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| author | Ludovic Courtès <ludo@gnu.org> | 2014-10-08 23:35:08 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2014-10-08 23:35:20 +0200 |
| commit | 405a9d4ec9806993a6453f0dfba78fc65d5e7993 (patch) | |
| tree | 83096b186be61f0a0daca3b808ab2aeb58bfb352 /tests/monads.scm | |
| parent | 2e1bafb03438757c7cc34c16230b00623507ff84 (diff) | |
| download | patches-405a9d4ec9806993a6453f0dfba78fc65d5e7993.tar patches-405a9d4ec9806993a6453f0dfba78fc65d5e7993.tar.gz | |
monads: Add 'mbegin'.
* guix/monads.scm (mbegin): New macro.
* tests/monads.scm ("mbegin"): New test.
* doc/guix.texi (The Store Monad): Document it.
Diffstat (limited to 'tests/monads.scm')
| -rw-r--r-- | tests/monads.scm | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/tests/monads.scm b/tests/monads.scm index 5514c8386c..6e3dd00f72 100644 --- a/tests/monads.scm +++ b/tests/monads.scm @@ -32,7 +32,7 @@ #:use-module (srfi srfi-26) #:use-module (srfi srfi-64)) -;; Test the (guix store) module. +;; Test the (guix monads) module. (define %store (open-connection-for-tests)) @@ -99,6 +99,21 @@ %monads %monad-run)) +(test-assert "mbegin" + (every (lambda (monad run) + (with-monad monad + (let* ((been-there? #f) + (number (mbegin monad + (return 1) + (begin + (set! been-there? #t) + (return 2)) + (return 3)))) + (and (= (run number) 3) + been-there?)))) + %monads + %monad-run)) + (test-assert "mlet* + text-file + package-file" (run-with-store %store (mlet* %store-monad ((guile (package-file %bootstrap-guile "bin/guile")) |