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"""test script for a few new invalid token catches"""
import sys
from test import support
from test.support import os_helper
from test.support import script_helper
import unittest
class EOFTestCase(unittest.TestCase):
def test_EOF_single_quote(self):
expect = "unterminated string literal (detected at line 1) (<string>, line 1)"
for quote in ("'", "\""):
try:
eval(f"""{quote}this is a test\
""")
except SyntaxError as msg:
self.assertEqual(str(msg), expect)
self.assertEqual(msg.offset, 1)
else:
raise support.TestFailed
def test_EOFS(self):
expect = ("unterminated triple-quoted string literal (detected at line 1) (<string>, line 1)")
try:
eval("""'''this is a test""")
except SyntaxError as msg:
self.assertEqual(str(msg), expect)
self.assertEqual(msg.offset, 1)
else:
raise support.TestFailed
def test_EOFS_with_file(self):
expect = ("(<string>, line 1)")
with os_helper.temp_dir() as temp_dir:
file_name = script_helper.make_script(temp_dir, 'foo', """'''this is \na \ntest""")
rc, out, err = script_helper.assert_python_failure(file_name)
self.assertIn(b'unterminated triple-quoted string literal (detected at line 3)', err)
def test_eof_with_line_continuation(self):
expect = "unexpected EOF while parsing (<string>, line 1)"
try:
compile('"\\xhh" \\', '<string>', 'exec', dont_inherit=True)
except SyntaxError as msg:
self.assertEqual(str(msg), expect)
else:
raise support.TestFailed
def test_line_continuation_EOF(self):
"""A continuation at the end of input must be an error; bpo2180."""
expect = 'unexpected EOF while parsing (<string>, line 1)'
with self.assertRaises(SyntaxError) as excinfo:
exec('x = 5\\')
self.assertEqual(str(excinfo.exception), expect)
with self.assertRaises(SyntaxError) as excinfo:
exec('\\')
self.assertEqual(str(excinfo.exception), expect)
@unittest.skipIf(not sys.executable, "sys.executable required")
def test_line_continuation_EOF_from_file_bpo2180(self):
"""Ensure tok_nextc() does not add too many ending newlines."""
with os_helper.temp_dir() as temp_dir:
file_name = script_helper.make_script(temp_dir, 'foo', '\\')
rc, out, err = script_helper.assert_python_failure(file_name)
self.assertIn(b'unexpected EOF while parsing', err)
self.assertIn(b'line 1', err)
self.assertIn(b'\\', err)
file_name = script_helper.make_script(temp_dir, 'foo', 'y = 6\\')
rc, out, err = script_helper.assert_python_failure(file_name)
self.assertIn(b'unexpected EOF while parsing', err)
self.assertIn(b'line 1', err)
self.assertIn(b'y = 6\\', err)
if __name__ == "__main__":
unittest.main()