addTest(new TestSuite(ComboBoxPropertyDescriptorTest.class));

/*******************************************************************************

 * Copyright (c) 2003 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 Corporation - initial API and implementation

 *******************************************************************************/

package org.eclipse.ui.tests.propertysheet;

import junit.framework.TestCase;

import org.eclipse.jface.viewers.ILabelProvider;

import org.eclipse.jface.viewers.LabelProvider;

import org.eclipse.ui.views.properties.ComboBoxLabelProvider;

import org.eclipse.ui.views.properties.ComboBoxPropertyDescriptor;

/**

 * Test for new functionality pertaining to Bug 21013.

 * 

 * @since 3.0

 */

public class ComboBoxPropertyDescriptorTest extends TestCase {

    private String ID = "ID"; //$NON-NLS-1$

    private String NAME = "NAME"; //$NON-NLS-1$

    private String [] values = {"One", "Two", "Three"}; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$

    private ComboBoxPropertyDescriptor descriptor;

    /* (non-Javadoc)

     * @see junit.framework.TestCase#setUp()

     */

    protected void setUp() throws Exception {

        super.setUp();

        descriptor = new ComboBoxPropertyDescriptor(ID, NAME, values);

    }

    /* (non-Javadoc)

     * @see junit.framework.TestCase#tearDown()

     */

    protected void tearDown() throws Exception {

        super.tearDown();

    }

    /**

     * Tests the case where the user does not set an ILabelProvider.

     */

    public void testGetDefaultLabelProvider() {        

        ILabelProvider provider = descriptor.getLabelProvider();

        assertEquals("Default label provider is of the wrong type", //$NON-NLS-1$ 

                ComboBoxLabelProvider.class, 

                provider.getClass());

        for (int i = 0; i < values.length; i++) {

            String expected = values[i];

            assertEquals("Wrong label provided", //$NON-NLS-1$

                    expected,

                    provider.getText(new Integer(i)));

        }

        testWrongLabel(provider, new Object());

        testWrongLabel(provider, null);

        testWrongLabel(provider, new Integer(-1));

        testWrongLabel(provider, new Integer(values.length));

    }

    /**

     * Tests that a bad element object (an Integer outside the accepted range, 

     * null or an other Object) returns the empty String.

     * @param provider the provider to test against.

     * @param element the element to test.

     */

    public void testWrongLabel(ILabelProvider provider, Object element) {

        assertEquals("Wrong label provided in bad case", //$NON-NLS-1$

                "", //$NON-NLS-1$

                provider.getText(element));        

    }

    /**

     * Tests the case where the user sets their own ILabelProvider.

     */

    public void testSetGetLabelProvider() {

        ILabelProvider provider = new LabelProvider();

        descriptor.setLabelProvider(provider);

        ILabelProvider descProvider = descriptor.getLabelProvider();

        assertSame("Wrong label provider", //$NON-NLS-1$

                provider,

                descProvider);

    }

}