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diff --git a/test/lisp/net/dig-tests.el b/test/lisp/net/dig-tests.el
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+;;; dig-tests.el --- Tests for dig.el  -*- lexical-binding:t -*-
+
+;; Copyright (C) 2020 Free Software Foundation, Inc.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 Emacs 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 Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'ert)
+(require 'dig)
+
+(defvar dig-test-result-data "
+; <<>> DiG 9.11.16-2-Debian <<>> gnu.org
+;; global options: +cmd
+;; Got answer:
+;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 7777
+;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
+
+;; OPT PSEUDOSECTION:
+; EDNS: version: 0, flags:; udp: 4096
+;; QUESTION SECTION:
+;gnu.org.                       IN      A
+
+;; ANSWER SECTION:
+gnu.org.                300     IN      A       111.11.111.111
+
+;; Query time: 127 msec
+;; SERVER: 192.168.0.1#53(192.168.0.1)
+;; WHEN: Sun Apr 26 00:47:55 CEST 2020
+;; MSG SIZE  rcvd: 52
+
+" "Data used to test dig.el.")
+
+(ert-deftest dig-test-dig-extract-rr ()
+  (with-temp-buffer
+    (insert dig-test-result-data)
+    (should (equal (dig-extract-rr "gnu.org")
+                   "gnu.org.            300     IN      A       111.11.111.111"))))
+
+(provide 'dig-tests)
+;;; dig-tests.el ends here