Add a hook for yaml files.
diff --git a/testing/util.py b/testing/util.py
new file mode 100644
index 0000000..c52a8cf
--- /dev/null
+++ b/testing/util.py
@@ -0,0 +1,9 @@
+
+import os.path
+
+
+TESTING_DIR = os.path.abspath(os.path.dirname(__file__))
+
+
+def get_resource_path(path):
+    return os.path.join(TESTING_DIR, 'resources', path)