Changed RE parsing added JSON parsing for Curl upload output

fixes nspcc-dev/neofs-testlib#83

Signed-off-by: Maksim Gelbakhiani <[email protected]>

robot/resources/lib/python_keywords/http_gate.py

@@ -1,4 +1,5 @@
 import base64
+import json
 import logging
 import os
 import random
@@ -240,11 +241,19 @@ def upload_via_http_gate_curl(
         assert match, f"Expected {output} to match {error_pattern}"
         return ""
 
-    oid_re = re.search(r'"object_id": "(.*)"', output)
-    if not oid_re:
-        raise AssertionError(f'Could not find "object_id" in {output}')
-    return oid_re.group(1)
+    json_match = re.search(r'{.*}', output, re.DOTALL | re.MULTILINE)
+    if not json_match:
+        raise AssertionError(f'Could not find JSON in {output}')
+
+    json_str = json_match.group(0)
 
+    try:
+        response_json = json.loads(json_str)
+    except json.JSONDecodeError:
+        raise AssertionError(f'Invalid JSON response: {json_str}')
+    if 'object_id' not in response_json:
+        raise AssertionError(f'Could not find "object_id" in JSON response: {json_str}')
+    return response_json['object_id']
 
 @allure.step("Get via HTTP Gate using Curl")
 def get_via_http_curl(cid: str, oid: str, endpoint: str) -> str: