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gh-97928: Add tests for tkinter.Text.count() #98269

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Oct 19, 2022
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gh-97928: Add tests for tkinter.Text.count() #98269

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54 changes: 54 additions & 0 deletions Lib/test/test_tkinter/test_text.py
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,60 @@ def test_search(self):
self.assertEqual(text.search('-test', '1.0', 'end'), '1.2')
self.assertEqual(text.search('test', '1.0', 'end'), '1.3')

def test_count(self):
# XXX Some assertions do not check against the intended result,
# but instead check the current result to prevent regression.
text = self.text
text.insert('1.0',
'Lorem ipsum dolor sit amet,\n'
'consectetur adipiscing elit,\n'
'sed do eiusmod tempor incididunt\n'
'ut labore et dolore magna aliqua.')

options = ('chars', 'indices', 'lines',
'displaychars', 'displayindices', 'displaylines',
'xpixels', 'ypixels')
if self.wantobjects:
self.assertEqual(len(text.count('1.0', 'end', *options)), 8)
else:
text.count('1.0', 'end', *options)
self.assertEqual(text.count('1.0', 'end', 'chars', 'lines'), (124, 4)
if self.wantobjects else '124 4')
self.assertEqual(text.count('1.3', '4.5', 'chars', 'lines'), (92, 3)
if self.wantobjects else '92 3')
self.assertEqual(text.count('4.5', '1.3', 'chars', 'lines'), (-92, -3)
if self.wantobjects else '-92 -3')
self.assertEqual(text.count('1.3', '1.3', 'chars', 'lines'), (0, 0)
if self.wantobjects else '0 0')
self.assertEqual(text.count('1.0', 'end', 'lines'), (4,)
if self.wantobjects else ('4',))
self.assertEqual(text.count('end', '1.0', 'lines'), (-4,)
if self.wantobjects else ('-4',))
self.assertEqual(text.count('1.3', '1.5', 'lines'), None
if self.wantobjects else ('0',))
self.assertEqual(text.count('1.3', '1.3', 'lines'), None
if self.wantobjects else ('0',))
self.assertEqual(text.count('1.0', 'end'), (124,) # 'indices' by default
if self.wantobjects else ('124',))
self.assertRaises(tkinter.TclError, text.count, '1.0', 'end', 'spam')
# '-lines' is ignored, 'indices' is used by default
self.assertEqual(text.count('1.0', 'end', '-lines'), (124,)
if self.wantobjects else ('124',))

self.assertIsInstance(text.count('1.3', '1.5', 'ypixels'), tuple)
self.assertIsInstance(text.count('1.3', '1.5', 'update', 'ypixels'), int
if self.wantobjects else str)
self.assertEqual(text.count('1.3', '1.3', 'update', 'ypixels'), None
if self.wantobjects else '0')
self.assertEqual(text.count('1.3', '1.5', 'update', 'indices'), 2
if self.wantobjects else '2')
self.assertEqual(text.count('1.3', '1.3', 'update', 'indices'), None
if self.wantobjects else '0')
self.assertEqual(text.count('1.3', '1.5', 'update'), (2,)
if self.wantobjects else ('2',))
self.assertEqual(text.count('1.3', '1.3', 'update'), None
if self.wantobjects else ('0',))


if __name__ == "__main__":
unittest.main()