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gh-133213: Add tests for string.templatelib.TemplateIter (#133215)

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Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
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sobolevn 2025-04-30 22:38:25 +03:00 • committed by GitHub
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commit 0e21ed7c09
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Lib/test/test_string/test_templatelib.py
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@ -1,5 +1,6 @@
import pickle
import unittest
from collections.abc import Iterator, Iterable
from string.templatelib import Template, Interpolation
from test.test_string._support import TStringBaseCase, fstring
@ -125,5 +126,28 @@ def test_pickle_interpolation(self):
self.assertEqual(unpickled.format_spec, interpolation.format_spec)
class TemplateIterTests(unittest.TestCase):
def test_abc(self):
self.assertIsInstance(iter(t''), Iterable)
self.assertIsInstance(iter(t''), Iterator)
def test_final(self):
TemplateIter = type(iter(t''))
with self.assertRaisesRegex(TypeError, 'is not an acceptable base type'):
class Sub(TemplateIter): ...
def test_iter(self):
x = 1
res = list(iter(t'abc {x} yz'))
self.assertEqual(res[0], 'abc ')
self.assertIsInstance(res[1], Interpolation)
self.assertEqual(res[1].value, 1)
self.assertEqual(res[1].expression, 'x')
self.assertEqual(res[1].conversion, None)
self.assertEqual(res[1].format_spec, '')
self.assertEqual(res[2], ' yz')
if __name__ == '__main__':
unittest.main()