store: Add 'store-lower'.

* guix/store.scm (store-lower): New procedure.
* tests/store.scm ("store-lower"): New test.

1 files changed, 7 insertions, 1 deletions

diff --git a/tests/store.scm b/tests/store.scm
index cb5370d5cc..f43fcb14d0 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -595,6 +595,12 @@ Deriver: ~a~%"
            (null? (valid-derivers %store file))
            (null? (referrers %store file))))))
 
+(test-equal "store-lower"
+  "Lowered."
+  (let* ((add  (store-lower text-file))
+         (file (add %store "foo" "Lowered.")))
+    (call-with-input-file file get-string-all)))
+
 (test-end "store")