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118 lines
4 KiB
Python
118 lines
4 KiB
Python
'''Test percolator.py.'''
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from test.support import requires
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requires('gui')
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import unittest
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from tkinter import Text, Tk, END
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from idlelib.percolator import Percolator, Delegator
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class MyFilter(Delegator):
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def __init__(self):
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Delegator.__init__(self, None)
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def insert(self, *args):
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self.insert_called_with = args
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self.delegate.insert(*args)
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def delete(self, *args):
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self.delete_called_with = args
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self.delegate.delete(*args)
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def uppercase_insert(self, index, chars, tags=None):
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chars = chars.upper()
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self.delegate.insert(index, chars)
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def lowercase_insert(self, index, chars, tags=None):
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chars = chars.lower()
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self.delegate.insert(index, chars)
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def dont_insert(self, index, chars, tags=None):
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pass
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class PercolatorTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.root = Tk()
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cls.text = Text(cls.root)
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@classmethod
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def tearDownClass(cls):
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del cls.text
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cls.root.destroy()
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del cls.root
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def setUp(self):
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self.percolator = Percolator(self.text)
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self.filter_one = MyFilter()
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self.filter_two = MyFilter()
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self.percolator.insertfilter(self.filter_one)
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self.percolator.insertfilter(self.filter_two)
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def tearDown(self):
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self.percolator.close()
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self.text.delete('1.0', END)
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def test_insertfilter(self):
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self.assertIsNotNone(self.filter_one.delegate)
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self.assertEqual(self.percolator.top, self.filter_two)
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self.assertEqual(self.filter_two.delegate, self.filter_one)
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self.assertEqual(self.filter_one.delegate, self.percolator.bottom)
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def test_removefilter(self):
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filter_three = MyFilter()
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self.percolator.removefilter(self.filter_two)
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self.assertEqual(self.percolator.top, self.filter_one)
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self.assertIsNone(self.filter_two.delegate)
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filter_three = MyFilter()
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self.percolator.insertfilter(self.filter_two)
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self.percolator.insertfilter(filter_three)
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self.percolator.removefilter(self.filter_one)
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self.assertEqual(self.percolator.top, filter_three)
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self.assertEqual(filter_three.delegate, self.filter_two)
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self.assertEqual(self.filter_two.delegate, self.percolator.bottom)
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self.assertIsNone(self.filter_one.delegate)
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def test_insert(self):
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self.text.insert('insert', 'foo')
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self.assertEqual(self.text.get('1.0', END), 'foo\n')
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self.assertTupleEqual(self.filter_one.insert_called_with,
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('insert', 'foo', None))
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def test_modify_insert(self):
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self.filter_one.insert = self.filter_one.uppercase_insert
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self.text.insert('insert', 'bAr')
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self.assertEqual(self.text.get('1.0', END), 'BAR\n')
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def test_modify_chain_insert(self):
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filter_three = MyFilter()
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self.percolator.insertfilter(filter_three)
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self.filter_two.insert = self.filter_two.uppercase_insert
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self.filter_one.insert = self.filter_one.lowercase_insert
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self.text.insert('insert', 'BaR')
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self.assertEqual(self.text.get('1.0', END), 'bar\n')
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def test_dont_insert(self):
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self.filter_one.insert = self.filter_one.dont_insert
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self.text.insert('insert', 'foo bar')
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self.assertEqual(self.text.get('1.0', END), '\n')
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self.filter_one.insert = self.filter_one.dont_insert
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self.text.insert('insert', 'foo bar')
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self.assertEqual(self.text.get('1.0', END), '\n')
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def test_without_filter(self):
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self.text.insert('insert', 'hello')
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self.assertEqual(self.text.get('1.0', 'end'), 'hello\n')
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def test_delete(self):
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self.text.insert('insert', 'foo')
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self.text.delete('1.0', '1.2')
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self.assertEqual(self.text.get('1.0', END), 'o\n')
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self.assertTupleEqual(self.filter_one.delete_called_with,
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('1.0', '1.2'))
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if __name__ == '__main__':
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unittest.main(verbosity=2)
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