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097b8b6d52
When a file ends with a line that contains a line continuation character
the text of the emitted SyntaxError is empty, contrary to the old
parser, where the error text contained the text of the last line.
(cherry picked from commit 113e2b0a07)
Co-authored-by: Lysandros Nikolaou <lisandrosnik@gmail.com>
65 lines
2.4 KiB
Python
65 lines
2.4 KiB
Python
"""test script for a few new invalid token catches"""
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import sys
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from test import support
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from test.support import script_helper
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import unittest
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class EOFTestCase(unittest.TestCase):
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def test_EOFC(self):
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expect = "EOL while scanning string literal (<string>, line 1)"
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try:
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eval("""'this is a test\
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""")
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except SyntaxError as msg:
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self.assertEqual(str(msg), expect)
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else:
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raise support.TestFailed
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def test_EOFS(self):
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expect = ("EOF while scanning triple-quoted string literal "
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"(<string>, line 1)")
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try:
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eval("""'''this is a test""")
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except SyntaxError as msg:
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self.assertEqual(str(msg), expect)
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else:
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raise support.TestFailed
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def test_eof_with_line_continuation(self):
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expect = "unexpected EOF while parsing (<string>, line 1)"
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try:
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compile('"\\xhh" \\', '<string>', 'exec', dont_inherit=True)
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except SyntaxError as msg:
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self.assertEqual(str(msg), expect)
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else:
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raise support.TestFailed
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def test_line_continuation_EOF(self):
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"""A continuation at the end of input must be an error; bpo2180."""
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expect = 'unexpected EOF while parsing (<string>, line 1)'
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with self.assertRaises(SyntaxError) as excinfo:
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exec('x = 5\\')
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self.assertEqual(str(excinfo.exception), expect)
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with self.assertRaises(SyntaxError) as excinfo:
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exec('\\')
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self.assertEqual(str(excinfo.exception), expect)
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@unittest.skipIf(not sys.executable, "sys.executable required")
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def test_line_continuation_EOF_from_file_bpo2180(self):
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"""Ensure tok_nextc() does not add too many ending newlines."""
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with support.temp_dir() as temp_dir:
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file_name = script_helper.make_script(temp_dir, 'foo', '\\')
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rc, out, err = script_helper.assert_python_failure(file_name)
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self.assertIn(b'unexpected EOF while parsing', err)
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self.assertIn(b'line 2', err)
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self.assertIn(b'\\', err)
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file_name = script_helper.make_script(temp_dir, 'foo', 'y = 6\\')
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rc, out, err = script_helper.assert_python_failure(file_name)
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self.assertIn(b'unexpected EOF while parsing', err)
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self.assertIn(b'line 2', err)
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self.assertIn(b'y = 6\\', err)
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if __name__ == "__main__":
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unittest.main()
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