public void testIt()
    {
        for (MapSchema.MessageFactory mf : MapSchema.MessageFactories.values())
        {
            Map<String, String> map = mf.newMessage();
            verify(map, "key1", "value1", "key2", "value2");
        }

        EnumMap<Gender, String> map = new EnumMap<Gender, String>(Gender.class);
        verify(map, Gender.MALE, "m", Gender.FEMALE, "f");

    }
Test for Map impls that returns non-unique entries across iterator calls.

@author David Yu
@created Oct 22, 2011
protostuff-collectionschema/src/test/java/io/protostuff/UniqueMapEntryTest.java