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from __future__ import unicode_literals
import unittest
from django.utils import regex_helper
class NormalizeTests(unittest.TestCase):
def test_empty(self):
pattern = r""
expected = [('', [])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_escape(self):
pattern = r"\\\^\$\.\|\?\*\+\(\)\["
expected = [('\\^$.|?*+()[', [])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_group_positional(self):
pattern = r"(.*)-(.+)"
expected = [('%(_0)s-%(_1)s', ['_0', '_1'])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_group_ignored(self):
pattern = r"(?i)(?L)(?m)(?s)(?u)(?#)"
expected = [('', [])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_group_noncapturing(self):
pattern = r"(?:non-capturing)"
expected = [('non-capturing', [])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_group_named(self):
pattern = r"(?P<first_group_name>.*)-(?P<second_group_name>.*)"
expected = [('%(first_group_name)s-%(second_group_name)s',
['first_group_name', 'second_group_name'])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
def test_group_backreference(self):
pattern = r"(?P<first_group_name>.*)-(?P=first_group_name)"
expected = [('%(first_group_name)s-%(first_group_name)s',
['first_group_name'])]
result = regex_helper.normalize(pattern)
self.assertEqual(result, expected)
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