Tweak group owner test retry

tests/app/v1/routers/test_groups.py

@@ -224,7 +224,9 @@ def test_owner_not_member(auth_headers, client, group_molds, group_owner_not_mem
         group.reload_without_clean()
         return group.owner in group.members
 
-    assert check_with_retry(condition)
+    assert check_with_retry(condition, retries=10, delay0=0.2), (
+        'group in db not updated within expected time'
+    )
 
 
 @pytest.mark.parametrize(

tests/utils.py

@@ -206,9 +206,10 @@ def dict_to_params(d):
 
 
 def check_with_retry(condition_func, retries=5, delay0=0.1):
+    """Call function, return early on truthy result. Retry with increasing delays."""
     for attempt in range(retries):
-        if condition_func():
-            return True
+        if result := condition_func():
+            return result
 
         time.sleep(delay0 * (attempt + 1))