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| author | Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com> | 2021-10-21 21:02:20 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-10-21 21:02:20 (GMT) |
| commit | 98f157de1260801fd26c72eb6bfae0d9295e5ab3 (patch) | |
| tree | 0ebf23084274621714c64a895c11517d7e2d6250 /Lib/tkinter/test | |
| parent | 828722aca4ccba893f6b2e8c1d41fd74fd6e208d (diff) | |
| download | cpython-98f157de1260801fd26c72eb6bfae0d9295e5ab3.zip cpython-98f157de1260801fd26c72eb6bfae0d9295e5ab3.tar.gz cpython-98f157de1260801fd26c72eb6bfae0d9295e5ab3.tar.bz2 | |
bpo-45160: Ttk optionmenu only set variable once (GH-28291) (GH-29131)
(cherry picked from commit add46f84769a7e6fafa50954f79b7c248231fa4e)
Co-authored-by: E-Paine <63801254+E-Paine@users.noreply.github.com>
Diffstat (limited to 'Lib/tkinter/test')
| -rw-r--r-- | Lib/tkinter/test/test_ttk/test_extensions.py | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Lib/tkinter/test/test_ttk/test_extensions.py b/Lib/tkinter/test/test_ttk/test_extensions.py index 438d21d..cddd1f2 100644 --- a/Lib/tkinter/test/test_ttk/test_extensions.py +++ b/Lib/tkinter/test/test_ttk/test_extensions.py @@ -301,6 +301,19 @@ class OptionMenuTest(AbstractTkTest, unittest.TestCase): optmenu.destroy() optmenu2.destroy() + def test_trace_variable(self): + # prior to bpo45160, tracing a variable would cause the callback to be made twice + success = [] + items = ('a', 'b', 'c') + textvar = tkinter.StringVar(self.root) + def cb_test(*args): + self.assertEqual(textvar.get(), items[1]) + success.append(True) + optmenu = ttk.OptionMenu(self.root, textvar, "a", *items) + textvar.trace("w", cb_test) + optmenu['menu'].invoke(1) + self.assertEqual(success, [True]) + class DefaultRootTest(AbstractDefaultRootTest, unittest.TestCase): |