Jay: Here's a gist: https://gist.github.com/lojic/db7016fb95b1c05e4ade
without.rkt is how I coded it up and with.rkt is how I'd like to be able to code it. I agree that it's trivial to add, but for something as common as "setup" and "teardown" for unit testing, there may be an advantage to having it in RackUnit. When it comes down to it, test-case, check-equal, etc. aren't hard to add either, but why should we all implement those. Brian On Tuesday, March 8, 2016 at 12:49:21 PM UTC-5, Jay McCarthy wrote: > Hi Brian, > > > Can you explain what you want to write? Just imagine that the feature was > already there... what do you want? > > > I think of Rackunit as a way of writing checks, so if I wanted to do what > you're talking about, then I'd define the macro/function that you don't want > to. In other words, with Rackunit, you are just writing a program and it > provides a way to keep track of and print out individual tests, so all the > features of Racket are there for writing that program. There's no reason to > add functions, dynamic-wind, and begin blocks to Rackunit, because they're > already in Racket. For instance, my tests look like > > > (define f ....) > (module+ test > (check-equal? (f ....) ....) > (check-equal? (f ....) ....) > (check-equal? (f ....) ....)) > > > > and sometimes > > > (define (f ....) > (module+ test > (define (test-f-like-woah ....) > .... (check-equal? (f ....) ....) ....) > (test-f-like-woah ....) > (test-f-like-woah ....)) > > > > If I had already done the second kind, then I'd put setup in there. > > > Given that Rackunit doesn't already have an "outer" paren, each check really > is atomic, so any setup would be environmental, like wrapping in a > dynamic-wind/parameterize or just another function call before the > check-equal?. > > > Now, if you REALLY want this, and I don't feel that you should, you could > look at current-check-around and do something like: > > > (let ([old (current-check-around)]) > (parameterize ([current-check-around (lambda (c) (before!) (old c) > (after!))]) > (check-equal? ....) > (check-equal? ....) > > (check-equal? ....))) > > > > This would run (before!) 3 times and (after!) 3 times. > > > Jay > > > > > On Tue, Mar 8, 2016 at 12:23 PM, Brian Adkins <lojic...@gmail.com> wrote: > Does RackUnit provide a facility similar to the setup & teardown functions of > other unit testing frameworks? In other words, I'd like to execute some code > before each test w/o coding each test to call a setup function or having to > create my own macro given how common this is. > > > > As far as I can tell, neither the #:before of test-suite nor the before macro > accomplish this. In fact, I haven't been able to discern the purpose of the > before macro because the following seem equivalent to me: > > > > (before > > before-expr > > expr1 > > expr2) > > > > before-expr > > expr1 > > expr2 > > > > At least with the after macro, there is a guarantee that the after-expr will > be evaluated in the face of exceptions. > > > > Also, as I mentioned in IRC, I just discovered that the setup function in > Elixir (the love child of Erlang and Ruby :) returns an expression that each > test accepts as input. This is more functional than the traditional approach > of the setup function mutating a variable that the test cases access and > allows the tests to run concurrently in the same file. Might be worth adding > to a wishlist for future versions of RackUnit. > > > > Thanks, > > Brian > > > > -- > > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users...@googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > Jay McCarthy > Associate Professor > PLT @ CS @ UMass Lowell > http://jeapostrophe.github.io > > "Wherefore, be not weary in well-doing, > for ye are laying the foundation of a great work. > And out of small things proceedeth that which is great." > - D&C 64:33 -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
