closes bpo-34594: Don't hardcode errno values in the tests. (GH-9076)

Author: ZackerySpytz

Lib/test/test_spwd.py

@@ -67,8 +67,6 @@ def test_getspnam_exception(self):
  spwd.getspnam(name)
  except KeyError as exc:
  self.skipTest("spwd entry %r doesn't exist: %s" % (name, exc))
- else:
- self.assertEqual(str(cm.exception), '[Errno 13] Permission denied')
 
 
 if __name__ == "__main__":

Lib/test/test_tabnanny.py

@@ -5,6 +5,7 @@
 """
 from unittest import TestCase, mock
 from unittest import mock
+import errno
 import tabnanny
 import tokenize
 import tempfile
@@ -232,7 +233,8 @@ def test_when_nannynag_error(self):
  def test_when_no_file(self):
  """A python file which does not exist actually in system."""
  path = 'no_file.py'
- err = f"{path!r}: I/O Error: [Errno 2] No such file or directory: {path!r}\n"
+ err = f"{path!r}: I/O Error: [Errno {errno.ENOENT}] " \
+ f"No such file or directory: {path!r}\n"
  self.verify_tabnanny_check(path, err=err)
 
  def test_errored_directory(self):

Misc/NEWS.d/next/Tests/2018-09-05-23-50-21.bpo-34594.tqL-GS.rst

@@ -0,0 +1 @@
+Fix usage of hardcoded ``errno`` values in the tests.