content: /*
   * Created on May 31, 2009
   *
   * 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 @2009-2013 the original author or authors.
   */
  package org.fest.swing.core;
  
  import static org.fest.assertions.Assertions.assertThat;
  import static org.fest.swing.test.awt.TestComponents.singletonComponentMock;
  import static org.fest.swing.test.awt.TestContainers.singletonContainerMock;
  import static org.fest.util.Arrays.array;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.awt.Component;
  import java.awt.Container;
  
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  /**
   * Tests for {@link HierarchyBasedFocusOwnerFinder#focusOwner()}.
   *
   * @author Alex Ruiz
   */
  public class HierarchyBasedFocusOwnerFinder_focusOwner_Test {
    private static Container container;
  
    private ContainerFocusOwnerFinder delegate;
    private HierarchyRootsSource rootsSource;
    private HierarchyBasedFocusOwnerFinder finder;
  
    @BeforeClass
    public static void setUpOnce() {
      container = singletonContainerMock();
    }
  
    @Before
    public void setUp() {
      delegate = mock(ContainerFocusOwnerFinder.class);
      rootsSource = mock(HierarchyRootsSource.class);
      finder = new HierarchyBasedFocusOwnerFinder(delegate, rootsSource);
    }
  
    @Test
    public void should_return_focus_owner_from_delegate() {
      Component focusOwner = singletonComponentMock();
      when(rootsSource.existingHierarchyRoots()).thenReturn(array(container));
      when(delegate.focusOwnerOf(container)).thenReturn(focusOwner);
      assertThat(finder.focusOwner()).isSameAs(focusOwner);
    }
  
    @Test
    public void should_return_null_if_delegate_did_not_find_focus_owner() {
      when(rootsSource.existingHierarchyRoots()).thenReturn(array(container));
      when(delegate.focusOwnerOf(container)).thenReturn(null);
      assertThat(finder.focusOwner()).isNull();
    }
  
    @Test
    public void should_return_null_if_there_are_not_any_root_Containers() {
      when(rootsSource.existingHierarchyRoots()).thenReturn(new Container[0]);
      assertThat(finder.focusOwner()).isNull();
    }
  }
  