tests/org.eclipse.graphiti.ui.tests/src/org/eclipse/graphiti/ui/tests/ResourceManagerTest.java

/*******************************************************************************
 * Copyright (c) 2016 iSencia Belgium NV.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Erwin De Ley - initial implementation
 *******************************************************************************/
package org.eclipse.graphiti.ui.tests;

import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertSame;

import org.easymock.EasyMock;
import org.eclipse.graphiti.tests.reuse.GFAbstractTestCase;
import org.eclipse.graphiti.ui.editor.DiagramBehavior;
import org.eclipse.graphiti.ui.editor.IDiagramContainerUI;
import org.eclipse.jface.resource.FontDescriptor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.widgets.Display;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

// TODO : figure out a way to test the disposal, via an invocation on DiagramBehavior.disposeAfterGefDispose()
// but this method is not visible for our test code...
public class ResourceManagerTest extends GFAbstractTestCase {

	private static TestDiagramBehavior diagramBehavior;
	private static Display display;

	@BeforeClass
	public static void before() {
		GFAbstractTestCase.before();
		display = Display.getDefault();
		diagramBehavior = new TestDiagramBehavior(EasyMock.createNiceMock(IDiagramContainerUI.class));
	}

	@AfterClass
	public static void after() {
		diagramBehavior.getResourceManager().dispose();
		display.dispose();
	}

	@Test
	public void testResourceManagerIsPresent() throws Exception {
		assertNotNull("JFace ResourceManager must be present on DiagramBehavior", diagramBehavior.getResourceManager());
	}

	@Test
	public void testColorCreation() throws Exception {
		Color color = diagramBehavior.getResourceManager().createColor(new RGB(100, 100, 100));
		assertNotNull(color);
	}

	@Test
	public void testColorReuse() throws Exception {
		Color color1 = diagramBehavior.getResourceManager().createColor(new RGB(100, 100, 100));
		Color color2 = diagramBehavior.getResourceManager().createColor(new RGB(100, 100, 100));
		assertSame(color1, color2);
	}

	@Test
	public void testFontCreation() throws Exception {
		Font font = diagramBehavior.getResourceManager().createFont(FontDescriptor.createFrom("Arial", 10, SWT.NORMAL));
		assertNotNull(font);
	}

	@Test
	public void testFontReuse() throws Exception {
		Font f1 = diagramBehavior.getResourceManager().createFont(FontDescriptor.createFrom("Arial", 10, SWT.NORMAL));
		Font f2 = diagramBehavior.getResourceManager().createFont(FontDescriptor.createFrom("Arial", 10, SWT.NORMAL));
		assertSame(f1, f2);
	}

	@Test
	public void testDisposal() throws Exception {
		FontDescriptor fontDescr = FontDescriptor.createFrom("Arial", 10, SWT.NORMAL);
		Font f1 = diagramBehavior.getResourceManager().createFont(fontDescr);
		RGB colorDescr = new RGB(100, 100, 100);
		Color c1 = diagramBehavior.getResourceManager().createColor(colorDescr);
		diagramBehavior.disposeAfterGefDispose();
		Font f2 = diagramBehavior.getResourceManager().createFont(fontDescr);
		Color c2 = diagramBehavior.getResourceManager().createColor(colorDescr);
		assertNotSame(f1, f2);
		assertNotSame(c1, c2);
	}

	private static class TestDiagramBehavior extends DiagramBehavior {
		public TestDiagramBehavior(IDiagramContainerUI diagramContainer) {
			super(diagramContainer);
		}

		@Override
		protected void disposeAfterGefDispose() {
			// TODO Auto-generated method stub
			super.disposeAfterGefDispose();
		}
	}
}