Attachment 41233 Details for Bug 141435 – JUnit showing the issue

JUnit showing the issue

ListViewerRefreshTests.java (text/plain), 3.39 KB, created by Brad Reynolds

on 2006-05-11 17:06:15 EDT

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Creator: Brad Reynolds

Created: 2006-05-11 17:06:15 EDT

Size: 3.39 KB

patch

obsolete

>import java.util.ArrayList;
>import java.util.List;
>
>import junit.framework.TestCase;
>
>import org.eclipse.jface.viewers.IStructuredContentProvider;
>import org.eclipse.jface.viewers.ListViewer;
>import org.eclipse.jface.viewers.StructuredSelection;
>import org.eclipse.jface.viewers.Viewer;
>import org.eclipse.swt.SWT;
>import org.eclipse.swt.layout.FillLayout;
>import org.eclipse.swt.widgets.Display;
>import org.eclipse.swt.widgets.Label;
>import org.eclipse.swt.widgets.Shell;
>
>public class ListViewerRefreshTests extends TestCase {
>	/**
>	 * Used for viewing the UI.  Set to 0 if not wanting to see the UI.
>	 */
>	private static final int DELAY = 1000;
>	private Shell shell = null;
>	private Label label = null;
>	private ListViewer viewer = null;
>	private ArrayList input = null;
>	
>	protected void setUp() throws Exception {
>		shell = new Shell();
>		shell.setSize(400, 200);
>		shell.setLayout(new FillLayout());		
>		label = new Label(shell, SWT.WRAP);
>		viewer = new ListViewer(shell);
>		input = new ArrayList();
>		
>		for (int i = 0; i < 50; i++) {
>			input.add("item " + i); //$NON-NLS-1$
>		}
>		
>		viewer.setContentProvider(new ContentProvider());
>		viewer.setInput(input);
>		shell.layout();
>		shell.open();
>	}
>	
>	/**
>	 * Asserts the ability to refresh without a selection and preserve the scrolled to position.
>	 * 
>	 * @throws Exception
>	 */
>	public void testNoSelectionRefresh() throws Exception {
>		shell.setText("Lost Scrolled Position Test"); //$NON-NLS-1$
>		readAndDispatch();
>		
>		run("Scrolled to position 30.", new Runnable() { //$NON-NLS-1$
>			public void run() {
>				viewer.reveal(input.get(30));				
>			}			
>		});
>		
>		run("Refreshed viewer without a selection.", new Runnable() { //$NON-NLS-1$
>			public void run() {
>				viewer.refresh();				
>			}
>		});
>		
>		//BUG: The top index should not be the first item.
>		assertTrue(viewer.getList().getTopIndex() != 0);
>	}
>	
>	/**
>	 * Asserts the ability to refresh with a selection and preserve the scrolled to position.
>	 * 
>	 * @throws Exception
>	 */
>	public void testSelectionRefresh() throws Exception {
>		shell.setText("Preserved Scrolled Position Test"); //$NON-NLS-1$
>		readAndDispatch();
>		
>		run("Setting selection to index 30.", new Runnable() { //$NON-NLS-1$
>			public void run() {
>				viewer.setSelection(new StructuredSelection(input.get(30)));		
>			}			
>		}); 
>		
>		run("Refreshed viewer with selection.", new Runnable() { //$NON-NLS-1$
>			public void run() {
>				viewer.refresh();				
>			}			
>		});
>		
>		assertTrue(viewer.getList().getTopIndex() != 0);		
>	}
>	
>	/**
>	 * Runs the runnable and displays the description.
>	 * 
>	 * @param description
>	 * @param runnable
>	 */
>	private void run(String description, Runnable runnable) {
>		runnable.run();
>		label.setText(description);
>		
>		readAndDispatch();
>	}
>	
>	/**
>	 * Flush UI events and {@link #DELAY delays}.
>	 */
>	private void readAndDispatch() {
>		Display display = Display.getCurrent();
>		display.readAndDispatch();
>		
>		try {
>			display.getThread().sleep(DELAY);
>		} catch (InterruptedException e) {
>			e.printStackTrace();
>		}
>	}
>	
>	private class ContentProvider implements IStructuredContentProvider {
>
>		public Object[] getElements(Object inputElement) {
>			return ((List) inputElement).toArray();
>		}
>
>		public void dispose() {
>		}
>
>		public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
>		}		
>	}
>}

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Attachments on bug 141435: 41233 | 41406 | 41407 | 50920