From: Victor Stinner <vstinner@python.org>
Date: Tue, 19 May 2026 14:09:03 +0000 (+0200)
Subject: gh-149879: Fix test_tempfile on Cygwin (#150081)
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6372d48a4d5c394a6638741d0c3c849a20161efb;p=thirdparty%2FPython%2Fcpython.git

gh-149879: Fix test_tempfile on Cygwin (#150081)

On Cygwin, text files are not truncated at the first Ctrl+Z byte.
---

diff --git a/Lib/test/test_tempfile.py b/Lib/test/test_tempfile.py
index b2b5390af33b..0e00ff1d0cc3 100644
--- a/Lib/test/test_tempfile.py
+++ b/Lib/test/test_tempfile.py
@@ -511,6 +511,8 @@ class TestMkstempInner(TestBadTempdir, BaseTestCase):
         self.assertFalse(retval > 0, "child process reports failure %d"%retval)
 
     @unittest.skipUnless(has_textmode, "text mode not available")
+    @unittest.skipIf(sys.platform == "cygwin",
+                     "truncate text mode is not supported on Cygwin")
     def test_textmode(self):
         # _mkstemp_inner can create files in text mode