bpo-45059: Add module cleanup to IDLE test_macosx (GH-28102)

(cherry picked from commit 22fe0eb13c3441b71b60aaea0e7fe289a29783da)

Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>

diff --git a/Lib/idlelib/idle_test/test_macosx.py b/Lib/idlelib/idle_test/test_macosx.py
index 1932477358689639281f1866b78713e30d75942e..86da8849e5ca00f55affd806b4b89e74f55fdcb5 100644 (file)
--- a/Lib/idlelib/idle_test/test_macosx.py
+++ b/Lib/idlelib/idle_test/test_macosx.py
@@ -12,6 +12,15 @@ nontypes = {'other'}
 alltypes = mactypes | nontypes
 
 
+def setUpModule():
+    global orig_tktype
+    orig_tktype = macosx._tk_type
+
+
+def tearDownModule():
+    macosx._tk_type = orig_tktype
+
+
 class InitTktypeTest(unittest.TestCase):
     "Test _init_tk_type."