86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
"""
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Testing some internals of the template processing. These are *not* examples to be copied in user code.
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"""
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from __future__ import unicode_literals
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from django.template import (TokenParser, FilterExpression, Parser, Variable,
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TemplateSyntaxError)
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from django.utils.unittest import TestCase
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class ParserTests(TestCase):
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def test_token_parsing(self):
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# Tests for TokenParser behavior in the face of quoted strings with
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# spaces.
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p = TokenParser("tag thevar|filter sometag")
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self.assertEqual(p.tagname, "tag")
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self.assertEqual(p.value(), "thevar|filter")
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self.assertTrue(p.more())
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self.assertEqual(p.tag(), "sometag")
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self.assertFalse(p.more())
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p = TokenParser('tag "a value"|filter sometag')
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self.assertEqual(p.tagname, "tag")
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self.assertEqual(p.value(), '"a value"|filter')
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self.assertTrue(p.more())
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self.assertEqual(p.tag(), "sometag")
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self.assertFalse(p.more())
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p = TokenParser("tag 'a value'|filter sometag")
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self.assertEqual(p.tagname, "tag")
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self.assertEqual(p.value(), "'a value'|filter")
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self.assertTrue(p.more())
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self.assertEqual(p.tag(), "sometag")
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self.assertFalse(p.more())
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def test_filter_parsing(self):
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c = {"article": {"section": "News"}}
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p = Parser("")
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def fe_test(s, val):
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self.assertEqual(FilterExpression(s, p).resolve(c), val)
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fe_test("article.section", "News")
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fe_test("article.section|upper", "NEWS")
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fe_test('"News"', "News")
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fe_test("'News'", "News")
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fe_test(r'"Some \"Good\" News"', 'Some "Good" News')
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fe_test(r'"Some \"Good\" News"', 'Some "Good" News')
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fe_test(r"'Some \'Bad\' News'", "Some 'Bad' News")
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fe = FilterExpression(r'"Some \"Good\" News"', p)
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self.assertEqual(fe.filters, [])
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self.assertEqual(fe.var, 'Some "Good" News')
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# Filtered variables should reject access of attributes beginning with
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# underscores.
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self.assertRaises(TemplateSyntaxError,
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FilterExpression, "article._hidden|upper", p
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)
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def test_variable_parsing(self):
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c = {"article": {"section": "News"}}
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self.assertEqual(Variable("article.section").resolve(c), "News")
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self.assertEqual(Variable('"News"').resolve(c), "News")
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self.assertEqual(Variable("'News'").resolve(c), "News")
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# Translated strings are handled correctly.
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self.assertEqual(Variable("_(article.section)").resolve(c), "News")
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self.assertEqual(Variable('_("Good News")').resolve(c), "Good News")
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self.assertEqual(Variable("_('Better News')").resolve(c), "Better News")
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# Escaped quotes work correctly as well.
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self.assertEqual(
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Variable(r'"Some \"Good\" News"').resolve(c), 'Some "Good" News'
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)
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self.assertEqual(
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Variable(r"'Some \'Better\' News'").resolve(c), "Some 'Better' News"
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)
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# Variables should reject access of attributes beginning with
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# underscores.
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self.assertRaises(TemplateSyntaxError,
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Variable, "article._hidden"
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)
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