDeploymentContributor; import org.junit.Test; /** * Test for {@link HadoopGroupProviderDeploymentContributor} * @since 0.11 */ public class HadoopGroupProviderDeploymentContributorTest { @Test public void testServiceLoader() throws Exception { ServiceLoader<ProviderDeploymentContributor> loader = ServiceLoader .load(ProviderDeploymentContributor.class); Iterator<ProviderDeploymentContributor> iterator = loader.iterator(); assertThat("Service iterator empty.", iterator.hasNext()); while (iterator.hasNext()) { Object object = iterator.next(); if (object instanceof HadoopGroupProviderDeploymentContributor) { return; } } fail("Failed to find " + HadoopGroupProviderDeploymentContributor.class.getName() + " via service loader."); } }