AbstractViewComponentTest.java

/*
 * Copyright (c) 2011 Petter Holmström
 *
 * 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.
 */
package com.github.peholmst.mvp4vaadin;

import static org.junit.Assert.*;

import java.util.ArrayList;
import java.util.List;

import org.junit.Before;
import org.junit.Test;

import com.github.peholmst.mvp4vaadin.events.DisplayNameChangedViewEvent;
import com.github.peholmst.mvp4vaadin.testdata.MyTestPresenter;
import com.github.peholmst.mvp4vaadin.testdata.MyTestPresenter2;
import com.github.peholmst.mvp4vaadin.testdata.MyTestView;
import com.github.peholmst.mvp4vaadin.testdata.MyTestViewComponent;
import com.github.peholmst.mvp4vaadin.testdata.MyTestViewComponent2;

/**
 * Test case for {@link AbstractViewComponent}.
 * 
 * @author Petter Holmström
 * @since 1.0
 */
public class AbstractViewComponentTest {
	
	MyTestPresenter presenter;
	
	MyTestViewComponent view;
	
	@Before
	public void setUp() {
		presenter = new MyTestPresenter();
		view = new MyTestViewComponent(MyTestPresenter.class, MyTestView.class);
	}	
	
	@Test
	public void createPresenter() {
		final MyTestPresenter createdPresenter = view.createPresenter();
		assertNotNull(createdPresenter);
		assertSame(view, createdPresenter.getView());
	}	
	
	@Test
	public void setGetDisplayName() {
		view.setDisplayName("displayName");
		assertEquals("displayName", view.getDisplayName());
	}
	
	@Test
	public void setGetViewDescription() {
		view.setViewDescription("description");
		assertEquals("description", view.getViewDescription());
		assertNull(view.getDescription()); // We invoke the Vaadin getDescription() method
	}
	
	@Test
	public void setGetPresenter() {
		view.setPresenter(presenter);
		assertSame(presenter, view.getPresenter());
	}
	
	@Test
	public void init() {
		view.setPresenter(presenter);
		view.init();
		
		assertTrue(view.isInitialized());
		assertTrue(presenter.initialized);
	}
	
	@Test
	public void fireViewEvent() {
		final List<ViewEvent> receivedEvents = new ArrayList<ViewEvent>();
		@SuppressWarnings("serial")
		final ViewListener listener = new ViewListener() {

			@Override
			public void handleViewEvent(ViewEvent event) {
				receivedEvents.add(event);
			}			
		};
		
		final ViewEvent event = new DisplayNameChangedViewEvent(view, null, "blah");
		
		view.addListener(listener);
		view.fireViewEvent(event);
		view.removeListener(listener);
		view.fireViewEvent(event);
		
		assertEquals(1, receivedEvents.size());
		assertSame(event, receivedEvents.get(0));
	}
	
	@Test
	public void getViewComponent() {
		assertSame(view, view.getViewComponent());
	}
	
	@Test
	public void createPresenterUsingIntrospection() {
		view = new MyTestViewComponent();
		MyTestPresenter createdPresenter = view.createPresenter();
		assertSame(view, createdPresenter.getView());
	}
	
	@Test
	public void createPresenterUsingIntrospectionAndDefaultPresenterConstructor() {
		MyTestViewComponent2 createdView = new MyTestViewComponent2();
		MyTestPresenter2 createdPresenter = createdView.createPresenter();
		assertSame(createdView, createdPresenter.getView());
	}
}