% Testing the `cflp` Package
% Sebastian Fischer (firstname.lastname@example.org)
This module defines auxiliary functions for the test suite.
> module CFLP.Tests where
> import CFLP
> import CFLP.Strategies
> import Test.HUnit
We use HUnit for testing because we need to test IO actions and want
to use errors when testing laziness.
> assertResults :: (Generic a, Show a, Eq a)
> => Computation a -> [a] -> Assertion
> assertResults = assertResultsLimit Nothing
> assertResultsN :: (Generic a, Show a, Eq a)
> => Int -> Computation a -> [a] -> Assertion
> assertResultsN = assertResultsLimit . Just
> assertResultsLimit :: (Generic a, Show a, Eq a)
> => Maybe Int -> Computation a -> [a] -> Assertion
> assertResultsLimit limit op expected = do
> actual <- eval (limDFS ()) op
> maybe id take limit actual @?= expected
We provide auxiliary assertions `assertResults...` that compute (a
possibly limited number of) non-deterministic results of a functional
logic computation in depth-first order and compare them with a list of
given expected results.