001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.binding;
016    
017    import static org.easymock.EasyMock.expect;
018    
019    import org.apache.hivemind.ApplicationRuntimeException;
020    import org.apache.hivemind.Location;
021    import org.apache.tapestry.IComponent;
022    import org.apache.tapestry.coerce.ValueConverter;
023    import org.testng.annotations.Test;
024    
025    /**
026     * Tests for {@link org.apache.tapestry.binding.ComponentBinding}.
027     * 
028     * @author Howard M. Lewis Ship
029     * @since 4.0
030     */
031    @Test
032    public class TestComponentBinding extends BindingTestCase
033    {
034        public void testGetObject()
035        {
036            IComponent nested = newComponent();
037            IComponent component = newMock(IComponent.class);
038            
039            expect(component.getComponent("foo")).andReturn(nested);
040    
041            ValueConverter vc = newValueConverter();
042    
043            Location l = newLocation();
044    
045            replay();
046    
047            ComponentBinding b = new ComponentBinding("param", vc, l, component, "foo");
048    
049            assertSame(component, b.getComponent());
050            assertSame(nested, b.getObject());
051    
052            verify();
053        }
054    
055        public void testGetObjectFailure()
056        {
057            IComponent component = newMock(IComponent.class);
058    
059            Throwable t = new ApplicationRuntimeException("No such component.");
060    
061            expect(component.getComponent("foo")).andThrow(t);
062    
063            ValueConverter vc = newValueConverter();
064    
065            Location l = newLocation();
066    
067            replay();
068    
069            ComponentBinding b = new ComponentBinding("param", vc, l, component, "foo");
070    
071            try
072            {
073                b.getObject();
074                unreachable();
075            }
076            catch (ApplicationRuntimeException ex)
077            {
078                assertEquals(t.getMessage(), ex.getMessage());
079                assertSame(t, ex.getRootCause());
080                assertSame(l, ex.getLocation());
081            }
082    
083            verify();
084        }
085    }