Cleanup

Author: dandavison

tests/test_serialization_context.py

@@ -1302,16 +1302,12 @@ def assert_trace(trace: list[TraceItem], expected: list[TraceItem]):
     history: list[str] = []
     for item, expected_item in zip_longest(trace, expected):
         if item is None:
-            raise AssertionError(
-                f"Fewer items in trace than expected.\n\n History:\n{'\n'.join(history)}"
-            )
+            raise AssertionError("Fewer items in trace than expected.")
         if expected_item is None:
-            raise AssertionError(
-                f"More items in trace than expected.\n\n History:\n{'\n'.join(history)}"
-            )
+            raise AssertionError("More items in trace than expected.")
         if item != expected_item:
             raise AssertionError(
-                f"Item:\n{pformat(item)}\n\ndoes not match expected:\n\n {pformat(expected_item)}.\n\n History:\n{'\n'.join(history)}"
+                f"Item:\n{pformat(item)}\n\ndoes not match expected:\n\n {pformat(expected_item)}."
             )
         history.append(f"{item.context_type} {item.method}")