mirror of https://github.com/django/django.git
573 lines
23 KiB
Python
573 lines
23 KiB
Python
import os
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from django.template import Context, Engine, TemplateSyntaxError
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from django.template.base import Node
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from django.template.library import InvalidTemplateLibrary
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from django.test import SimpleTestCase
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from django.test.utils import extend_sys_path
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from .templatetags import custom, inclusion
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from .utils import ROOT
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LIBRARIES = {
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"custom": "template_tests.templatetags.custom",
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"inclusion": "template_tests.templatetags.inclusion",
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}
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class CustomFilterTests(SimpleTestCase):
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def test_filter(self):
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engine = Engine(libraries=LIBRARIES)
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t = engine.from_string("{% load custom %}{{ string|trim:5 }}")
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self.assertEqual(
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t.render(Context({"string": "abcdefghijklmnopqrstuvwxyz"})), "abcde"
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)
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def test_decorated_filter(self):
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engine = Engine(libraries=LIBRARIES)
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t = engine.from_string("{% load custom %}{{ name|make_data_div }}")
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self.assertEqual(
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t.render(Context({"name": "foo"})), '<div data-name="foo"></div>'
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)
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class TagTestCase(SimpleTestCase):
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@classmethod
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def setUpClass(cls):
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cls.engine = Engine(app_dirs=True, libraries=LIBRARIES)
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super().setUpClass()
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def verify_tag(self, tag, name):
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self.assertEqual(tag.__name__, name)
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self.assertEqual(tag.__doc__, "Expected %s __doc__" % name)
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self.assertEqual(tag.__dict__["anything"], "Expected %s __dict__" % name)
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class SimpleTagTests(TagTestCase):
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def test_simple_tags(self):
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c = Context({"value": 42})
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templates = [
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("{% load custom %}{% no_params %}", "no_params - Expected result"),
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("{% load custom %}{% one_param 37 %}", "one_param - Expected result: 37"),
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(
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"{% load custom %}{% explicit_no_context 37 %}",
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"explicit_no_context - Expected result: 37",
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),
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(
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"{% load custom %}{% no_params_with_context %}",
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"no_params_with_context - Expected result (context value: 42)",
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),
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(
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"{% load custom %}{% params_and_context 37 %}",
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"params_and_context - Expected result (context value: 42): 37",
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),
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(
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"{% load custom %}{% simple_two_params 37 42 %}",
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"simple_two_params - Expected result: 37, 42",
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),
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(
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"{% load custom %}{% simple_keyword_only_param kwarg=37 %}",
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"simple_keyword_only_param - Expected result: 37",
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),
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(
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"{% load custom %}{% simple_keyword_only_default %}",
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"simple_keyword_only_default - Expected result: 42",
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),
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(
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"{% load custom %}{% simple_keyword_only_default kwarg=37 %}",
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"simple_keyword_only_default - Expected result: 37",
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),
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(
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"{% load custom %}{% simple_one_default 37 %}",
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"simple_one_default - Expected result: 37, hi",
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),
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(
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'{% load custom %}{% simple_one_default 37 two="hello" %}',
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"simple_one_default - Expected result: 37, hello",
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),
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(
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'{% load custom %}{% simple_one_default one=99 two="hello" %}',
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"simple_one_default - Expected result: 99, hello",
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),
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(
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"{% load custom %}{% simple_one_default 37 42 %}",
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"simple_one_default - Expected result: 37, 42",
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),
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(
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"{% load custom %}{% simple_unlimited_args 37 %}",
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"simple_unlimited_args - Expected result: 37, hi",
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),
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(
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"{% load custom %}{% simple_unlimited_args 37 42 56 89 %}",
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"simple_unlimited_args - Expected result: 37, 42, 56, 89",
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),
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(
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"{% load custom %}{% simple_only_unlimited_args %}",
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"simple_only_unlimited_args - Expected result: ",
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),
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(
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"{% load custom %}{% simple_only_unlimited_args 37 42 56 89 %}",
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"simple_only_unlimited_args - Expected result: 37, 42, 56, 89",
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),
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(
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"{% load custom %}"
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'{% simple_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" '
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"four=1|add:3 %}",
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"simple_unlimited_args_kwargs - Expected result: 37, 42, 56 / "
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"eggs=scrambled, four=4",
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),
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]
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for entry in templates:
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t = self.engine.from_string(entry[0])
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self.assertEqual(t.render(c), entry[1])
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for entry in templates:
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t = self.engine.from_string(
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"%s as var %%}Result: {{ var }}" % entry[0][0:-2]
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)
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self.assertEqual(t.render(c), "Result: %s" % entry[1])
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def test_simple_tag_errors(self):
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errors = [
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(
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"'simple_one_default' received unexpected keyword argument 'three'",
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'{% load custom %}{% simple_one_default 99 two="hello" three="foo" %}',
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),
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(
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"'simple_two_params' received too many positional arguments",
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"{% load custom %}{% simple_two_params 37 42 56 %}",
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),
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(
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"'simple_one_default' received too many positional arguments",
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"{% load custom %}{% simple_one_default 37 42 56 %}",
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),
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(
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"'simple_keyword_only_param' did not receive value(s) for the "
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"argument(s): 'kwarg'",
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"{% load custom %}{% simple_keyword_only_param %}",
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),
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(
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"'simple_keyword_only_param' received multiple values for "
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"keyword argument 'kwarg'",
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"{% load custom %}{% simple_keyword_only_param kwarg=42 kwarg=37 %}",
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),
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(
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"'simple_keyword_only_default' received multiple values for "
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"keyword argument 'kwarg'",
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"{% load custom %}{% simple_keyword_only_default kwarg=42 "
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"kwarg=37 %}",
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),
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(
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"'simple_unlimited_args_kwargs' received some positional argument(s) "
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"after some keyword argument(s)",
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"{% load custom %}"
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"{% simple_unlimited_args_kwargs 37 40|add:2 "
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'eggs="scrambled" 56 four=1|add:3 %}',
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),
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(
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"'simple_unlimited_args_kwargs' received multiple values for keyword "
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"argument 'eggs'",
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"{% load custom %}"
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"{% simple_unlimited_args_kwargs 37 "
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'eggs="scrambled" eggs="scrambled" %}',
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),
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]
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for entry in errors:
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with self.assertRaisesMessage(TemplateSyntaxError, entry[0]):
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self.engine.from_string(entry[1])
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for entry in errors:
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with self.assertRaisesMessage(TemplateSyntaxError, entry[0]):
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self.engine.from_string("%s as var %%}" % entry[1][0:-2])
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def test_simple_tag_escaping_autoescape_off(self):
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c = Context({"name": "Jack & Jill"}, autoescape=False)
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t = self.engine.from_string("{% load custom %}{% escape_naive %}")
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self.assertEqual(t.render(c), "Hello Jack & Jill!")
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def test_simple_tag_naive_escaping(self):
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c = Context({"name": "Jack & Jill"})
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t = self.engine.from_string("{% load custom %}{% escape_naive %}")
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self.assertEqual(t.render(c), "Hello Jack & Jill!")
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def test_simple_tag_explicit_escaping(self):
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# Check we don't double escape
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c = Context({"name": "Jack & Jill"})
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t = self.engine.from_string("{% load custom %}{% escape_explicit %}")
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self.assertEqual(t.render(c), "Hello Jack & Jill!")
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def test_simple_tag_format_html_escaping(self):
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# Check we don't double escape
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c = Context({"name": "Jack & Jill"})
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t = self.engine.from_string("{% load custom %}{% escape_format_html %}")
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self.assertEqual(t.render(c), "Hello Jack & Jill!")
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def test_simple_tag_registration(self):
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# The decorators preserve the decorated function's docstring, name,
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# and attributes.
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self.verify_tag(custom.no_params, "no_params")
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self.verify_tag(custom.one_param, "one_param")
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self.verify_tag(custom.explicit_no_context, "explicit_no_context")
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self.verify_tag(custom.no_params_with_context, "no_params_with_context")
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self.verify_tag(custom.params_and_context, "params_and_context")
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self.verify_tag(
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custom.simple_unlimited_args_kwargs, "simple_unlimited_args_kwargs"
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)
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self.verify_tag(
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custom.simple_tag_without_context_parameter,
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"simple_tag_without_context_parameter",
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)
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def test_simple_tag_missing_context(self):
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# The 'context' parameter must be present when takes_context is True
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msg = (
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"'simple_tag_without_context_parameter' is decorated with "
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"takes_context=True so it must have a first argument of 'context'"
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)
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.from_string(
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"{% load custom %}{% simple_tag_without_context_parameter 123 %}"
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)
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def test_simple_tag_missing_context_no_params(self):
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msg = (
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"'simple_tag_takes_context_without_params' is decorated with "
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"takes_context=True so it must have a first argument of 'context'"
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)
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.from_string(
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"{% load custom %}{% simple_tag_takes_context_without_params %}"
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)
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class InclusionTagTests(TagTestCase):
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def test_inclusion_tags(self):
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c = Context({"value": 42})
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templates = [
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(
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"{% load inclusion %}{% inclusion_no_params %}",
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"inclusion_no_params - Expected result\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_param 37 %}",
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"inclusion_one_param - Expected result: 37\n",
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),
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(
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"{% load inclusion %}{% inclusion_explicit_no_context 37 %}",
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"inclusion_explicit_no_context - Expected result: 37\n",
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),
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(
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"{% load inclusion %}{% inclusion_no_params_with_context %}",
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"inclusion_no_params_with_context - Expected result (context value: "
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"42)\n",
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),
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(
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"{% load inclusion %}{% inclusion_params_and_context 37 %}",
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"inclusion_params_and_context - Expected result (context value: 42): "
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"37\n",
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),
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(
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"{% load inclusion %}{% inclusion_two_params 37 42 %}",
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"inclusion_two_params - Expected result: 37, 42\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_default 37 %}",
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"inclusion_one_default - Expected result: 37, hi\n",
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),
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(
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'{% load inclusion %}{% inclusion_one_default 37 two="hello" %}',
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"inclusion_one_default - Expected result: 37, hello\n",
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),
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(
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'{% load inclusion %}{% inclusion_one_default one=99 two="hello" %}',
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"inclusion_one_default - Expected result: 99, hello\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_default 37 42 %}",
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"inclusion_one_default - Expected result: 37, 42\n",
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),
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(
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"{% load inclusion %}{% inclusion_keyword_only_default kwarg=37 %}",
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"inclusion_keyword_only_default - Expected result: 37\n",
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),
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(
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"{% load inclusion %}{% inclusion_unlimited_args 37 %}",
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"inclusion_unlimited_args - Expected result: 37, hi\n",
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),
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(
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"{% load inclusion %}{% inclusion_unlimited_args 37 42 56 89 %}",
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"inclusion_unlimited_args - Expected result: 37, 42, 56, 89\n",
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),
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(
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"{% load inclusion %}{% inclusion_only_unlimited_args %}",
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"inclusion_only_unlimited_args - Expected result: \n",
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),
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(
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"{% load inclusion %}{% inclusion_only_unlimited_args 37 42 56 89 %}",
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"inclusion_only_unlimited_args - Expected result: 37, 42, 56, 89\n",
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),
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(
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"{% load inclusion %}"
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'{% inclusion_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" '
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"four=1|add:3 %}",
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"inclusion_unlimited_args_kwargs - Expected result: 37, 42, 56 / "
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"eggs=scrambled, four=4\n",
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),
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]
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for entry in templates:
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t = self.engine.from_string(entry[0])
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self.assertEqual(t.render(c), entry[1])
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def test_inclusion_tag_errors(self):
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errors = [
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(
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"'inclusion_one_default' received unexpected keyword argument 'three'",
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"{% load inclusion %}"
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'{% inclusion_one_default 99 two="hello" three="foo" %}',
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),
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(
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"'inclusion_two_params' received too many positional arguments",
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"{% load inclusion %}{% inclusion_two_params 37 42 56 %}",
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),
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(
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"'inclusion_one_default' received too many positional arguments",
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"{% load inclusion %}{% inclusion_one_default 37 42 56 %}",
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),
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(
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"'inclusion_one_default' did not receive value(s) for the argument(s): "
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"'one'",
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"{% load inclusion %}{% inclusion_one_default %}",
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),
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(
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"'inclusion_keyword_only_default' received multiple values "
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"for keyword argument 'kwarg'",
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"{% load inclusion %}{% inclusion_keyword_only_default "
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"kwarg=37 kwarg=42 %}",
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),
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(
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"'inclusion_unlimited_args' did not receive value(s) for the "
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"argument(s): 'one'",
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"{% load inclusion %}{% inclusion_unlimited_args %}",
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),
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(
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"'inclusion_unlimited_args_kwargs' received some positional "
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"argument(s) after some keyword argument(s)",
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"{% load inclusion %}"
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"{% inclusion_unlimited_args_kwargs 37 40|add:2 "
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'eggs="boiled" 56 four=1|add:3 %}',
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),
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(
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"'inclusion_unlimited_args_kwargs' received multiple values for "
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"keyword argument 'eggs'",
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"{% load inclusion %}"
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"{% inclusion_unlimited_args_kwargs 37 "
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'eggs="scrambled" eggs="scrambled" %}',
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),
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]
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for entry in errors:
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with self.assertRaisesMessage(TemplateSyntaxError, entry[0]):
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self.engine.from_string(entry[1])
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def test_include_tag_missing_context(self):
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# The 'context' parameter must be present when takes_context is True
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msg = (
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"'inclusion_tag_without_context_parameter' is decorated with "
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"takes_context=True so it must have a first argument of 'context'"
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)
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.from_string(
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"{% load inclusion %}{% inclusion_tag_without_context_parameter 123 %}"
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)
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def test_include_tag_missing_context_no_params(self):
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msg = (
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"'inclusion_tag_takes_context_without_params' is decorated with "
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"takes_context=True so it must have a first argument of 'context'"
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)
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with self.assertRaisesMessage(TemplateSyntaxError, msg):
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self.engine.from_string(
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"{% load inclusion %}{% inclusion_tag_takes_context_without_params %}"
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)
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def test_inclusion_tags_from_template(self):
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c = Context({"value": 42})
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templates = [
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(
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"{% load inclusion %}{% inclusion_no_params_from_template %}",
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"inclusion_no_params_from_template - Expected result\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_param_from_template 37 %}",
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"inclusion_one_param_from_template - Expected result: 37\n",
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),
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(
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"{% load inclusion %}"
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"{% inclusion_explicit_no_context_from_template 37 %}",
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"inclusion_explicit_no_context_from_template - Expected result: 37\n",
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),
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(
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"{% load inclusion %}"
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"{% inclusion_no_params_with_context_from_template %}",
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"inclusion_no_params_with_context_from_template - Expected result "
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"(context value: 42)\n",
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),
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(
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"{% load inclusion %}"
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"{% inclusion_params_and_context_from_template 37 %}",
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"inclusion_params_and_context_from_template - Expected result (context "
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"value: 42): 37\n",
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),
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(
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"{% load inclusion %}{% inclusion_two_params_from_template 37 42 %}",
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"inclusion_two_params_from_template - Expected result: 37, 42\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_default_from_template 37 %}",
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"inclusion_one_default_from_template - Expected result: 37, hi\n",
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),
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(
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"{% load inclusion %}{% inclusion_one_default_from_template 37 42 %}",
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"inclusion_one_default_from_template - Expected result: 37, 42\n",
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),
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(
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"{% load inclusion %}{% inclusion_unlimited_args_from_template 37 %}",
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"inclusion_unlimited_args_from_template - Expected result: 37, hi\n",
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),
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(
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"{% load inclusion %}"
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"{% inclusion_unlimited_args_from_template 37 42 56 89 %}",
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"inclusion_unlimited_args_from_template - Expected result: 37, 42, 56, "
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"89\n",
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),
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(
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"{% load inclusion %}{% inclusion_only_unlimited_args_from_template %}",
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"inclusion_only_unlimited_args_from_template - Expected result: \n",
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),
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(
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"{% load inclusion %}"
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"{% inclusion_only_unlimited_args_from_template 37 42 56 89 %}",
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"inclusion_only_unlimited_args_from_template - Expected result: 37, "
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"42, 56, 89\n",
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),
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]
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for entry in templates:
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t = self.engine.from_string(entry[0])
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self.assertEqual(t.render(c), entry[1])
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def test_inclusion_tag_registration(self):
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# The decorators preserve the decorated function's docstring, name,
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# and attributes.
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self.verify_tag(inclusion.inclusion_no_params, "inclusion_no_params")
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self.verify_tag(inclusion.inclusion_one_param, "inclusion_one_param")
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self.verify_tag(
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inclusion.inclusion_explicit_no_context, "inclusion_explicit_no_context"
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)
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self.verify_tag(
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inclusion.inclusion_no_params_with_context,
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"inclusion_no_params_with_context",
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)
|
|
self.verify_tag(
|
|
inclusion.inclusion_params_and_context, "inclusion_params_and_context"
|
|
)
|
|
self.verify_tag(inclusion.inclusion_two_params, "inclusion_two_params")
|
|
self.verify_tag(inclusion.inclusion_one_default, "inclusion_one_default")
|
|
self.verify_tag(inclusion.inclusion_unlimited_args, "inclusion_unlimited_args")
|
|
self.verify_tag(
|
|
inclusion.inclusion_only_unlimited_args, "inclusion_only_unlimited_args"
|
|
)
|
|
self.verify_tag(
|
|
inclusion.inclusion_tag_without_context_parameter,
|
|
"inclusion_tag_without_context_parameter",
|
|
)
|
|
self.verify_tag(inclusion.inclusion_tag_use_l10n, "inclusion_tag_use_l10n")
|
|
self.verify_tag(
|
|
inclusion.inclusion_unlimited_args_kwargs, "inclusion_unlimited_args_kwargs"
|
|
)
|
|
|
|
def test_15070_use_l10n(self):
|
|
"""
|
|
Inclusion tag passes down `use_l10n` of context to the
|
|
Context of the included/rendered template as well.
|
|
"""
|
|
c = Context({})
|
|
t = self.engine.from_string("{% load inclusion %}{% inclusion_tag_use_l10n %}")
|
|
self.assertEqual(t.render(c).strip(), "None")
|
|
|
|
c.use_l10n = True
|
|
self.assertEqual(t.render(c).strip(), "True")
|
|
|
|
def test_no_render_side_effect(self):
|
|
"""
|
|
#23441 -- InclusionNode shouldn't modify its nodelist at render time.
|
|
"""
|
|
engine = Engine(app_dirs=True, libraries=LIBRARIES)
|
|
template = engine.from_string("{% load inclusion %}{% inclusion_no_params %}")
|
|
count = template.nodelist.get_nodes_by_type(Node)
|
|
template.render(Context({}))
|
|
self.assertEqual(template.nodelist.get_nodes_by_type(Node), count)
|
|
|
|
def test_render_context_is_cleared(self):
|
|
"""
|
|
#24555 -- InclusionNode should push and pop the render_context stack
|
|
when rendering. Otherwise, leftover values such as blocks from
|
|
extending can interfere with subsequent rendering.
|
|
"""
|
|
engine = Engine(app_dirs=True, libraries=LIBRARIES)
|
|
template = engine.from_string(
|
|
"{% load inclusion %}{% inclusion_extends1 %}{% inclusion_extends2 %}"
|
|
)
|
|
self.assertEqual(template.render(Context({})).strip(), "one\ntwo")
|
|
|
|
|
|
class TemplateTagLoadingTests(SimpleTestCase):
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
cls.egg_dir = os.path.join(ROOT, "eggs")
|
|
super().setUpClass()
|
|
|
|
def test_load_error(self):
|
|
msg = (
|
|
"Invalid template library specified. ImportError raised when "
|
|
"trying to load 'template_tests.broken_tag': cannot import name "
|
|
"'Xtemplate'"
|
|
)
|
|
with self.assertRaisesMessage(InvalidTemplateLibrary, msg):
|
|
Engine(libraries={"broken_tag": "template_tests.broken_tag"})
|
|
|
|
def test_load_error_egg(self):
|
|
egg_name = "%s/tagsegg.egg" % self.egg_dir
|
|
msg = (
|
|
"Invalid template library specified. ImportError raised when "
|
|
"trying to load 'tagsegg.templatetags.broken_egg': cannot "
|
|
"import name 'Xtemplate'"
|
|
)
|
|
with extend_sys_path(egg_name):
|
|
with self.assertRaisesMessage(InvalidTemplateLibrary, msg):
|
|
Engine(libraries={"broken_egg": "tagsegg.templatetags.broken_egg"})
|
|
|
|
def test_load_working_egg(self):
|
|
ttext = "{% load working_egg %}"
|
|
egg_name = "%s/tagsegg.egg" % self.egg_dir
|
|
with extend_sys_path(egg_name):
|
|
engine = Engine(
|
|
libraries={
|
|
"working_egg": "tagsegg.templatetags.working_egg",
|
|
}
|
|
)
|
|
engine.from_string(ttext)
|
|
|
|
def test_load_annotated_function(self):
|
|
Engine(
|
|
libraries={
|
|
"annotated_tag_function": "template_tests.annotated_tag_function",
|
|
}
|
|
)
|