Question $1$

What needs to be present in order to write$/$think of tests for a method?

Pre$-$Conditions $($the appropriate values of the object and parameters in order for the method to run correctly$)$

Post$-$Conditions $($what the method will accomplish $-$ what it will print, return, or do to the object$/$parameters$)$

An implementation of the method $($the code for the method$)$

None of the above