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import __future__
import unittest
class FLUFLTests(unittest.TestCase):
def test_barry_as_bdfl(self):
code = "from __future__ import barry_as_FLUFL\n2 {0} 3"
compile(code.format('<>'), '<BDFL test>', 'exec',
__future__.CO_FUTURE_BARRY_AS_BDFL)
with self.assertRaises(SyntaxError) as cm:
compile(code.format('!='), '<FLUFL test>', 'exec',
__future__.CO_FUTURE_BARRY_AS_BDFL)
self.assertRegex(str(cm.exception),
"with Barry as BDFL, use '<>' instead of '!='")
self.assertIn('2 != 3', cm.exception.text)
self.assertEqual(cm.exception.filename, '<FLUFL test>')
self.assertEqual(cm.exception.lineno, 2)
# The old parser reports the end of the token and the new
# parser reports the start of the token
self.assertEqual(cm.exception.offset, 3)
def test_guido_as_bdfl(self):
code = '2 {0} 3'
compile(code.format('!='), '<BDFL test>', 'exec')
with self.assertRaises(SyntaxError) as cm:
compile(code.format('<>'), '<FLUFL test>', 'exec')
self.assertRegex(str(cm.exception), "invalid syntax")
self.assertIn('2 <> 3', cm.exception.text)
self.assertEqual(cm.exception.filename, '<FLUFL test>')
self.assertEqual(cm.exception.lineno, 1)
# The old parser reports the end of the token and the new
# parser reports the start of the token
self.assertEqual(cm.exception.offset, 3)
def test_barry_as_bdfl_look_ma_with_no_compiler_flags(self):
# Check that the future import is handled by the parser
# even if the compiler flags are not passed.
code = "from __future__ import barry_as_FLUFL;2 {0} 3"
compile(code.format('<>'), '<BDFL test>', 'exec')
with self.assertRaises(SyntaxError) as cm:
compile(code.format('!='), '<FLUFL test>', 'exec')
self.assertRegex(str(cm.exception), "with Barry as BDFL, use '<>' instead of '!='")
self.assertIn('2 != 3', cm.exception.text)
self.assertEqual(cm.exception.filename, '<FLUFL test>')
self.assertEqual(cm.exception.lineno, 1)
self.assertEqual(cm.exception.offset, len(code) - 4)
def test_barry_as_bdfl_relative_import(self):
code = "from .__future__ import barry_as_FLUFL;2 {0} 3"
compile(code.format('!='), '<FLUFL test>', 'exec')
with self.assertRaises(SyntaxError) as cm:
compile(code.format('<>'), '<BDFL test>', 'exec')
self.assertRegex(str(cm.exception), "<BDFL test>")
self.assertIn('2 <> 3', cm.exception.text)
self.assertEqual(cm.exception.filename, '<BDFL test>')
self.assertEqual(cm.exception.lineno, 1)
self.assertEqual(cm.exception.offset, len(code) - 4)
if __name__ == '__main__':
unittest.main()
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