Correct Issue#1561: test_mailbox failed on Windows.
Open all text files with newline='', this is the only way to have consistent offsets.
diff --git a/Lib/test/test_mailbox.py b/Lib/test/test_mailbox.py
index 8f4b486..ca87229 100644
--- a/Lib/test/test_mailbox.py
+++ b/Lib/test/test_mailbox.py
@@ -410,8 +410,7 @@
_sample_message, io.StringIO(_sample_message)):
output = io.StringIO()
self._box._dump_message(input, output)
- self.assertEqual(output.getvalue(),
- _sample_message.replace('\n', os.linesep))
+ self.assertEqual(output.getvalue(), _sample_message)
output = io.StringIO()
self.assertRaises(TypeError,
lambda: self._box._dump_message(None, output))
@@ -757,7 +756,7 @@
self._box._file.seek(0)
contents = self._box._file.read()
self._box.close()
- self.assertEqual(contents, open(self._path, 'r').read())
+ self.assertEqual(contents, open(self._path, 'r', newline='').read())
self._box = self._factory(self._path)
def test_lock_conflict(self):