/*
    * 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.commons.configuration2.builder;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertSame;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.Arrays;
  
  import org.apache.commons.configuration2.event.ConfigurationEvent;
  import org.apache.commons.configuration2.event.EventListenerRegistrationData;
  import org.apache.commons.configuration2.event.EventListenerTestImpl;
  import org.junit.jupiter.api.Test;
  
  /**
   * Test class for {@code EventListenerParameters}.
   */
  public class TestEventListenerParameters {
      /**
       * Tests whether an event listener with its type can be added.
       */
      @Test
      public void testAddEventListener() {
          final EventListenerTestImpl listener = new EventListenerTestImpl(null);
          final EventListenerParameters parameters = new EventListenerParameters();
          assertSame(parameters, parameters.addEventListener(ConfigurationEvent.ADD_PROPERTY, listener));
          assertEquals(1, parameters.getListeners().getRegistrations().size());
          final EventListenerRegistrationData<?> reg = parameters.getListeners().getRegistrations().get(0);
          assertEquals(ConfigurationEvent.ADD_PROPERTY, reg.getEventType());
          assertEquals(listener, reg.getListener());
      }
  
      /**
       * Tests whether an event listener registration can be added.
       */
      @Test
      public void testAddEventListenerRegistration() {
          final EventListenerRegistrationData<ConfigurationEvent> reg = new EventListenerRegistrationData<>(ConfigurationEvent.SET_PROPERTY,
              new EventListenerTestImpl(null));
          final EventListenerParameters parameters = new EventListenerParameters();
          assertSame(parameters, parameters.addEventListener(reg));
          assertEquals(Arrays.asList(reg), parameters.getListeners().getRegistrations());
      }
  
      /**
       * Tests the map with parameters.
       */
      @Test
      public void testGetParameters() {
          final EventListenerParameters parameters = new EventListenerParameters();
          assertTrue(parameters.getParameters().isEmpty());
      }
  
      /**
       * Tests that the list of event listeners is empty for a newly created instance.
       */
      @Test
      public void testRegistrationsAfterCreation() {
          final EventListenerParameters parameters = new EventListenerParameters();
          assertTrue(parameters.getListeners().getRegistrations().isEmpty());
      }
  }