Python code coverage for Lib/idlelib/idle_test/test_redirector.py

#	count	content
1	n/a	'''Test idlelib.redirector.
2	n/a
3	n/a	100% coverage
4	n/a	'''
5	n/a	from test.support import requires
6	n/a	import unittest
7	n/a	from idlelib.idle_test.mock_idle import Func
8	n/a	from tkinter import Tk, Text, TclError
9	n/a	from idlelib.redirector import WidgetRedirector
10	n/a
11	n/a
12	n/a	class InitCloseTest(unittest.TestCase):
13	n/a
14	n/a	@classmethod
15	n/a	def setUpClass(cls):
16	n/a	requires('gui')
17	n/a	cls.root = Tk()
18	n/a	cls.root.withdraw()
19	n/a	cls.text = Text(cls.root)
20	n/a
21	n/a	@classmethod
22	n/a	def tearDownClass(cls):
23	n/a	del cls.text
24	n/a	cls.root.destroy()
25	n/a	del cls.root
26	n/a
27	n/a	def test_init(self):
28	n/a	redir = WidgetRedirector(self.text)
29	n/a	self.assertEqual(redir.widget, self.text)
30	n/a	self.assertEqual(redir.tk, self.text.tk)
31	n/a	self.assertRaises(TclError, WidgetRedirector, self.text)
32	n/a	redir.close() # restore self.tk, self.text
33	n/a
34	n/a	def test_close(self):
35	n/a	redir = WidgetRedirector(self.text)
36	n/a	redir.register('insert', Func)
37	n/a	redir.close()
38	n/a	self.assertEqual(redir._operations, {})
39	n/a	self.assertFalse(hasattr(self.text, 'widget'))
40	n/a
41	n/a
42	n/a	class WidgetRedirectorTest(unittest.TestCase):
43	n/a
44	n/a	@classmethod
45	n/a	def setUpClass(cls):
46	n/a	requires('gui')
47	n/a	cls.root = Tk()
48	n/a	cls.root.withdraw()
49	n/a	cls.text = Text(cls.root)
50	n/a
51	n/a	@classmethod
52	n/a	def tearDownClass(cls):
53	n/a	del cls.text
54	n/a	cls.root.update_idletasks()
55	n/a	cls.root.destroy()
56	n/a	del cls.root
57	n/a
58	n/a	def setUp(self):
59	n/a	self.redir = WidgetRedirector(self.text)
60	n/a	self.func = Func()
61	n/a	self.orig_insert = self.redir.register('insert', self.func)
62	n/a	self.text.insert('insert', 'asdf') # leaves self.text empty
63	n/a
64	n/a	def tearDown(self):
65	n/a	self.text.delete('1.0', 'end')
66	n/a	self.redir.close()
67	n/a
68	n/a	def test_repr(self): # partly for 100% coverage
69	n/a	self.assertIn('Redirector', repr(self.redir))
70	n/a	self.assertIn('Original', repr(self.orig_insert))
71	n/a
72	n/a	def test_register(self):
73	n/a	self.assertEqual(self.text.get('1.0', 'end'), '\n')
74	n/a	self.assertEqual(self.func.args, ('insert', 'asdf'))
75	n/a	self.assertIn('insert', self.redir._operations)
76	n/a	self.assertIn('insert', self.text.__dict__)
77	n/a	self.assertEqual(self.text.insert, self.func)
78	n/a
79	n/a	def test_original_command(self):
80	n/a	self.assertEqual(self.orig_insert.operation, 'insert')
81	n/a	self.assertEqual(self.orig_insert.tk_call, self.text.tk.call)
82	n/a	self.orig_insert('insert', 'asdf')
83	n/a	self.assertEqual(self.text.get('1.0', 'end'), 'asdf\n')
84	n/a
85	n/a	def test_unregister(self):
86	n/a	self.assertIsNone(self.redir.unregister('invalid operation name'))
87	n/a	self.assertEqual(self.redir.unregister('insert'), self.func)
88	n/a	self.assertNotIn('insert', self.redir._operations)
89	n/a	self.assertNotIn('insert', self.text.__dict__)
90	n/a
91	n/a	def test_unregister_no_attribute(self):
92	n/a	del self.text.insert
93	n/a	self.assertEqual(self.redir.unregister('insert'), self.func)
94	n/a
95	n/a	def test_dispatch_intercept(self):
96	n/a	self.func.__init__(True)
97	n/a	self.assertTrue(self.redir.dispatch('insert', False))
98	n/a	self.assertFalse(self.func.args[0])
99	n/a
100	n/a	def test_dispatch_bypass(self):
101	n/a	self.orig_insert('insert', 'asdf')
102	n/a	# tk.call returns '' where Python would return None
103	n/a	self.assertEqual(self.redir.dispatch('delete', '1.0', 'end'), '')
104	n/a	self.assertEqual(self.text.get('1.0', 'end'), '\n')
105	n/a
106	n/a	def test_dispatch_error(self):
107	n/a	self.func.__init__(TclError())
108	n/a	self.assertEqual(self.redir.dispatch('insert', False), '')
109	n/a	self.assertEqual(self.redir.dispatch('invalid'), '')
110	n/a
111	n/a	def test_command_dispatch(self):
112	n/a	# Test that .__init__ causes redirection of tk calls
113	n/a	# through redir.dispatch
114	n/a	self.root.call(self.text._w, 'insert', 'hello')
115	n/a	self.assertEqual(self.func.args, ('hello',))
116	n/a	self.assertEqual(self.text.get('1.0', 'end'), '\n')
117	n/a	# Ensure that called through redir .dispatch and not through
118	n/a	# self.text.insert by having mock raise TclError.
119	n/a	self.func.__init__(TclError())
120	n/a	self.assertEqual(self.root.call(self.text._w, 'insert', 'boo'), '')
121	n/a
122	n/a
123	n/a	if __name__ == '__main__':
124	n/a	unittest.main(verbosity=2)