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diff --git a/tests/job-specifier.scm b/tests/job-specifier.scm
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+;;;; job-specifier.scm -- tests for (mcron job-specifier) module
+;;; Copyright © 2016 Mathieu Lirzin <mthl@gnu.org>
+;;;
+;;; This file is part of GNU Mcron.
+;;;
+;;; GNU Mcron 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 Mcron 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 Mcron.  If not, see <http://www.gnu.org/licenses/>.
+
+(use-modules (srfi srfi-64)
+             (mcron job-specifier))
+
+(test-begin "job-specifier")
+
+(test-equal "range: basic"
+  '(0 1 2 3 4 5 6 7 8 9)
+  (range 0 10))
+
+(test-equal "range: positive step"
+  '(0 2 4 6 8)
+  (range 0 10 2))
+
+(test-assert "range: zero step"
+  ;; Since this behavior is undefined, only check if range doesn't crash.
+  (range 0 5 0))
+
+(test-assert "range: negative step"
+  ;; Since this behavior is undefined, only check if range doesn't crash.
+  (range 0 5 -2))
+
+(test-assert "range: reverse boundaries"
+  (range 10 3))
+
+(test-end)