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83 lines
2.8 KiB
Python
83 lines
2.8 KiB
Python
from django.template import Context, Template, Variable, VariableDoesNotExist
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from django.template.base import DebugLexer, Lexer, TokenType
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from django.test import SimpleTestCase
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from django.utils.translation import gettext_lazy
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class LexerTestMixin:
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template_string = (
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'text\n'
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'{% if test %}{{ varvalue }}{% endif %}'
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'{#comment {{not a var}} %{not a block}% #}'
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'end text'
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)
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expected_token_tuples = [
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# (token_type, contents, lineno, position)
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(TokenType.TEXT, 'text\n', 1, (0, 5)),
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(TokenType.BLOCK, 'if test', 2, (5, 18)),
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(TokenType.VAR, 'varvalue', 2, (18, 32)),
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(TokenType.BLOCK, 'endif', 2, (32, 43)),
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(TokenType.COMMENT, 'comment {{not a var}} %{not a block}%', 2, (43, 85)),
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(TokenType.TEXT, 'end text', 2, (85, 93)),
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]
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def test_tokenize(self):
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tokens = self.lexer_class(self.template_string).tokenize()
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token_tuples = [(t.token_type, t.contents, t.lineno, t.position) for t in tokens]
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self.assertEqual(token_tuples, self.make_expected())
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def make_expected(self):
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raise NotImplementedError('This method must be implemented by a subclass.')
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class LexerTests(LexerTestMixin, SimpleTestCase):
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lexer_class = Lexer
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def make_expected(self):
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# The non-debug lexer does not record position.
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return [t[:-1] + (None,) for t in self.expected_token_tuples]
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class DebugLexerTests(LexerTestMixin, SimpleTestCase):
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lexer_class = DebugLexer
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def make_expected(self):
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return self.expected_token_tuples
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class TemplateTests(SimpleTestCase):
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def test_lazy_template_string(self):
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template_string = gettext_lazy('lazy string')
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self.assertEqual(Template(template_string).render(Context()), template_string)
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def test_repr(self):
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template = Template(
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'<html><body>\n'
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'{% if test %}<h1>{{ varvalue }}</h1>{% endif %}'
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'</body></html>'
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)
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self.assertEqual(
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repr(template),
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'<Template template_string="<html><body>{% if t...">',
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)
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class VariableDoesNotExistTests(SimpleTestCase):
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def test_str(self):
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exc = VariableDoesNotExist(msg='Failed lookup in %r', params=({'foo': 'bar'},))
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self.assertEqual(str(exc), "Failed lookup in {'foo': 'bar'}")
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class VariableTests(SimpleTestCase):
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def test_integer_literals(self):
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self.assertEqual(Variable('999999999999999999999999999').literal, 999999999999999999999999999)
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def test_nonliterals(self):
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"""Variable names that aren't resolved as literals."""
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var_names = []
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for var in ('inf', 'infinity', 'iNFiniTy', 'nan'):
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var_names.extend((var, '-' + var, '+' + var))
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for var in var_names:
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with self.subTest(var=var):
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self.assertIsNone(Variable(var).literal)
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