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"Test percolator, coverage 100%." |
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from idlelib.percolator import Percolator, Delegator |
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import unittest |
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from test.support import requires |
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requires('gui') |
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from tkinter import Text, Tk, END |
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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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