diff --git a/runtests.sh b/runtests.sh
new file mode 100755
index 0000000..dabf112
--- /dev/null
+++ b/runtests.sh
@@ -0,0 +1,21 @@
+#/bin/bash
+#
+# Run all the tests.
+#
+# The python interpreter to use is passed in on the command line.
+
+$1 runtests.py tests/test_discovery.py
+$1 runtests.py tests/test_errors.py
+$1 runtests.py tests/test_http.py
+$1 runtests.py tests/test_json_model.py
+$1 runtests.py tests/test_mocks.py
+$1 runtests.py tests/test_model.py
+$1 runtests.py tests/test_oauth2client_clientsecrets.py
+$1 runtests.py tests/test_oauth2client_django_orm.py
+$1 runtests.py tests/test_oauth2client_file.py
+$1 runtests.py tests/test_oauth2client_jwt.py
+$1 runtests.py tests/test_oauth2client.py
+$1 runtests.py tests/test_oauth.py
+$1 runtests.py tests/test_protobuf_model.py
+$1 runtests.py tests/test_schema.py
+$1 runtests.py tests/test_oauth2client_appengine.py