bpo-32857: Raise error when tkinter after_cancel() is called with Non… · python/cpython@73a4396 (original) (raw)

`@@ -48,6 +48,114 @@ def test_tk_setPalette(self):

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`'^must specify a background color$',

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`root.tk_setPalette, highlightColor='blue')

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def test_after(self):

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root = self.root

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+

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def callback(start=0, step=1):

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nonlocal count

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count = start + step

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+

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Without function, sleeps for ms.

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self.assertIsNone(root.after(1))

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+

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Set up with callback with no args.

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count = 0

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timer1 = root.after(0, callback)

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self.assertIn(timer1, root.tk.call('after', 'info'))

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1))

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root.update() # Process all pending events.

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self.assertEqual(count, 1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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+

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Set up with callback with args.

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count = 0

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timer1 = root.after(0, callback, 42, 11)

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root.update() # Process all pending events.

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self.assertEqual(count, 53)

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+

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Cancel before called.

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timer1 = root.after(1000, callback)

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self.assertIn(timer1, root.tk.call('after', 'info'))

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1))

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root.after_cancel(timer1) # Cancel this event.

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self.assertEqual(count, 53)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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+

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def test_after_idle(self):

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root = self.root

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+

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def callback(start=0, step=1):

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nonlocal count

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count = start + step

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+

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Set up with callback with no args.

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count = 0

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idle1 = root.after_idle(callback)

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self.assertIn(idle1, root.tk.call('after', 'info'))

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1))

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root.update_idletasks() # Process all pending events.

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self.assertEqual(count, 1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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+

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Set up with callback with args.

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count = 0

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idle1 = root.after_idle(callback, 42, 11)

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root.update_idletasks() # Process all pending events.

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self.assertEqual(count, 53)

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+

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Cancel before called.

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idle1 = root.after_idle(callback)

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self.assertIn(idle1, root.tk.call('after', 'info'))

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1))

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root.after_cancel(idle1) # Cancel this event.

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self.assertEqual(count, 53)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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+

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def test_after_cancel(self):

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root = self.root

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+

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def callback():

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nonlocal count

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count += 1

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+

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timer1 = root.after(5000, callback)

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idle1 = root.after_idle(callback)

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+

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No value for id raises a ValueError.

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with self.assertRaises(ValueError):

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root.after_cancel(None)

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+

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Cancel timer event.

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count = 0

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1))

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root.tk.call(script)

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self.assertEqual(count, 1)

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root.after_cancel(timer1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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self.assertEqual(count, 1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call('after', 'info', timer1)

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+

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Cancel same event - nothing happens.

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root.after_cancel(timer1)

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+

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Cancel idle event.

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count = 0

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(script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1))

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root.tk.call(script)

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self.assertEqual(count, 1)

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root.after_cancel(idle1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call(script)

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self.assertEqual(count, 1)

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with self.assertRaises(tkinter.TclError):

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root.tk.call('after', 'info', idle1)

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+

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`tests_gui = (MiscTest, )

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