[Python-checkins] bpo-44949: Fix test_readline auto history tests (#27813)

[ambv]

https://github.com/python/cpython/commit/6fb62b42f4db56ed5efe0ca4c1059049276c1083
commit: 6fb62b42f4db56ed5efe0ca4c1059049276c1083
branch: main
author: Victor Stinner <vstinner at python.org>
committer: ambv <lukasz at langa.pl>
date: 2021-08-18T19:38:54+02:00
summary:

bpo-44949: Fix test_readline auto history tests (#27813)

files:
A Misc/NEWS.d/next/Tests/2021-08-18-18-30-12.bpo-44949.VE5ENv.rst
M Lib/test/test_readline.py

diff --git a/Lib/test/test_readline.py b/Lib/test/test_readline.py
index f3e404da6f0b8..e8fb8d2f9cc60 100644
--- a/Lib/test/test_readline.py
+++ b/Lib/test/test_readline.py
@@ -156,11 +156,15 @@ def test_init(self):
 
     def test_auto_history_enabled(self):
         output = run_pty(self.auto_history_script.format(True))
-        self.assertIn(b"History length: 1\r\n", output)
+        # bpo-44949: Sometimes, the newline character is not written at the
+        # end, so don't expect it in the output.
+        self.assertIn(b"History length: 1", output)
 
     def test_auto_history_disabled(self):
         output = run_pty(self.auto_history_script.format(False))
-        self.assertIn(b"History length: 0\r\n", output)
+        # bpo-44949: Sometimes, the newline character is not written at the
+        # end, so don't expect it in the output.
+        self.assertIn(b"History length: 0", output)
 
     def test_nonascii(self):
         loc = locale.setlocale(locale.LC_CTYPE, None)
diff --git a/Misc/NEWS.d/next/Tests/2021-08-18-18-30-12.bpo-44949.VE5ENv.rst b/Misc/NEWS.d/next/Tests/2021-08-18-18-30-12.bpo-44949.VE5ENv.rst
new file mode 100644
index 0000000000000..7fdf1810b165e
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2021-08-18-18-30-12.bpo-44949.VE5ENv.rst
@@ -0,0 +1,2 @@
+Fix auto history tests of test_readline: sometimes, the newline character is
+not written at the end, so don't expect it in the output.