DeleteCommand deleteCmd = new DeleteCommand( dataSource1 );
DeleteCommand deleteCmd = new DeleteCommand( dataSource );
	public void testDeleteDataSource( )	{		SlotHandle parent = getReportDesignHandle( ).getDataSources( );		assertEquals( 0, parent.getCount( ) );		createDataSource1( );		createDataSet( );		assertEquals( 1, parent.getCount( ) );		assertEquals( dataSource1, parent.get( 0 ) );		assertEquals( dataSource1, dataSet.getDataSource( ) );		DeleteCommand deleteCmd = new DeleteCommand( dataSource1 );		assertTrue( deleteCmd.canExecute( ) );		deleteCmd.execute( );		assertEquals( 0, parent.getCount( ) );		assertNull( dataSet.getDataSource( ) );	}