added test-cases for class OObjectEnumLazyList.class

test-cases for:

contains()
indexOf()
lastIndexOf()
fixed problem with the methods contains,indexOf and lastIndexOf in class
OObjectEnumLazyList.

The used list in these methods can contains null-values which leads to
incorrect results. Instead we use the list with the serialized enum
names, which are the values in the datasbase himself.