--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/run-tests.sh	Wed Aug 07 11:28:07 2019 +0200
@@ -0,0 +1,72 @@
+#!/bin/sh
+#
+# Copyright (C) 2019 Guido Berhoerster <guido+pwm@berhoerster.name>
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+export PWM="${PWM:-pwm}"
+
+export LC_ALL=C
+
+l="$(locale -a | sort | grep -E '^(C|en_US)\.([uU][tT][fF]-?8)$' | head -1)"
+if [ -z "$l" ]; then
+    printf 'no suitable UTF-8 locale found\n' >&2
+    exit 1
+fi
+
+export LC_ALL="$l"
+export TESTS_PATH="$(dirname "$0")"
+export TESTS_OUTPUT_PATH="${TESTS_OUTPUT_PATH:-${TESTS_PATH}/output}"
+
+tests_passed=0
+tests_failed=0
+
+mkdir -p "${TESTS_OUTPUT_PATH}" || exit 1
+
+for t in "${TESTS_PATH}"/test-*.sh; do
+    [ -r "${t}" ] || break
+
+    export LOGFILE="${TESTS_OUTPUT_PATH}/$(basename "${t}" .sh).log"
+    export TEST_NAME="$(basename "${t}" .sh)"
+
+    [ -t 1 ] && printf "Running %s" "${t}"
+    if ${SHELL:-/bin/sh} "$t" >/dev/null 2>"${LOGFILE}"; then
+        tests_passed=$(( tests_passed + 1 ))
+        if [ -t 1 ]; then
+            printf "\rOK      "
+        else
+            printf "OK      %s" "${t}"
+        fi
+    else
+        tests_failed=$(( tests_failed + 1 ))
+        if [ -t 1 ]; then
+            printf "\rFAILED  "
+        else
+            printf "FAILED  %s" "${t}"
+        fi
+    fi
+    printf "%s\n" "${t}"
+done
+
+printf -- "-----------\npassed: %3d\nfailed: %3d\ntotal:  %3d\n" $tests_passed \
+    $tests_failed $(( tests_failed + tests_passed ))
+
+[ $tests_failed -eq 0 ]