Ensure pipeline yaml files are valid YAML and can be rendered with JSON-e

Part of #613

tests/test_pipelines.py

@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+
+import jsone
+import pytest
+import yaml
+
+
+@pytest.mark.parametrize(
+    "pipeline_file",
+    (
+        os.path.realpath(os.path.join("infra", f))
+        for f in os.listdir("infra")
+        if f.endswith(".yml")
+    ),
+)
+def test_jsone_validates(pipeline_file):
+    with open(pipeline_file, "r") as f:
+        yaml_content = yaml.safe_load(f.read())
+
+    jsone.render(yaml_content, context={"version": "42.0"})