content: /*
   * Created on Oct 25, 2007
   * 
   * 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 @2007-2013 the original author or authors.
   */
  package org.fest.swing.hierarchy;
  
  import static org.fest.assertions.Assertions.assertThat;
  import static org.fest.swing.edt.GuiActionRunner.execute;
  import static org.fest.swing.test.builder.JFrames.frame;
  import static org.fest.swing.test.builder.JTextFields.textField;
  
  import java.awt.Component;
  import java.awt.Container;
  import java.awt.Window;
  import java.util.Collection;
  
  import javax.swing.JFrame;
  
  import org.fest.swing.annotation.RunsInEDT;
  import org.fest.swing.edt.GuiQuery;
  import org.fest.swing.lock.ScreenLock;
  import org.fest.swing.test.core.EDTSafeTestCase;
  import org.fest.swing.test.swing.TestDialog;
  import org.fest.swing.test.swing.TestWindow;
  import org.junit.Before;
  import org.junit.Test;
  
  /**
   * Tests for {@link WindowChildrenFinder#nonExplicitChildrenOf(Container)}.
   * 
   * @author Yvonne Wang
   * @author Alex Ruiz
   */
  public class WindowChildrenFinder_nonExplicitChildrenOf_Test extends EDTSafeTestCase {
    private WindowChildrenFinder finder;
  
    @Before
    public void setUp() {
      finder = new WindowChildrenFinder();
    }
  
    @Test
    public void should_return_empty_Collection_if_Component_is_not_Window() {
      Container container = textField().createNew();
      assertThat(finder.nonExplicitChildrenOf(container)).isEmpty();
    }
  
    @Test
    public void should_return_empty_Collection_if_Component_is_null() {
      assertThat(finder.nonExplicitChildrenOf(null)).isEmpty();
    }
  
    @Test
    public void should_return_empty_Collection_if_Window_does_not_have_owned_Windows() {
      final JFrame frame = frame().createNew();
      Collection<Component> children = findChildren(finder, frame);
      assertThat(children).isEmpty();
    }
  
    @Test
    public void should_return_owned_Windows() {
      ScreenLock.instance().acquire(this);
      TestWindow window = TestWindow.createNewWindow(getClass());
      TestDialog dialog = TestDialog.createNewDialog(window);
      try {
        Collection<Component> children = findChildren(finder, window);
        assertThat(children).containsOnly(dialog);
      } finally {
        try {
          dialog.destroy();
          window.destroy();
        } finally {
          ScreenLock.instance().release(this);
        }
      }
    }
  
    @RunsInEDT
    private static Collection<Component> findChildren(final WindowChildrenFinder finder, final Window w) {
      return execute(new GuiQuery<Collection<Component>>() {
        @Override
        protected Collection<Component> executeInEDT() {
          return finder.nonExplicitChildrenOf(w);
        }
      });
    }
  }
  