Migrate Templates interface patterns

tests/test_interface_documentation_contract.py

@@ -0,0 +1,37 @@
+from __future__ import annotations
+
+import unittest
+
+from govoplan_templates.backend.manifest import manifest
+
+
+class TemplatesInterfaceDocumentationContractTests(unittest.TestCase):
+    def test_route_and_surfaces_remain_declared(self) -> None:
+        frontend = manifest.frontend
+        self.assertIsNotNone(frontend)
+        self.assertEqual({"/templates"}, {item.path for item in frontend.routes})  # type: ignore[union-attr]
+        self.assertEqual(
+            {
+                "templates.page",
+                "templates.library",
+                "templates.editor",
+                "templates.preview",
+            },
+            {item.id for item in frontend.view_surfaces},  # type: ignore[union-attr]
+        )
+
+    def test_help_and_consequence_metadata_remain_published(self) -> None:
+        topics = {topic.id: topic for topic in manifest.documentation}
+        library = topics["templates.library"]
+        output = topics["templates.printable-output"]
+        reference = topics["templates.reference.fields-and-consequences"]
+
+        self.assertIn("templates.state.read-only", library.metadata["help_contexts"])
+        self.assertIn("templates.action.render-final", output.metadata["help_contexts"])
+        self.assertIn("templates.field.usages", reference.metadata["help_contexts"])
+        self.assertIn("publish_revision", reference.metadata["consequence_classes"])
+        self.assertIn("delete_template", reference.metadata["consequence_classes"])
+
+
+if __name__ == "__main__":
+    unittest.main()