diff --git a/tests/run.sh b/tests/run.sh
new file mode 100755
index 0000000..6b51948
--- /dev/null
+++ b/tests/run.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+echo
+echo "INFO: TOX CONFIGURATION"
+echo
+
+tox --showconfig
+
+echo
+echo "INFO: EXTENSIONS DISABLED"
+echo
+
+WRAPT_EXTENSIONS=false tox
+
+STATUS=$?
+if test "$STATUS" != "0"
+then
+    echo
+    echo "`basename $0` (extensions disabled): *** Error $STATUS"
+    exit 1
+fi
+
+echo
+echo "INFO: EXTENSIONS ENABLED"
+echo
+
+WRAPT_EXTENSIONS=true tox
+
+STATUS=$?
+if test "$STATUS" != "0"
+then
+    echo
+    echo "`basename $0` (extensions enabled): *** Error $STATUS"
+    exit 1
+fi