Simplify JSON-ification of VersionedAttributes.

[plomtask] / tests / utils.py

diff --git a/tests/utils.py b/tests/utils.py
index 15a53ae0ddc0b78835b5baacea15f43d3a81cba0..d6c5b20ac7882281d4958e99e3dbcd6a35de708b 100644 (file)
--- a/tests/utils.py
+++ b/tests/utils.py
@@ -2,6 +2,7 @@
 from unittest import TestCase
 from threading import Thread
 from http.client import HTTPConnection
+from json import loads as json_loads
 from urllib.parse import urlencode
 from uuid import uuid4
 from os import remove as remove_file
@@ -268,3 +269,31 @@ class TestCaseWithServer(TestCaseWithDB):
         self.check_post(form_data, f'/process?id={id_}', 302,
                         f'/process?id={id_}')
         return form_data
+
+    def check_json_get(self, path: str, expected: dict[str, object]) -> None:
+        """Compare JSON on GET path with expected.
+
+        To simplify comparison of VersionedAttribute histories, transforms
+        timestamp keys of VersionedAttribute history keys into integers
+        counting chronologically forward from 0.
+        """
+        def rewrite_history_keys_in(item: Any) -> Any:
+            if isinstance(item, dict):
+                if '_versioned' in item.keys():
+                    for k in item['_versioned']:
+                        vals = item['_versioned'][k].values()
+                        history = {}
+                        for i, val in enumerate(vals):
+                            history[i] = val
+                        item['_versioned'][k] = history
+                for k in list(item.keys()):
+                    rewrite_history_keys_in(item[k])
+            elif isinstance(item, list):
+                item[:] = [rewrite_history_keys_in(i) for i in item]
+            return item
+        self.conn.request('GET', path)
+        response = self.conn.getresponse()
+        self.assertEqual(response.status, 200)
+        retrieved = json_loads(response.read().decode())
+        rewrite_history_keys_in(retrieved)
+        self.assertEqual(expected, retrieved)