gh-133982: Update test_bufio to use self.open (gh-133983)

cmaloney · web-flow · commit 84d5f8d799db · 2025-05-21T16:40:50.000+02:00
diff --git a/Lib/test/test_bufio.py b/Lib/test/test_bufio.py
@@ -28,7 +28,7 @@ def try_one(self, s):
             f.write(b"\n")
             f.write(s)
             f.close()
-            f = open(os_helper.TESTFN, "rb")
+            f = self.open(os_helper.TESTFN, "rb")
             line = f.readline()
             self.assertEqual(line, s + b"\n")
             line = f.readline()
