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diff --git a/tests/scripts.scm b/tests/scripts.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2015 Ludovic Courtès <ludo@gnu.org>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (test-scripts)
+  #:use-module (guix scripts)
+  #:use-module ((guix scripts build)
+                #:select (%standard-build-options))
+  #:use-module (srfi srfi-64))
+
+;; Test the (guix scripts) module.
+
+(define-syntax-rule (with-environment-variable variable value body ...)
+  "Run BODY with VARIABLE set to VALUE."
+  (let ((orig (getenv variable)))
+    (dynamic-wind
+      (lambda ()
+        (setenv variable value))
+      (lambda ()
+        body ...)
+      (lambda ()
+        (if orig
+            (setenv variable orig)
+            (unsetenv variable))))))
+
+
+(test-begin "scripts")
+
+(test-equal "parse-command-line"
+  '((argument . "bar") (argument . "foo")
+    (cores . 10)                                  ;takes precedence
+    (substitutes? . #f) (keep-failed? . #t)
+    (max-jobs . 77) (cores . 42))
+
+  (with-environment-variable "GUIX_BUILD_OPTIONS" "-c 42 -M 77"
+    (parse-command-line '("--keep-failed" "--no-substitutes"
+                          "--cores=10" "foo" "bar")
+                        %standard-build-options
+                        (list '()))))
+
+(test-equal "parse-command-line and --no options"
+  '((argument . "foo")
+    (substitutes? . #f))                          ;takes precedence
+
+  (with-environment-variable "GUIX_BUILD_OPTIONS" "--no-substitutes"
+    (parse-command-line '("foo")
+                        %standard-build-options
+                        (list '((substitutes? . #t))))))
+
+(test-end "scripts")
+
+
+(exit (= (test-runner-fail-count (test-runner-current)) 0))
+
+;;; Local Variables:
+;;; eval: (put 'with-environment-variable 'scheme-indent-function 2)
+;;; End: