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
assertEquals( "cus blue key", color.getDisplayNameID( ) ); 
		
		PropertyHandle configVarHandle = libraryHandle2
				.getPropertyHandle( Library.CONFIG_VARS_PROP );
		List configVars = configVarHandle.getListValue( );
		assertEquals( 4, configVars.size( ) );
		ConfigVariable var = (ConfigVariable) configVars.get( 0 );
		assertEquals( "var1", var.getName( ) ); 
		assertEquals( "mumble.jpg", var.getValue( ) ); 
		var = (ConfigVariable) configVars.get( 1 );
		assertEquals( "var2", var.getName( ) ); 
		assertEquals( "abcdefg", var.getValue( ) ); 
		var = (ConfigVariable) configVars.get( 2 );
		assertEquals( "var3", var.getName( ) ); 
		assertEquals( "", var.getValue( ) ); 
		var = (ConfigVariable) configVars.get( 3 );
		assertEquals( "var4", var.getName( ) ); 
		assertEquals( null, var.getValue( ) );
		
		PropertyHandle imageHandle = libraryHandle2
				.getPropertyHandle( Library.IMAGES_PROP );
		List images = imageHandle.getListValue( );
		assertEquals( 3, images.size( ) );
		EmbeddedImage image = (EmbeddedImage) images.get( 0 );
		assertEquals( "image1", image.getName( ) ); 
		assertEquals( "image/bmp", image.getType( design ) ); 		
		assertEquals( "imagetesAAA", 
				new String( Base64.encodeBase64( image.getData( design ) ) )
						.substring( 0, 11 ) );
		image = (EmbeddedImage) images.get( 1 );