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| author | Ludovic Courtès <ludo@gnu.org> | 2013-10-02 21:58:19 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2013-10-03 23:12:20 +0200 |
| commit | aeb7ec5c9a67c9936b5d01d6e933cf4c282058d2 (patch) | |
| tree | 6fc9c9260879b5a359ff5f63668ff3db204c89fb /tests/monads.scm | |
| parent | d9f0a23704a038640329fae6e2273e5813cdb8ab (diff) | |
| download | guix-aeb7ec5c9a67c9936b5d01d6e933cf4c282058d2.tar.gz | |
monads: Allow resolution of a monad's bind/return at expansion time.
* guix/monads.scm (<monad>): Turn in a raw SRFI-9 record type.
(define-monad): New macro.
(with-monad): Add a case for when MONAD is a macro.
(identity-return, identity-bind, store-return, store-bind): Inline.
(%identity-monad, %store-monad): Use 'define-monad'.
* tests/monads.scm ("monad?"): New test.
Diffstat (limited to 'tests/monads.scm')
| -rw-r--r-- | tests/monads.scm | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tests/monads.scm b/tests/monads.scm index 9570c208b2..4608deec9e 100644 --- a/tests/monads.scm +++ b/tests/monads.scm @@ -48,6 +48,11 @@ (test-begin "monads") +(test-assert "monad?" + (and (every monad? %monads) + (every (compose procedure? monad-bind) %monads) + (every (compose procedure? monad-return) %monads))) + ;; The 3 "monad laws": <http://www.haskell.org/haskellwiki/Monad_laws>. (test-assert "left identity" |