Typos

Fixed some typos
Also log if file does not load

loadTextFileAsynchronous() : Also log if file does not load
First implementation of vec2 constructor tests

First implementation of vec2 constructor tests
Typos
Working version
Added validation of test cases

Added validation on the used test case pattern by comparing the count of
test cases with the direct computed test case count.
Correct iterating through test expressions
Changed generation of argument list