/**
 * Licensed 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.
 *
 * Copyright 2012-2015 the original author or authors.
 */
package org.assertj.swing.listener;

import static java.awt.AWTEvent.WINDOW_EVENT_MASK;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.swing.test.awt.TestAWTEvents.singletonAWTEventMock;
import static org.assertj.swing.test.awt.Toolkits.newToolkitStub;

import java.awt.AWTEvent;
import java.awt.event.AWTEventListener;

import org.assertj.swing.test.awt.ToolkitStub;
import org.junit.Before;
import org.junit.Test;

/**
 * Tests for {@link WeakEventListener#eventDispatched(AWTEvent)}.
 * 
 * @author Alex Ruiz
 */
public class WeakEventListener_eventDispatched_Test {
  private static final long EVENT_MASK = WINDOW_EVENT_MASK;

  private ToolkitStub toolkit;
  private UnderlyingEventListener underlying;
  private WeakEventListener listener;

  @Before
  public void setUp() {
    toolkit = newToolkitStub();
    underlying = new UnderlyingEventListener();
    listener = WeakEventListener.attachAsWeakEventListener(toolkit, underlying, EVENT_MASK);
  }

  @Test
  public void should_Wrap_Given_EventListener_And_Add_Itself_To_Toolkit_With_Given_Mask() {
    assertThat(listener.underlyingListener()).isSameAs(underlying);
    assertThat(toolkit.contains(listener, EVENT_MASK)).isTrue();
  }

  @Test
  public void should_Dispatch_Events_To_Wrapped_EventListener() {
    AWTEvent event = singletonAWTEventMock();
    listener.eventDispatched(event);
    assertThat(underlying.dispatchedEvent).isSameAs(event);
  }

  @Test
  public void should_Remove_Itself_From_Toolkit_If_Wrapped_EventListener_Is_Null() {
    listener.simulateUnderlyingListenerIsGarbageCollected();
    listener.eventDispatched(singletonAWTEventMock());
    assertThat(toolkit.contains(listener, EVENT_MASK)).isFalse();
  }

  private static class UnderlyingEventListener implements AWTEventListener {
    AWTEvent dispatchedEvent;

    UnderlyingEventListener() {
    }

    @Override
    public void eventDispatched(AWTEvent event) {
      dispatchedEvent = event;
    }
  }
}