test_stripe: Convert NamedTuple to dataclass.

The locally defined NamedTuple was triggering a mypy caching bug
(python/mypy#10913), and we don’t use the
tuple behavior anyway.

Signed-off-by: Anders Kaseorg <[email protected]>

Author: andersk

corporate/tests/test_stripe.py

@@ -1,3 +1,4 @@
+from dataclasses import dataclass
 import json
 import operator
 import os
@@ -13,7 +14,6 @@
     Dict,
     List,
     Mapping,
-    NamedTuple,
     Optional,
     Sequence,
     Tuple,
@@ -2834,7 +2834,8 @@ def create_realm(
                 invoices = self.create_invoices(customer, num_invoices)
             return realm, customer, plan, invoices
 
-        class Row(NamedTuple):
+        @dataclass
+        class Row:
             realm: Realm
             expected_plan_type: int
             plan: Optional[CustomerPlan]