tests/org.eclipse.core.tests.runtime/src/org/eclipse/core/tests/runtime/IAdapterManagerTest.java

/**********************************************************************
 * Copyright (c) 2004 IBM Corporation and others. All rights reserved.   This
 * program and the accompanying materials are made available under the terms of
 * the Common Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors: 
 * IBM - Initial API and implementation
 **********************************************************************/
package org.eclipse.core.tests.runtime;

import junit.framework.TestCase;
import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.IAdapterManager;
import org.eclipse.core.runtime.Platform;

/**
 * Tests API on the IAdapterManager class.
 */
public class IAdapterManagerTest extends TestCase {
	private static final String NON_EXISTING = "com.does.not.Exist";
	private static final String TEST_ADAPTABLE = "org.eclipse.core.tests.runtime.TestAdaptable";
	private static final String TEST_ADAPTER = "org.eclipse.core.tests.runtime.TestAdapter";
	private IAdapterManager manager;
	public IAdapterManagerTest(String name) {
		super(name);
	}
	public IAdapterManagerTest() {
		super ("");
	}
	protected void setUp() throws Exception {
		manager = Platform.getAdapterManager();
	}
	/**
	 * Tests API method IAdapterManager.hasAdapter.
	 */
	public void testHasAdapter() {
		TestAdaptable adaptable = new TestAdaptable();
		//request non-existing adaptable
		assertTrue("1.0", !manager.hasAdapter("", NON_EXISTING));
		
		//request adapter that is in XML but has no registered factory
		assertTrue("1.1", manager.hasAdapter(adaptable, TEST_ADAPTER));

		//request adapter that is not in XML
		assertTrue("1.2", !manager.hasAdapter(adaptable, "java.lang.String"));
		
		//register an adapter factory that maps adaptables to strings
		IAdapterFactory fac = new IAdapterFactory() {
			public Object getAdapter(Object adaptableObject, Class adapterType) {
				if (adapterType == String.class)
					return adaptableObject.toString();
				return null;
			}
			public Class[] getAdapterList() {
				return new Class[] {String.class};
			}
		};
		manager.registerAdapters(fac, TestAdaptable.class);

		//request adapter for factory that we've just added
		assertTrue("1.3", manager.hasAdapter(adaptable, "java.lang.String"));
	}
}