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122 lines
4 KiB
Python
122 lines
4 KiB
Python
"""Unittest for idlelib.WidgetRedirector
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100% coverage
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"""
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from test.support import requires
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import unittest
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from idlelib.idle_test.mock_idle import Func
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from tkinter import Tk, Text, TclError
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from idlelib.WidgetRedirector import WidgetRedirector
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class InitCloseTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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requires('gui')
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cls.tk = Tk()
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cls.text = Text(cls.tk)
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@classmethod
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def tearDownClass(cls):
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cls.text.destroy()
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cls.tk.destroy()
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del cls.text, cls.tk
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def test_init(self):
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redir = WidgetRedirector(self.text)
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self.assertEqual(redir.widget, self.text)
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self.assertEqual(redir.tk, self.text.tk)
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self.assertRaises(TclError, WidgetRedirector, self.text)
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redir.close() # restore self.tk, self.text
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def test_close(self):
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redir = WidgetRedirector(self.text)
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redir.register('insert', Func)
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redir.close()
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self.assertEqual(redir._operations, {})
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self.assertFalse(hasattr(self.text, 'widget'))
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class WidgetRedirectorTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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requires('gui')
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cls.tk = Tk()
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cls.text = Text(cls.tk)
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@classmethod
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def tearDownClass(cls):
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cls.text.destroy()
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cls.tk.destroy()
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del cls.text, cls.tk
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def setUp(self):
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self.redir = WidgetRedirector(self.text)
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self.func = Func()
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self.orig_insert = self.redir.register('insert', self.func)
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self.text.insert('insert', 'asdf') # leaves self.text empty
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def tearDown(self):
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self.text.delete('1.0', 'end')
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self.redir.close()
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def test_repr(self): # partly for 100% coverage
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self.assertIn('Redirector', repr(self.redir))
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self.assertIn('Original', repr(self.orig_insert))
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def test_register(self):
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self.assertEqual(self.text.get('1.0', 'end'), '\n')
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self.assertEqual(self.func.args, ('insert', 'asdf'))
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self.assertIn('insert', self.redir._operations)
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self.assertIn('insert', self.text.__dict__)
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self.assertEqual(self.text.insert, self.func)
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def test_original_command(self):
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self.assertEqual(self.orig_insert.operation, 'insert')
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self.assertEqual(self.orig_insert.tk_call, self.text.tk.call)
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self.orig_insert('insert', 'asdf')
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self.assertEqual(self.text.get('1.0', 'end'), 'asdf\n')
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def test_unregister(self):
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self.assertIsNone(self.redir.unregister('invalid operation name'))
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self.assertEqual(self.redir.unregister('insert'), self.func)
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self.assertNotIn('insert', self.redir._operations)
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self.assertNotIn('insert', self.text.__dict__)
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def test_unregister_no_attribute(self):
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del self.text.insert
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self.assertEqual(self.redir.unregister('insert'), self.func)
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def test_dispatch_intercept(self):
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self.func.__init__(True)
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self.assertTrue(self.redir.dispatch('insert', False))
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self.assertFalse(self.func.args[0])
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def test_dispatch_bypass(self):
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self.orig_insert('insert', 'asdf')
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# tk.call returns '' where Python would return None
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self.assertEqual(self.redir.dispatch('delete', '1.0', 'end'), '')
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self.assertEqual(self.text.get('1.0', 'end'), '\n')
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def test_dispatch_error(self):
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self.func.__init__(TclError())
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self.assertEqual(self.redir.dispatch('insert', False), '')
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self.assertEqual(self.redir.dispatch('invalid'), '')
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def test_command_dispatch(self):
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# Test that .__init__ causes redirection of tk calls
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# through redir.dispatch
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self.tk.call(self.text._w, 'insert', 'hello')
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self.assertEqual(self.func.args, ('hello',))
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self.assertEqual(self.text.get('1.0', 'end'), '\n')
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# Ensure that called through redir .dispatch and not through
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# self.text.insert by having mock raise TclError.
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self.func.__init__(TclError())
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self.assertEqual(self.tk.call(self.text._w, 'insert', 'boo'), '')
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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