test_misc.py
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| py
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import unittest import Tkinter as tkinter from test.test_support import requires, run_unittest from test_ttk.support import AbstractTkTest requires('gui') class MiscTest(AbstractTkTest, unittest.TestCase): def test_after(self): root = self.root cbcount = {'count': 0} def callback(start=0, step=1): cbcount['count'] = start + step # Without function, sleeps for ms. self.assertIsNone(root.after(1)) # Set up with callback with no args. cbcount['count'] = 0 timer1 = root.after(0, callback) self.assertIn(timer1, root.tk.call('after', 'info')) (script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1)) root.update() # Process all pending events. self.assertEqual(cbcount['count'], 1) with self.assertRaises(tkinter.TclError): root.tk.call(script) # Set up with callback with args. cbcount['count'] = 0 timer1 = root.after(0, callback, 42, 11) root.update() # Process all pending events. self.assertEqual(cbcount['count'], 53) # Cancel before called. timer1 = root.after(1000, callback) self.assertIn(timer1, root.tk.call('after', 'info')) (script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1)) root.after_cancel(timer1) # Cancel this event. self.assertEqual(cbcount['count'], 53) with self.assertRaises(tkinter.TclError): root.tk.call(script) def test_after_idle(self): root = self.root cbcount = {'count': 0} def callback(start=0, step=1): cbcount['count'] = start + step # Set up with callback with no args. cbcount['count'] = 0 idle1 = root.after_idle(callback) self.assertIn(idle1, root.tk.call('after', 'info')) (script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1)) root.update_idletasks() # Process all pending events. self.assertEqual(cbcount['count'], 1) with self.assertRaises(tkinter.TclError): root.tk.call(script) # Set up with callback with args. cbcount['count'] = 0 idle1 = root.after_idle(callback, 42, 11) root.update_idletasks() # Process all pending events. self.assertEqual(cbcount['count'], 53) # Cancel before called. idle1 = root.after_idle(callback) self.assertIn(idle1, root.tk.call('after', 'info')) (script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1)) root.after_cancel(idle1) # Cancel this event. self.assertEqual(cbcount['count'], 53) with self.assertRaises(tkinter.TclError): root.tk.call(script) def test_after_cancel(self): root = self.root cbcount = {'count': 0} def callback(): cbcount['count'] += 1 timer1 = root.after(5000, callback) idle1 = root.after_idle(callback) # No value for id raises a ValueError. with self.assertRaises(ValueError): root.after_cancel(None) # Cancel timer event. cbcount['count'] = 0 (script, _) = root.tk.splitlist(root.tk.call('after', 'info', timer1)) root.tk.call(script) self.assertEqual(cbcount['count'], 1) root.after_cancel(timer1) with self.assertRaises(tkinter.TclError): root.tk.call(script) self.assertEqual(cbcount['count'], 1) with self.assertRaises(tkinter.TclError): root.tk.call('after', 'info', timer1) # Cancel same event - nothing happens. root.after_cancel(timer1) # Cancel idle event. cbcount['count'] = 0 (script, _) = root.tk.splitlist(root.tk.call('after', 'info', idle1)) root.tk.call(script) self.assertEqual(cbcount['count'], 1) root.after_cancel(idle1) with self.assertRaises(tkinter.TclError): root.tk.call(script) self.assertEqual(cbcount['count'], 1) with self.assertRaises(tkinter.TclError): root.tk.call('after', 'info', idle1) tests_gui = (MiscTest, ) if __name__ == "__main__": run_unittest(*tests_gui)
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