code: /*
   * 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.skywalking.oap.server.core.alarm.provider;
  
  import java.util.Iterator;
  import java.util.ServiceLoader;
  import org.apache.skywalking.oap.server.configuration.api.ConfigurationModule;
  import org.apache.skywalking.oap.server.core.CoreModule;
  import org.apache.skywalking.oap.server.core.alarm.AlarmModule;
  import org.apache.skywalking.oap.server.library.module.ModuleProvider;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.powermock.reflect.Whitebox;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.mock;
  
  public class AlarmModuleProviderTest {
  
      private AlarmModuleProvider moduleProvider;
  
      @BeforeEach
      public void setUp() throws Exception {
          ServiceLoader<ModuleProvider> serviceLoader = ServiceLoader.load(ModuleProvider.class);
          Iterator<ModuleProvider> providerIterator = serviceLoader.iterator();
  
          assertTrue(providerIterator.hasNext());
  
          moduleProvider = (AlarmModuleProvider) providerIterator.next();
  
          moduleProvider.newConfigCreator();
  
          moduleProvider.prepare();
      }
  
      @Test
      public void name() {
          assertEquals("default", moduleProvider.name());
      }
  
      @Test
      public void module() {
          assertEquals(AlarmModule.class, moduleProvider.module());
      }
  
      @Test
      public void notifyAfterCompleted() throws Exception {
  
          NotifyHandler handler = mock(NotifyHandler.class);
  
          Whitebox.setInternalState(moduleProvider, "notifyHandler", handler);
          moduleProvider.notifyAfterCompleted();
      }
  
      @Test
      public void requiredModules() {
          String[] modules = moduleProvider.requiredModules();
          assertArrayEquals(new String[] {
              CoreModule.NAME,
              ConfigurationModule.NAME
          }, modules);
      }
  }
  