/tests/regressiontests/templates/parser.py
Python | 83 lines | 72 code | 6 blank | 5 comment | 0 complexity | 672d47061bf0a01c7d4838030227642b MD5 | raw file
Possible License(s): BSD-3-Clause
- """
- Testing some internals of the template processing. These are *not* examples to be copied in user code.
- """
- from django.template import (TokenParser, FilterExpression, Parser, Variable,
- TemplateSyntaxError)
- from django.utils.unittest import TestCase
- class ParserTests(TestCase):
- def test_token_parsing(self):
- # Tests for TokenParser behavior in the face of quoted strings with
- # spaces.
- p = TokenParser("tag thevar|filter sometag")
- self.assertEqual(p.tagname, "tag")
- self.assertEqual(p.value(), "thevar|filter")
- self.assertTrue(p.more())
- self.assertEqual(p.tag(), "sometag")
- self.assertFalse(p.more())
- p = TokenParser('tag "a value"|filter sometag')
- self.assertEqual(p.tagname, "tag")
- self.assertEqual(p.value(), '"a value"|filter')
- self.assertTrue(p.more())
- self.assertEqual(p.tag(), "sometag")
- self.assertFalse(p.more())
- p = TokenParser("tag 'a value'|filter sometag")
- self.assertEqual(p.tagname, "tag")
- self.assertEqual(p.value(), "'a value'|filter")
- self.assertTrue(p.more())
- self.assertEqual(p.tag(), "sometag")
- self.assertFalse(p.more())
- def test_filter_parsing(self):
- c = {"article": {"section": u"News"}}
- p = Parser("")
- def fe_test(s, val):
- self.assertEqual(FilterExpression(s, p).resolve(c), val)
- fe_test("article.section", u"News")
- fe_test("article.section|upper", u"NEWS")
- fe_test(u'"News"', u"News")
- fe_test(u"'News'", u"News")
- fe_test(ur'"Some \"Good\" News"', u'Some "Good" News')
- fe_test(ur'"Some \"Good\" News"', u'Some "Good" News')
- fe_test(ur"'Some \'Bad\' News'", u"Some 'Bad' News")
- fe = FilterExpression(ur'"Some \"Good\" News"', p)
- self.assertEqual(fe.filters, [])
- self.assertEqual(fe.var, u'Some "Good" News')
- # Filtered variables should reject access of attributes beginning with
- # underscores.
- self.assertRaises(TemplateSyntaxError,
- FilterExpression, "article._hidden|upper", p
- )
- def test_variable_parsing(self):
- c = {"article": {"section": u"News"}}
- self.assertEqual(Variable("article.section").resolve(c), "News")
- self.assertEqual(Variable(u'"News"').resolve(c), "News")
- self.assertEqual(Variable(u"'News'").resolve(c), "News")
- # Translated strings are handled correctly.
- self.assertEqual(Variable("_(article.section)").resolve(c), "News")
- self.assertEqual(Variable('_("Good News")').resolve(c), "Good News")
- self.assertEqual(Variable("_('Better News')").resolve(c), "Better News")
- # Escaped quotes work correctly as well.
- self.assertEqual(
- Variable(ur'"Some \"Good\" News"').resolve(c), 'Some "Good" News'
- )
- self.assertEqual(
- Variable(ur"'Some \'Better\' News'").resolve(c), "Some 'Better' News"
- )
- # Variables should reject access of attributes beginning with
- # underscores.
- self.assertRaises(TemplateSyntaxError,
- Variable, "article._hidden"
- )