mirror of https://github.com/python/cpython
Added the test cases I actually meant to add.
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@ -562,6 +562,11 @@ class BuiltinTest(unittest.TestCase):
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self.assertRaises(TypeError, format, object(), 4)
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self.assertRaises(TypeError, format, object(), object())
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# first argument to object.__format__ must be string
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self.assertRaises(TypeError, object().__format__, 3)
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self.assertRaises(TypeError, object().__format__, object())
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self.assertRaises(TypeError, object().__format__, None)
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# make sure we can take a subclass of str as a format spec
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self.assertEqual(format(0, C('10')), ' 0')
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