bpo-31629: Add support.SaveSignals (#4183)

test_curses now saves/restores signals. On FreeBSD, the curses module
sets handlers of some signals, but don't restore old handlers when
the module is deinitialized.

1 files changed, 4 insertions, 1 deletions

diff --git a/Lib/test/test_curses.py b/Lib/test/test_curses.py
index 0d0b160d764..b0a28908da7 100644
--- a/Lib/test/test_curses.py
+++ b/Lib/test/test_curses.py
@@ -15,7 +15,7 @@ import sys
 import tempfile
 import unittest
 
-from test.support import requires, import_module, verbose
+from test.support import requires, import_module, verbose, SaveSignals
 
 # Optionally test curses module.  This currently requires that the
 # 'curses' resource be given on the regrtest command line using the -u
@@ -63,6 +63,8 @@ class TestCurses(unittest.TestCase):
             del cls.tmp
 
     def setUp(self):
+        self.save_signals = SaveSignals()
+        self.save_signals.save()
         if verbose:
             # just to make the test output a little more readable
             print()
@@ -72,6 +74,7 @@ class TestCurses(unittest.TestCase):
     def tearDown(self):
         curses.resetty()
         curses.endwin()
+        self.save_signals.restore()
 
     def test_window_funcs(self):
         "Test the methods of windows"