Automagically test every test in the test directory.

test.sh

@@ -1,8 +1,17 @@
 #! /bin/sh
 
+# This file is meant to be run from the Plinth root directory:
+#
+# $ cd plinth/
+# $ ./test.sh
+
 PYTHONPATH=modules/installed/lib:$PYTHONPATH
 PYTHONPATH=vendor:$PYTHONPATH
-
+PYTHONPATH=.:$PYTHONPATH
 export PYTHONPATH
 
-python tests/test_user_store.py
+for file in tests/*.py
+do
+    echo "Testing ${file}:"
+    python $file
+done