The following is the list of collection assertions that enable you to verify the contents of collections:
AllItemsAreInstancesOfType—Verifies that all items in a collection are, or inherit from, a specified type.
AllItemsAreNotNull—Verifies that no item in the collection is null.
AllItemsAreUnique—Verifies that a collection is a set; each item occurs only once.
AreEqual and AreNotEqual—Verifies ...