org.eclipse.amp.agf.test/src/org/eclipse/amp/agf/chart/test/ResourceManagerTest.java

package org.eclipse.amp.agf.chart.test;


import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import org.eclipse.amp.agf.chart.ChartEditPart;
import org.eclipse.amp.agf.chart.ChartEditPart.ResourceManager;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.junit.Before;
import org.junit.Test;

public class ResourceManagerTest {
	
	private ResourceManager classToTest;
	@Before
	public void setUp() throws Exception {
		classToTest = new ChartEditPart().getResourceManager();
	}
	/**
	 * Would old gc be desposed?
	 * Can we set null to dispose the gc
	 */
	@Test
	public void testSetGc(){
		Shell shell = new Shell();
		GC gc = new GC(shell);
		assertFalse(gc.isDisposed());
		
		classToTest.setGc(gc);
		assertFalse(gc.isDisposed());
		
		GC gc2 = new GC(shell);
		classToTest.setGc(gc2);
		assertTrue(gc.isDisposed());
		assertFalse(gc2.isDisposed());
		
		try{
			classToTest.setGc(null);
			assertTrue(gc2.isDisposed());
		}catch(Exception e){
			fail(e.getMessage());
		}
		shell.dispose();
	}
	/**
	 * Would old image be desposed?
	 * Can we set null to dispose the image
	 */
	@Test
	public void testSetImage(){
		Shell shell = new Shell();
		Image image = new Image(Display.getCurrent(), 10, 10);
		assertFalse(image.isDisposed());
		
		classToTest.setImage(image);
		assertFalse(image.isDisposed());
		
		Image image2 = new Image(Display.getCurrent(), 10, 10);
		classToTest.setImage(image2);
		assertTrue(image.isDisposed());
		assertFalse(image2.isDisposed());
		
		try{
			classToTest.setImage(null);
			assertTrue(image2.isDisposed());
		}catch(Exception e){
			fail(e.getMessage());
		}
		shell.dispose();
	}
}