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87 lines
2.9 KiB
Python
87 lines
2.9 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 = [
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(t.token_type, t.contents, t.lineno, t.position) for t in tokens
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]
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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(
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Variable("999999999999999999999999999").literal, 999999999999999999999999999
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)
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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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