Timothy Baldridge wrote:
This is a good example of a DSL, and it falls under the criticisms I
level at most DSLs, mainly they aren't Clojure. If we dive into
I note that Midje once had an intermediate “semi-sweet” functional
interface that the `fact` macro expanded into. (It was most similar to
Expectations’.) That’s because I was originally thinking the syntax was
a little extreme and people would prefer something Lispy or to invent
their own.
At some point, the extra level of translation got annoying, so I asked
on the mailing list if anyone objected to my deleting it. No one did.
So there is some user demand for a DSL.
And I think there’s probably a reason why /The Joy of Clojure/ and other
books write examples in a left-right format like:
(if true :truthy :falsey) ;=> :truthy
… rather than:
(is (= :truthy (if true :truthy :falsey)))
I broadly agree with the idea of avoiding complex macros as DSLs. But
testing - like textbooks - is a domain where understandability by
someone new to an API is really important. So it’s a place where user
experience might trump general principles.
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