Bug 183918 get relative file path of linkage library
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/library/DesignLoadLibraryTest.java
*             if any exception
	 */
	public void testExtendingLibraryTable( ) throws Exception
	{
		openDesign( "DesignWithElementReferenceLibrary.xml" ); 
		
		TableHandle table = (TableHandle) designHandle.findElement( "table3" ); 
		assertEquals( "Employee Table", table.getCaption( ) ); 
		
		SlotHandle headerSlot = table.getHeader( );
		assertEquals( 1, headerSlot.getCount( ) );
		RowHandle row = (RowHandle) headerSlot.get( 0 );
		assertEquals( 2, row.getCells( ).getCount( ) );
		
		SlotHandle detailSlot = table.getDetail( );
		assertEquals( 2, detailSlot.getCount( ) );
		row = (RowHandle) detailSlot.get( 0 );
		assertEquals( 2, row.getCells( ).getCount( ) );
		row = (RowHandle) detailSlot.get( 1 );
		assertEquals( 2, row.getCells( ).getCount( ) );
		
		row = (RowHandle) detailSlot.get( 0 );
		CellHandle cell = null;
		cell = (CellHandle) row.getCells( ).get( 0 ); 
		assertEquals( "label_1_1", cell.getContent( ).get( 0 ).getName( ) ); 
		LabelHandle interLabel = (LabelHandle) cell.getContent( ).get( 0 );
		String value = interLabel.getStringProperty( LabelHandle.TEXT_PROP );
		assertEquals( "Cell 1-1", value ); 
		cell = (CellHandle) row.getCells( ).get( 1 ); 
		assertEquals( "label_1_2", cell.getContent( ).get( 0 ).getName( ) );