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Test syntax error on comma-less tuple-style sequence patterns (#115485)
Adds a test that length-1 tuple-style sequence patterns must end in a comma, since there isn't currently one. Spotted while reviewing Cython's proposed implementation of the pattern matching syntax (https://github.com/cython/cython/pull/4897#discussion_r1489177169) where there was a bug my the reimplementation that wasn't caught against the CPython tests here.
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@ -2957,6 +2957,14 @@ def test_invalid_syntax_3(self):
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pass
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""")
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def test_len1_tuple_sequence_pattern_comma(self):
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# correct syntax would be `case(*x,):`
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self.assert_syntax_error("""
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match ...:
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case (*x):
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pass
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""")
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def test_mapping_pattern_keys_may_only_match_literals_and_attribute_lookups(self):
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self.assert_syntax_error("""
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match ...:
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