diff -Nru at-3.1.23/debian/changelog at-3.1.23/debian/changelog
--- at-3.1.23/debian/changelog	2020-09-25 16:49:04.000000000 +0530
+++ at-3.1.23/debian/changelog	2021-03-18 01:02:35.000000000 +0530
@@ -1,3 +1,11 @@
+at (3.1.23-1.2) unstable; urgency=medium
+
+  * Non-maintainer upload.
+  * d/t/{control, basic-usage}: Add DEP8 test
+    for testing basic usage of at and atq commands.
+
+ -- Utkarsh Gupta <utkarsh@debian.org>  Thu, 18 Mar 2021 01:02:35 +0530
+
 at (3.1.23-1.1) unstable; urgency=medium
 
   * Non-maintainer upload.
diff -Nru at-3.1.23/debian/tests/basic-usage at-3.1.23/debian/tests/basic-usage
--- at-3.1.23/debian/tests/basic-usage	1970-01-01 05:30:00.000000000 +0530
+++ at-3.1.23/debian/tests/basic-usage	2021-03-18 01:02:35.000000000 +0530
@@ -0,0 +1,61 @@
+#!/bin/bash
+
+#################################################
+##                                             ##
+## Basic usage of `at` to create a file and    ##
+## also take in account the queue, using atq.  ##
+##                                             ##
+## Written by:                                 ##
+## Utkarsh Gupta <utkarsh@debian.org>          ##
+## License: GPL-2+                             ##
+##                                             ##
+#################################################
+
+set -ex
+
+TMPFILE=at.$RANDOM
+WORKDIR=$(mktemp -d)
+trap "rm -rf $WORKDIR" 0 INT QUIT ABRT PIPE TERM
+
+JOBS_BEFORE=$(atq | wc -l)
+
+# use at command to schedule a job.
+echo "echo `date` > ${WORKDIR}/${TMPFILE}" | at now + 1 minute
+
+sleep 2
+
+# check if the file is created at the wrong
+# time, that is, 58 seconds earlier.
+if test -f "$TMPFILE"
+then
+  echo "$TMPFILE already exits but it really shouldn't."
+  exit 1
+else
+  echo "OK, $TMPFILE doesn't exist yet; expected.."
+fi
+
+# check atq to see the queued jobs.
+# there should be a one new job.
+JOBS_AFTER=$(atq | wc -l)
+
+if [[ $((JOBS_AFTER - JOBS_BEFORE)) -eq 1 ]]
+then
+  echo "OK, 1 new queued job exists.."
+else
+  echo "No new queued job found."
+  exit 1
+fi
+
+sleep 58
+
+# grep the content of the file to verify that
+# everything is in order.
+if grep -Fq "UTC" $WORKDIR/$TMPFILE
+then
+  echo "OK, $TMPFILE exists and everything looks in order.."
+else
+  echo "Either $TMPFILE doesn't exist or the content differs."
+  exit 1
+fi
+
+echo "OK; PASS."
diff -Nru at-3.1.23/debian/tests/control at-3.1.23/debian/tests/control
--- at-3.1.23/debian/tests/control	1970-01-01 05:30:00.000000000 +0530
+++ at-3.1.23/debian/tests/control	2021-03-18 01:02:35.000000000 +0530
@@ -0,0 +1,3 @@
+Tests: basic-usage
+Depends: @
+Restrictions: allow-stderr, isolation-container