mirror of https://github.com/django/django.git
151 lines
5.1 KiB
Python
151 lines
5.1 KiB
Python
"""
|
|
Testing some internals of the template processing.
|
|
These are *not* examples to be copied in user code.
|
|
"""
|
|
|
|
from django.template import Library, TemplateSyntaxError
|
|
from django.template.base import (
|
|
FilterExpression,
|
|
Lexer,
|
|
Parser,
|
|
Token,
|
|
TokenType,
|
|
Variable,
|
|
)
|
|
from django.template.defaultfilters import register as filter_library
|
|
from django.test import SimpleTestCase
|
|
|
|
|
|
class ParserTests(SimpleTestCase):
|
|
def test_token_smart_split(self):
|
|
"""
|
|
#7027 -- _() syntax should work with spaces
|
|
"""
|
|
token = Token(
|
|
TokenType.BLOCK, 'sometag _("Page not found") value|yesno:_("yes,no")'
|
|
)
|
|
split = token.split_contents()
|
|
self.assertEqual(
|
|
split, ["sometag", '_("Page not found")', 'value|yesno:_("yes,no")']
|
|
)
|
|
|
|
def test_repr(self):
|
|
token = Token(TokenType.BLOCK, "some text")
|
|
self.assertEqual(repr(token), '<Block token: "some text...">')
|
|
parser = Parser([token], builtins=[filter_library])
|
|
self.assertEqual(
|
|
repr(parser),
|
|
'<Parser tokens=[<Block token: "some text...">]>',
|
|
)
|
|
filter_expression = FilterExpression("news|upper", parser)
|
|
self.assertEqual(repr(filter_expression), "<FilterExpression 'news|upper'>")
|
|
lexer = Lexer("{% for i in 1 %}{{ a }}\n{% endfor %}")
|
|
self.assertEqual(
|
|
repr(lexer),
|
|
'<Lexer template_string="{% for i in 1 %}{{ a...", verbatim=False>',
|
|
)
|
|
|
|
def test_filter_parsing(self):
|
|
c = {"article": {"section": "News"}}
|
|
p = Parser("", builtins=[filter_library])
|
|
|
|
def fe_test(s, val):
|
|
self.assertEqual(FilterExpression(s, p).resolve(c), val)
|
|
|
|
fe_test("article.section", "News")
|
|
fe_test("article.section|upper", "NEWS")
|
|
fe_test('"News"', "News")
|
|
fe_test("'News'", "News")
|
|
fe_test(r'"Some \"Good\" News"', 'Some "Good" News')
|
|
fe_test(r'"Some \"Good\" News"', 'Some "Good" News')
|
|
fe_test(r"'Some \'Bad\' News'", "Some 'Bad' News")
|
|
|
|
fe = FilterExpression(r'"Some \"Good\" News"', p)
|
|
self.assertEqual(fe.filters, [])
|
|
self.assertEqual(fe.var, 'Some "Good" News')
|
|
|
|
# Filtered variables should reject access of attributes beginning with
|
|
# underscores.
|
|
msg = (
|
|
"Variables and attributes may not begin with underscores: 'article._hidden'"
|
|
)
|
|
with self.assertRaisesMessage(TemplateSyntaxError, msg):
|
|
FilterExpression("article._hidden|upper", p)
|
|
|
|
def test_variable_parsing(self):
|
|
c = {"article": {"section": "News"}}
|
|
self.assertEqual(Variable("article.section").resolve(c), "News")
|
|
self.assertEqual(Variable('"News"').resolve(c), "News")
|
|
self.assertEqual(Variable("'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(r'"Some \"Good\" News"').resolve(c), 'Some "Good" News'
|
|
)
|
|
self.assertEqual(
|
|
Variable(r"'Some \'Better\' News'").resolve(c), "Some 'Better' News"
|
|
)
|
|
|
|
# Variables should reject access of attributes and variables beginning
|
|
# with underscores.
|
|
for name in ["article._hidden", "_article"]:
|
|
msg = f"Variables and attributes may not begin with underscores: '{name}'"
|
|
with self.assertRaisesMessage(TemplateSyntaxError, msg):
|
|
Variable(name)
|
|
|
|
# Variables should raise on non string type
|
|
with self.assertRaisesMessage(
|
|
TypeError, "Variable must be a string or number, got <class 'dict'>"
|
|
):
|
|
Variable({})
|
|
|
|
def test_filter_args_count(self):
|
|
parser = Parser("")
|
|
register = Library()
|
|
|
|
@register.filter
|
|
def no_arguments(value):
|
|
pass
|
|
|
|
@register.filter
|
|
def one_argument(value, arg):
|
|
pass
|
|
|
|
@register.filter
|
|
def one_opt_argument(value, arg=False):
|
|
pass
|
|
|
|
@register.filter
|
|
def two_arguments(value, arg, arg2):
|
|
pass
|
|
|
|
@register.filter
|
|
def two_one_opt_arg(value, arg, arg2=False):
|
|
pass
|
|
|
|
parser.add_library(register)
|
|
for expr in (
|
|
'1|no_arguments:"1"',
|
|
"1|two_arguments",
|
|
'1|two_arguments:"1"',
|
|
"1|two_one_opt_arg",
|
|
):
|
|
with self.assertRaises(TemplateSyntaxError):
|
|
FilterExpression(expr, parser)
|
|
for expr in (
|
|
# Correct number of arguments
|
|
"1|no_arguments",
|
|
'1|one_argument:"1"',
|
|
# One optional
|
|
"1|one_opt_argument",
|
|
'1|one_opt_argument:"1"',
|
|
# Not supplying all
|
|
'1|two_one_opt_arg:"1"',
|
|
):
|
|
FilterExpression(expr, parser)
|