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[3.9] bpo-43272: Fix old parser test failures for backported grammar constructs (GH-24591)

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Pablo Galindo 2021-02-20 01:36:15 +00:00 • committed by GitHub
parent a67fd011ea
commit f9d1bf2de0
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3 changed files with 33 additions and 23 deletions
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45
Lib/test/test_unpack_ex.py
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@ -1,5 +1,7 @@
# Tests for extended unpacking, starred expressions.
from test.support import use_old_parser
doctests = """
Unpack tuple
@ -346,6 +348,26 @@
...
SyntaxError: can't use starred expression here
Some size constraints (all fail.)
>>> s = ", ".join("a%d" % i for i in range(1<<8)) + ", *rest = range(1<<8 + 1)"
>>> compile(s, 'test', 'exec') # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: too many expressions in star-unpacking assignment
>>> s = ", ".join("a%d" % i for i in range(1<<8 + 1)) + ", *rest = range(1<<8 + 2)"
>>> compile(s, 'test', 'exec') # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: too many expressions in star-unpacking assignment
(there is an additional limit, on the number of expressions after the
'*rest', but it's 1<<24 and testing it takes too much memory.)
"""
new_parser_doctests = """\
>>> (*x),y = 1, 2 # doctest:+ELLIPSIS
Traceback (most recent call last):
...
@ -370,27 +392,12 @@
Traceback (most recent call last):
...
SyntaxError: can't use starred expression here
Some size constraints (all fail.)
>>> s = ", ".join("a%d" % i for i in range(1<<8)) + ", *rest = range(1<<8 + 1)"
>>> compile(s, 'test', 'exec') # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: too many expressions in star-unpacking assignment
>>> s = ", ".join("a%d" % i for i in range(1<<8 + 1)) + ", *rest = range(1<<8 + 2)"
>>> compile(s, 'test', 'exec') # doctest:+ELLIPSIS
Traceback (most recent call last):
...
SyntaxError: too many expressions in star-unpacking assignment
(there is an additional limit, on the number of expressions after the
'*rest', but it's 1<<24 and testing it takes too much memory.)
"""
__test__ = {'doctests' : doctests}
if use_old_parser():
__test__ = {'doctests' : doctests}
else:
__test__ = {'doctests' : doctests + new_parser_doctests}
def test_main(verbose=False):
from test import support