On Feb 24, 3:11 am, "Michel S." <michel.syl...@gmail.com> wrote:
> I started Quiche after taking a look at Fact, actually; the difference
> between what I'm proposing and Fact is that the latter is a standalone
> test framework, whereas the random-testing part of Quiche (property)
> and Fact (fact) could, IMHO, be built on top of test-is.
I originally planned to build Fact on top of test-is, but there were
other parts of test-is I wanted to change, such as how test failures
were reported, so I created a separate library.
I don't think there's much overlap between Fact and test-is, insofar
as a function to test a predicate against a sequence of values is
relatively simple to make. For test-is, I'd be tempted to create
something like this:
(deftest foo
(for-all [x random-int, y random-int]
(> (+ x y) x))
IMO, for-all is more descriptive than 'property', and fits better with
'is' as a name. However, because this uses asserts, it doesn't fit in
with Fact's predicate system.
The only complicated part of Fact is its ability to generate random
test data from regular expressions, but I've already split that out
into a library called re-rand.
- James
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