mirror of
https://github.com/django/django.git
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349 lines
18 KiB
Python
349 lines
18 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"})),
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"abcde"
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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(TagTestCase, cls).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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('{% load custom %}{% explicit_no_context 37 %}', 'explicit_no_context - Expected result: 37'),
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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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('{% load custom %}{% params_and_context 37 %}',
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'params_and_context - Expected result (context value: 42): 37'),
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('{% load custom %}{% simple_two_params 37 42 %}', 'simple_two_params - Expected result: 37, 42'),
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('{% load custom %}{% simple_one_default 37 %}', 'simple_one_default - Expected result: 37, hi'),
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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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('{% load custom %}{% simple_one_default one=99 two="hello" %}',
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'simple_one_default - Expected result: 99, hello'),
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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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('{% load custom %}{% simple_unlimited_args 37 %}', 'simple_unlimited_args - Expected result: 37, hi'),
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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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('{% load custom %}{% simple_only_unlimited_args %}', 'simple_only_unlimited_args - Expected result: '),
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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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('{% load custom %}{% simple_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" four=1|add:3 %}',
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'simple_unlimited_args_kwargs - Expected result: 37, 42, 56 / eggs=scrambled, four=4'),
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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("%s as var %%}Result: {{ var }}" % entry[0][0:-2])
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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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("'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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("'simple_two_params' received too many positional arguments",
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'{% load custom %}{% simple_two_params 37 42 56 %}'),
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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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("'simple_unlimited_args_kwargs' received some positional argument(s) after some keyword argument(s)",
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'{% load custom %}{% simple_unlimited_args_kwargs 37 40|add:2 eggs="scrambled" 56 four=1|add:3 %}'),
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("'simple_unlimited_args_kwargs' received multiple values for keyword argument 'eggs'",
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'{% load custom %}{% simple_unlimited_args_kwargs 37 eggs="scrambled" eggs="scrambled" %}'),
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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(custom.simple_unlimited_args_kwargs, 'simple_unlimited_args_kwargs')
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self.verify_tag(custom.simple_tag_without_context_parameter, 'simple_tag_without_context_parameter')
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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('{% load custom %}{% simple_tag_without_context_parameter 123 %}')
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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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('{% load inclusion %}{% inclusion_no_params %}', 'inclusion_no_params - Expected result\n'),
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('{% load inclusion %}{% inclusion_one_param 37 %}', 'inclusion_one_param - Expected result: 37\n'),
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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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('{% load inclusion %}{% inclusion_no_params_with_context %}',
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'inclusion_no_params_with_context - Expected result (context value: 42)\n'),
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('{% load inclusion %}{% inclusion_params_and_context 37 %}',
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'inclusion_params_and_context - Expected result (context value: 42): 37\n'),
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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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'{% 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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('{% load inclusion %}{% inclusion_one_default 37 two="hello" %}',
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'inclusion_one_default - Expected result: 37, hello\n'),
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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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('{% load inclusion %}{% inclusion_one_default 37 42 %}',
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'inclusion_one_default - Expected result: 37, 42\n'),
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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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('{% 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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('{% load inclusion %}{% inclusion_only_unlimited_args %}',
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'inclusion_only_unlimited_args - Expected result: \n'),
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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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('{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" four=1|add:3 %}',
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'inclusion_unlimited_args_kwargs - Expected result: 37, 42, 56 / eggs=scrambled, four=4\n'),
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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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("'inclusion_one_default' received unexpected keyword argument 'three'",
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'{% load inclusion %}{% inclusion_one_default 99 two="hello" three="foo" %}'),
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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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("'inclusion_one_default' received too many positional arguments",
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'{% load inclusion %}{% inclusion_one_default 37 42 56 %}'),
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("'inclusion_one_default' did not receive value(s) for the argument(s): 'one'",
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'{% load inclusion %}{% inclusion_one_default %}'),
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("'inclusion_unlimited_args' did not receive value(s) for the argument(s): 'one'",
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'{% load inclusion %}{% inclusion_unlimited_args %}'),
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(
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"'inclusion_unlimited_args_kwargs' received some positional argument(s) "
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"after some keyword argument(s)",
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'{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 40|add:2 eggs="boiled" 56 four=1|add:3 %}',
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),
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("'inclusion_unlimited_args_kwargs' received multiple values for keyword argument 'eggs'",
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'{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 eggs="scrambled" eggs="scrambled" %}'),
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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('{% load inclusion %}{% inclusion_tag_without_context_parameter 123 %}')
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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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('{% load inclusion %}{% inclusion_no_params_from_template %}',
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'inclusion_no_params_from_template - Expected result\n'),
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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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('{% load inclusion %}{% 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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('{% load inclusion %}{% inclusion_no_params_with_context_from_template %}',
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'inclusion_no_params_with_context_from_template - Expected result (context value: 42)\n'),
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('{% load inclusion %}{% inclusion_params_and_context_from_template 37 %}',
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'inclusion_params_and_context_from_template - Expected result (context value: 42): 37\n'),
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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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('{% 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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('{% 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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('{% 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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('{% load inclusion %}{% inclusion_unlimited_args_from_template 37 42 56 89 %}',
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'inclusion_unlimited_args_from_template - Expected result: 37, 42, 56, 89\n'),
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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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('{% load inclusion %}{% inclusion_only_unlimited_args_from_template 37 42 56 89 %}',
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'inclusion_only_unlimited_args_from_template - Expected result: 37, 42, 56, 89\n'),
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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(inclusion.inclusion_explicit_no_context, 'inclusion_explicit_no_context')
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self.verify_tag(inclusion.inclusion_no_params_with_context, 'inclusion_no_params_with_context')
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self.verify_tag(inclusion.inclusion_params_and_context, 'inclusion_params_and_context')
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self.verify_tag(inclusion.inclusion_two_params, 'inclusion_two_params')
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self.verify_tag(inclusion.inclusion_one_default, 'inclusion_one_default')
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self.verify_tag(inclusion.inclusion_unlimited_args, 'inclusion_unlimited_args')
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self.verify_tag(inclusion.inclusion_only_unlimited_args, 'inclusion_only_unlimited_args')
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self.verify_tag(inclusion.inclusion_tag_without_context_parameter, 'inclusion_tag_without_context_parameter')
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self.verify_tag(inclusion.inclusion_tag_use_l10n, 'inclusion_tag_use_l10n')
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self.verify_tag(inclusion.inclusion_unlimited_args_kwargs, 'inclusion_unlimited_args_kwargs')
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def test_15070_use_l10n(self):
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"""
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Inclusion tag passes down `use_l10n` of context to the
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Context of the included/rendered template as well.
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"""
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c = Context({})
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t = self.engine.from_string('{% load inclusion %}{% inclusion_tag_use_l10n %}')
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self.assertEqual(t.render(c).strip(), 'None')
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c.use_l10n = True
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self.assertEqual(t.render(c).strip(), 'True')
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def test_no_render_side_effect(self):
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"""
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#23441 -- InclusionNode shouldn't modify its nodelist at render time.
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"""
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engine = Engine(app_dirs=True, libraries=LIBRARIES)
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template = engine.from_string('{% load inclusion %}{% inclusion_no_params %}')
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count = template.nodelist.get_nodes_by_type(Node)
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template.render(Context({}))
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self.assertEqual(template.nodelist.get_nodes_by_type(Node), count)
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def test_render_context_is_cleared(self):
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"""
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#24555 -- InclusionNode should push and pop the render_context stack
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when rendering. Otherwise, leftover values such as blocks from
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extending can interfere with subsequent rendering.
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"""
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engine = Engine(app_dirs=True, libraries=LIBRARIES)
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template = engine.from_string('{% load inclusion %}{% inclusion_extends1 %}{% inclusion_extends2 %}')
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self.assertEqual(template.render(Context({})).strip(), 'one\ntwo')
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class TemplateTagLoadingTests(SimpleTestCase):
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@classmethod
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def setUpClass(cls):
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cls.egg_dir = os.path.join(ROOT, 'eggs')
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super(TemplateTagLoadingTests, cls).setUpClass()
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def test_load_error(self):
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msg = (
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"Invalid template library specified. ImportError raised when "
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"trying to load 'template_tests.broken_tag': cannot import name "
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"'?Xtemplate'?"
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)
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with self.assertRaisesRegex(InvalidTemplateLibrary, msg):
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Engine(libraries={
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'broken_tag': 'template_tests.broken_tag',
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})
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def test_load_error_egg(self):
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egg_name = '%s/tagsegg.egg' % self.egg_dir
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msg = (
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"Invalid template library specified. ImportError raised when "
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"trying to load 'tagsegg.templatetags.broken_egg': cannot "
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"import name '?Xtemplate'?"
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)
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with extend_sys_path(egg_name):
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with self.assertRaisesRegex(InvalidTemplateLibrary, msg):
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Engine(libraries={
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'broken_egg': 'tagsegg.templatetags.broken_egg',
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})
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def test_load_working_egg(self):
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ttext = "{% load working_egg %}"
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egg_name = '%s/tagsegg.egg' % self.egg_dir
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with extend_sys_path(egg_name):
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engine = Engine(libraries={
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'working_egg': 'tagsegg.templatetags.working_egg',
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})
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engine.from_string(ttext)
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def test_load_annotated_function(self):
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Engine(libraries={
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'annotated_tag_function': 'template_tests.annotated_tag_function',
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})
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