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+;;;; redirect.scm -- tests for (mcron redirect) module
+;;; Copyright © 2020 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 (ice-9 textual-ports)
+             (srfi srfi-1)
+             (srfi srfi-64)
+             (mcron redirect))
+
+(setenv "TZ" "UTC0")
+
+(test-begin "redirect")
+
+(define out (mkstemp! (string-copy "foo-XXXXXX")))
+
+(dynamic-wind
+  (const #t)
+  (lambda ()
+    (with-mail-out "echo 'foo'" "user0"
+                   #:out (lambda () out)
+                   #:hostname "localhost")
+
+    (flush-all-ports)
+
+    (test-equal "mail output"
+      "To: user0
+From: mcron
+Subject: user0@localhost
+
+foo
+"
+      (call-with-input-file (port-filename out) get-string-all)))
+
+  (lambda ()
+    (let ((fname (port-filename out)))
+      (close out)
+      (delete-file fname))))
+
+(test-end)