code for 100% coverage of QuestionSetObjectFactory (#216)
code for 100% coverage of QuestionSetObjectFactory (#216)

* added tests for 100% coverage for QuestionSetObjectFactory

* code for 100% coverage of QuestionSetObjectFactory

* change variable names to be more descriptive

BenjaminHolland/tie,BenjaminHolland/tie,google/tie,google/tie,google/tie,BenjaminHolland/tie