Skip to content

Update test_string_literals.py from 3.13.5 #5934

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
youknowone merged 1 commit into from
Jul 10, 2025
Merged

Update test_string_literals.py from 3.13.5 #5934

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
121 changes: 111 additions & 10 deletions Lib/test/test_string_literals.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -111,26 +111,92 @@ def test_eval_str_invalid_escape(self):
for b in range(1, 128):
if b in b"""\n\r"'01234567NU\\abfnrtuvx""":
continue
with self.assertWarns(DeprecationWarning):
with self.assertWarns(SyntaxWarning):
self.assertEqual(eval(r"'\%c'" % b), '\\' + chr(b))

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=DeprecationWarning)
warnings.simplefilter('always', category=SyntaxWarning)
eval("'''\n\\z'''")
self.assertEqual(len(w), 1)
self.assertEqual(str(w[0].message), r"invalid escape sequence '\z'")
self.assertEqual(w[0].filename, '<string>')
self.assertEqual(w[0].lineno, 1)
self.assertEqual(w[0].lineno, 2)

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=DeprecationWarning)
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("'''\n\\z'''")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid escape sequence '\z'")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 1)
self.assertEqual(exc.lineno, 2)
self.assertEqual(exc.offset, 1)

# Check that the warning is raised only once if there are syntax errors

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("'\\e' $")
exc = cm.exception
self.assertEqual(len(w), 1)
self.assertEqual(w[0].category, SyntaxWarning)
self.assertRegex(str(w[0].message), 'invalid escape sequence')
self.assertEqual(w[0].filename, '<string>')

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_eval_str_invalid_octal_escape(self):
for i in range(0o400, 0o1000):
with self.assertWarns(SyntaxWarning):
self.assertEqual(eval(r"'\%o'" % i), chr(i))

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
eval("'''\n\\407'''")
self.assertEqual(len(w), 1)
self.assertEqual(str(w[0].message),
r"invalid octal escape sequence '\407'")
self.assertEqual(w[0].filename, '<string>')
self.assertEqual(w[0].lineno, 2)

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("'''\n\\407'''")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid octal escape sequence '\407'")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 2)
self.assertEqual(exc.offset, 1)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_invalid_escape_locations_with_offset(self):
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("\"'''''''''''''''''''''invalid\\ Escape\"")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid escape sequence '\ '")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 1)
self.assertEqual(exc.offset, 30)

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("\"''Incorrect \\ logic?\"")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid escape sequence '\ '")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 1)
self.assertEqual(exc.offset, 14)

def test_eval_str_raw(self):
self.assertEqual(eval(""" r'x' """), 'x')
self.assertEqual(eval(r""" r'\x01' """), '\\' + 'x01')
Expand Down Expand Up @@ -163,24 +229,52 @@ def test_eval_bytes_invalid_escape(self):
for b in range(1, 128):
if b in b"""\n\r"'01234567\\abfnrtvx""":
continue
with self.assertWarns(DeprecationWarning):
with self.assertWarns(SyntaxWarning):
self.assertEqual(eval(r"b'\%c'" % b), b'\\' + bytes([b]))

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=DeprecationWarning)
warnings.simplefilter('always', category=SyntaxWarning)
eval("b'''\n\\z'''")
self.assertEqual(len(w), 1)
self.assertEqual(str(w[0].message), r"invalid escape sequence '\z'")
self.assertEqual(w[0].filename, '<string>')
self.assertEqual(w[0].lineno, 1)
self.assertEqual(w[0].lineno, 2)

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=DeprecationWarning)
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("b'''\n\\z'''")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid escape sequence '\z'")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 1)
self.assertEqual(exc.lineno, 2)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_eval_bytes_invalid_octal_escape(self):
for i in range(0o400, 0o1000):
with self.assertWarns(SyntaxWarning):
self.assertEqual(eval(r"b'\%o'" % i), bytes([i & 0o377]))

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('always', category=SyntaxWarning)
eval("b'''\n\\407'''")
self.assertEqual(len(w), 1)
self.assertEqual(str(w[0].message),
r"invalid octal escape sequence '\407'")
self.assertEqual(w[0].filename, '<string>')
self.assertEqual(w[0].lineno, 2)

with warnings.catch_warnings(record=True) as w:
warnings.simplefilter('error', category=SyntaxWarning)
with self.assertRaises(SyntaxError) as cm:
eval("b'''\n\\407'''")
exc = cm.exception
self.assertEqual(w, [])
self.assertEqual(exc.msg, r"invalid octal escape sequence '\407'")
self.assertEqual(exc.filename, '<string>')
self.assertEqual(exc.lineno, 2)

def test_eval_bytes_raw(self):
self.assertEqual(eval(""" br'x' """), b'x')
Expand Down Expand Up @@ -217,6 +311,13 @@ def test_eval_str_u(self):
self.assertRaises(SyntaxError, eval, """ bu'' """)
self.assertRaises(SyntaxError, eval, """ ub'' """)

def test_uppercase_prefixes(self):
self.assertEqual(eval(""" B'x' """), b'x')
self.assertEqual(eval(r""" R'\x01' """), r'\x01')
self.assertEqual(eval(r""" BR'\x01' """), br'\x01')
self.assertEqual(eval(""" F'{1+1}' """), f'{1+1}')
self.assertEqual(eval(r""" U'\U0001d120' """), u'\U0001d120')

def check_encoding(self, encoding, extra=""):
modname = "xx_" + encoding.replace("-", "_")
fn = os.path.join(self.tmpdir, modname + ".py")
Expand Down
Loading