@Test
public void withoutArg()
{

    Node result = transformer.transform( collectionNode, null );
    Assert.assertTrue( result instanceof CollectionNode );
    CollectionNode collection = (CollectionNode) result;
    Assert.assertEquals( "organisationUnits", collection.getName() );
    Assert.assertEquals( "testUrn", collection.getNamespace() );
    Assert.assertEquals( 2, collection.getUnorderedChildren().size() );
    Assert.assertEquals( "id", collection.getUnorderedChildren().get( 0 ).getName() );
    Assert.assertTrue( collection.getUnorderedChildren().get( 0 ) instanceof SimpleNode );
    Assert.assertEquals( "abc1", ( (SimpleNode) collection.getUnorderedChildren().get( 0 ) ).getValue() );
    Assert.assertEquals( "id", collection.getUnorderedChildren().get( 1 ).getName() );
    Assert.assertTrue( collection.getUnorderedChildren().get( 1 ) instanceof SimpleNode );
    Assert.assertEquals( "abc2", ( (SimpleNode) collection.getUnorderedChildren().get( 1 ) ).getValue() );
}