Claimant developed and manufactured software which Defendant claimed joint authorship in.
Defendant had invested considerable time and effort testing the program, making sure it performed well and setting specifications.
Defendant was not a joint author
This because Defendant had expended wrong type of skill and labour in testing program
Expenditure of time, skill and effort in testing a program is analogous to that of a proofreader
Thus is NOT the sort of skill required to be an author of a work