Doesn't work?
Should work:
[TestMethod]
public void RefetchSS()
{
// fetch the categories
CategoryCollection categories = new CategoryCollection();
categories.GetMulti(null);
Assert.AreEqual(4, categories.Count);
// add a new one
CategoryEntity newCategory = new CategoryEntity();
newCategory.Name = "New category";
newCategory.Save();
// refetch
categories.GetMulti(null);
Assert.AreEqual(5, categories.Count);
}
If doesn't work please post the code snippet you are using.