DNM: Test dataclasses.field assignments in stubs

Author: cdce8p

stdlib/pstats.pyi

@@ -43,17 +43,17 @@ else:
         TIME = "time"
 
 if sys.version_info >= (3, 9):
-    from dataclasses import dataclass
+    from dataclasses import dataclass, field
 
     @dataclass(unsafe_hash=True)
     class FunctionProfile:
         ncalls: str
         tottime: float
         percall_tottime: float
         cumtime: float
-        percall_cumtime: float
-        file_name: str
-        line_number: int
+        percall_cumtime: float = field(default=2)
+        file_name: str = field(default_factory=str)
+        line_number: int = field(kw_only=True)
 
     @dataclass(unsafe_hash=True)
     class StatsProfile: