I've noticed around the place a few hints at testing capabilities such
as
(test v)
and contrib having a run tests, but I'm at a bit of a loss as to how
it fits together. If there is a good example I can take a look at
please point me toward it.
Generally what I've been doing is writting a test case at the bottom
of my function and commenting it out when I see the correct output.
But if there is a more formal definition I'd prefer to use that.
(defn poly-expand [points]
(loop [aa (first points) remaining (rest points) built (empty
points)]
(if (empty? remaining)
(concat built [aa (first points)])
(recur (first remaining) (rest remaining) (concat built [aa
(first remaining)])))))
;(pr (poly-expand '(a b c d)))
; -> (a b b c c d d a) ie: lines of polygon connected
I imagine what I should be doing is somehow attaching a :test metadata
which checks that a given input equates to a given output, I just need
an example to follow. Coming from an imperitive background, I have to
say that unit testing seems to be one of the stand out advantages to
the functional approach. I can't even begin to imagine how to
represent test cases for the C/C++ projects I've worked on hahahahaha,
but it just feels like a natural part of the development cycle in
clojure which is really great.
Regards,
Tim.
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