| "Test percolator, coverage 100%." |
| |
| from idlelib.percolator import Percolator, Delegator |
| import unittest |
| from test.support import requires |
| requires('gui') |
| from tkinter import Text, Tk, END |
| |
| |
| class MyFilter(Delegator): |
| def __init__(self): |
| Delegator.__init__(self, None) |
| |
| def insert(self, *args): |
| self.insert_called_with = args |
| self.delegate.insert(*args) |
| |
| def delete(self, *args): |
| self.delete_called_with = args |
| self.delegate.delete(*args) |
| |
| def uppercase_insert(self, index, chars, tags=None): |
| chars = chars.upper() |
| self.delegate.insert(index, chars) |
| |
| def lowercase_insert(self, index, chars, tags=None): |
| chars = chars.lower() |
| self.delegate.insert(index, chars) |
| |
| def dont_insert(self, index, chars, tags=None): |
| pass |
| |
| |
| class PercolatorTest(unittest.TestCase): |
| |
| @classmethod |
| def setUpClass(cls): |
| cls.root = Tk() |
| cls.text = Text(cls.root) |
| |
| @classmethod |
| def tearDownClass(cls): |
| del cls.text |
| cls.root.destroy() |
| del cls.root |
| |
| def setUp(self): |
| self.percolator = Percolator(self.text) |
| self.filter_one = MyFilter() |
| self.filter_two = MyFilter() |
| self.percolator.insertfilter(self.filter_one) |
| self.percolator.insertfilter(self.filter_two) |
| |
| def tearDown(self): |
| self.percolator.close() |
| self.text.delete('1.0', END) |
| |
| def test_insertfilter(self): |
| self.assertIsNotNone(self.filter_one.delegate) |
| self.assertEqual(self.percolator.top, self.filter_two) |
| self.assertEqual(self.filter_two.delegate, self.filter_one) |
| self.assertEqual(self.filter_one.delegate, self.percolator.bottom) |
| |
| def test_removefilter(self): |
| filter_three = MyFilter() |
| self.percolator.removefilter(self.filter_two) |
| self.assertEqual(self.percolator.top, self.filter_one) |
| self.assertIsNone(self.filter_two.delegate) |
| |
| filter_three = MyFilter() |
| self.percolator.insertfilter(self.filter_two) |
| self.percolator.insertfilter(filter_three) |
| self.percolator.removefilter(self.filter_one) |
| self.assertEqual(self.percolator.top, filter_three) |
| self.assertEqual(filter_three.delegate, self.filter_two) |
| self.assertEqual(self.filter_two.delegate, self.percolator.bottom) |
| self.assertIsNone(self.filter_one.delegate) |
| |
| def test_insert(self): |
| self.text.insert('insert', 'foo') |
| self.assertEqual(self.text.get('1.0', END), 'foo\n') |
| self.assertTupleEqual(self.filter_one.insert_called_with, |
| ('insert', 'foo', None)) |
| |
| def test_modify_insert(self): |
| self.filter_one.insert = self.filter_one.uppercase_insert |
| self.text.insert('insert', 'bAr') |
| self.assertEqual(self.text.get('1.0', END), 'BAR\n') |
| |
| def test_modify_chain_insert(self): |
| filter_three = MyFilter() |
| self.percolator.insertfilter(filter_three) |
| self.filter_two.insert = self.filter_two.uppercase_insert |
| self.filter_one.insert = self.filter_one.lowercase_insert |
| self.text.insert('insert', 'BaR') |
| self.assertEqual(self.text.get('1.0', END), 'bar\n') |
| |
| def test_dont_insert(self): |
| self.filter_one.insert = self.filter_one.dont_insert |
| self.text.insert('insert', 'foo bar') |
| self.assertEqual(self.text.get('1.0', END), '\n') |
| self.filter_one.insert = self.filter_one.dont_insert |
| self.text.insert('insert', 'foo bar') |
| self.assertEqual(self.text.get('1.0', END), '\n') |
| |
| def test_without_filter(self): |
| self.text.insert('insert', 'hello') |
| self.assertEqual(self.text.get('1.0', 'end'), 'hello\n') |
| |
| def test_delete(self): |
| self.text.insert('insert', 'foo') |
| self.text.delete('1.0', '1.2') |
| self.assertEqual(self.text.get('1.0', END), 'o\n') |
| self.assertTupleEqual(self.filter_one.delete_called_with, |
| ('1.0', '1.2')) |
| |
| if __name__ == '__main__': |
| unittest.main(verbosity=2) |
