Assessment

I'm wondering how I'm to plan my assessment items for CLN 618. If I'm to assess speaking what are the components of speaking I'm going to test? Surely writing would be much easier to test. Yet, in MY context, I think learing to test speaking will be the most useful. Reading "Assessing Speaking" by Sari Luoma has been useful but I need to look at some test models and ask myself some questions such as why am I testing these students? What are their needs? My conclusion is, designing this test is definitely worse than sitting for one!