debian/README.test

+Notes on how this package can be tested.
+────────────────────────────────────────
+
+This package can be tested by running the provided test:
+
+    sh run-unit-test
+
+in order to confirm its integrity

debian/tests/control

+Tests: run-unit-test 
+Depends: libc6,
+        libsprng2
+Recommends: tree-puzzle-doc
+Suggests: phylip,
+        treetool
+Restritions: allow-stderr
\ No newline at end of file

debian/tests/run-unit-test

+#!/bin/bash
+set -e
+
+pkg=tree-puzzle
+
+if [ "${AUTOPKGTEST_TMP}" = "" ] ; then
+    AUTOPKGTEST_TMP=$(mktemp -d /tmp/${pkg}-test.XXXXXX)
+    # Double quote below to expand the temporary directory variable now versus
+    # later is on purpose.
+    # shellcheck disable=SC2064
+    trap "rm -rf ${AUTOPKGTEST_TMP}" 0 INT QUIT ABRT PIPE TERM
+fi
+
+cp -a /usr/share/doc/${pkg}/examples/* "${AUTOPKGTEST_TMP}"
+
+cd "${AUTOPKGTEST_TMP}"
+
+#do_stuff_to_test_package#
+
+# tree-puzzle intallation check
+if hash puzzle 2>/dev/null; then
+    echo Success
+else
+    echo Fail
+fi