We need tests which test:

• HashMap
• TreeMap
• LinkedHashMap
• IdentityHashMap
• Hashtable

• LinkedList
• ArrayList

• HashSet
• LinkedHashSet
• TreeSet

The above need to be tested when empty, small (1, ~80, and 256 elements), medium (257, ~8000, and 65536 elements), and large (65537 elements and up).

• Collections.singletonList/Set/Map
• Collections.emptyList/Set/Map

Need to test shared and unshared variants. Maybe SimpleMarshallerTests is the best place?