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bpo-46820: Refactor tests for ambiguous end of numerical literal (GH-31494)

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(cherry picked from commit 98c3bea4d1)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
This commit is contained in:
Miss Islington (bot) 2022-02-25 00:49:55 -08:00 • committed by GitHub
parent b0de6299a8
commit c7a0fd2d3f
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1 changed files with 24 additions and 88 deletions
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112
Lib/test/test_grammar.py
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@ -214,99 +214,35 @@ class TokenTests(unittest.TestCase):
check("1e+", "invalid decimal literal")
def test_end_of_numerical_literals(self):
def check(test):
with self.assertWarns(DeprecationWarning):
compile(test, "<testcase>", "eval")
def check(test, error=False):
with self.subTest(expr=test):
if error:
with warnings.catch_warnings(record=True) as w:
with self.assertRaises(SyntaxError):
compile(test, "<testcase>", "eval")
self.assertEqual(w, [])
else:
with self.assertWarns(DeprecationWarning):
compile(test, "<testcase>", "eval")
def check_error(test):
with warnings.catch_warnings(record=True) as w:
with self.assertRaises(SyntaxError):
compile(test, "<testcase>", "eval")
self.assertEqual(w, [])
check_error("0xfand x")
check("0o7and x")
check("0b1and x")
check("9and x")
check("0and x")
check("1.and x")
check("1e3and x")
check("1jand x")
check("0xfor x")
check("0o7or x")
check("0b1or x")
check("9or x")
check_error("0or x")
check("1.or x")
check("1e3or x")
check("1jor x")
check("0xfin x")
check("0o7in x")
check("0b1in x")
check("9in x")
check("0in x")
check("1.in x")
check("1e3in x")
check("1jin x")
check("0xfnot in x")
check("0o7not in x")
check("0b1not in x")
check("9not in x")
check("0not in x")
check("1.not in x")
check("1e3not in x")
check("1jnot in x")
with warnings.catch_warnings():
warnings.simplefilter('ignore', SyntaxWarning)
check("0xfis x")
check("0o7is x")
check("0b1is x")
check("9is x")
check("0is x")
check("1.is x")
check("1e3is x")
check("1jis x")
check("0xfif x else y")
check("0o7if x else y")
check("0b1if x else y")
check("9if x else y")
check("0if x else y")
check("1.if x else y")
check("1e3if x else y")
check("1jif x else y")
check_error("x if 0xfelse y")
check("x if 0o7else y")
check("x if 0b1else y")
check("x if 9else y")
check("x if 0else y")
check("x if 1.else y")
check("x if 1e3else y")
check("x if 1jelse y")
for num in "0xf", "0o7", "0b1", "9", "0", "1.", "1e3", "1j":
compile(num, "<testcase>", "eval")
check(f"{num}and x", error=(num == "0xf"))
check(f"{num}or x", error=(num == "0"))
check(f"{num}in x")
check(f"{num}not in x")
with warnings.catch_warnings():
warnings.filterwarnings('ignore', '"is" with a literal',
SyntaxWarning)
check(f"{num}is x")
check(f"{num}if x else y")
check(f"x if {num}else y", error=(num == "0xf"))
check(f"[{num}for x in ()]")
check(f"{num}spam", error=True)
check("[0x1ffor x in ()]")
check("[0x1for x in ()]")
check("[0xfor x in ()]")
check("[0o7for x in ()]")
check("[0b1for x in ()]")
check("[9for x in ()]")
check("[1.for x in ()]")
check("[1e3for x in ()]")
check("[1jfor x in ()]")
check_error("0xfspam")
check_error("0o7spam")
check_error("0b1spam")
check_error("9spam")
check_error("0spam")
check_error("1.spam")
check_error("1e3spam")
check_error("1jspam")
def test_string_literals(self):
x = ''; y = ""; self.assertTrue(len(x) == 0 and x == y)