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from __future__ import unicode_literals
import os
from django.template import Context, Engine, Template, TemplateSyntaxError
from django.template.base import Node
from django.test import SimpleTestCase, ignore_warnings
from django.test.utils import extend_sys_path
from django.utils import six
from django.utils.deprecation import RemovedInDjango110Warning
from .templatetags import custom, inclusion
from .utils import ROOT
class CustomFilterTests(SimpleTestCase):
def test_filter(self):
t = Template("{% load custom %}{{ string|trim:5 }}")
self.assertEqual(
t.render(Context({"string": "abcdefghijklmnopqrstuvwxyz"})),
"abcde"
)
class CustomTagTests(SimpleTestCase):
def verify_tag(self, tag, name):
self.assertEqual(tag.__name__, name)
self.assertEqual(tag.__doc__, 'Expected %s __doc__' % name)
self.assertEqual(tag.__dict__['anything'], 'Expected %s __dict__' % name)
def test_simple_tags(self):
c = Context({'value': 42})
t = Template('{% load custom %}{% no_params %}')
self.assertEqual(t.render(c), 'no_params - Expected result')
t = Template('{% load custom %}{% one_param 37 %}')
self.assertEqual(t.render(c), 'one_param - Expected result: 37')
t = Template('{% load custom %}{% explicit_no_context 37 %}')
self.assertEqual(t.render(c), 'explicit_no_context - Expected result: 37')
t = Template('{% load custom %}{% no_params_with_context %}')
self.assertEqual(t.render(c), 'no_params_with_context - Expected result (context value: 42)')
t = Template('{% load custom %}{% params_and_context 37 %}')
self.assertEqual(t.render(c), 'params_and_context - Expected result (context value: 42): 37')
t = Template('{% load custom %}{% simple_two_params 37 42 %}')
self.assertEqual(t.render(c), 'simple_two_params - Expected result: 37, 42')
t = Template('{% load custom %}{% simple_one_default 37 %}')
self.assertEqual(t.render(c), 'simple_one_default - Expected result: 37, hi')
t = Template('{% load custom %}{% simple_one_default 37 two="hello" %}')
self.assertEqual(t.render(c), 'simple_one_default - Expected result: 37, hello')
t = Template('{% load custom %}{% simple_one_default one=99 two="hello" %}')
self.assertEqual(t.render(c), 'simple_one_default - Expected result: 99, hello')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_one_default' received unexpected keyword argument 'three'",
Template, '{% load custom %}{% simple_one_default 99 two="hello" three="foo" %}')
t = Template('{% load custom %}{% simple_one_default 37 42 %}')
self.assertEqual(t.render(c), 'simple_one_default - Expected result: 37, 42')
t = Template('{% load custom %}{% simple_unlimited_args 37 %}')
self.assertEqual(t.render(c), 'simple_unlimited_args - Expected result: 37, hi')
t = Template('{% load custom %}{% simple_unlimited_args 37 42 56 89 %}')
self.assertEqual(t.render(c), 'simple_unlimited_args - Expected result: 37, 42, 56, 89')
t = Template('{% load custom %}{% simple_only_unlimited_args %}')
self.assertEqual(t.render(c), 'simple_only_unlimited_args - Expected result: ')
t = Template('{% load custom %}{% simple_only_unlimited_args 37 42 56 89 %}')
self.assertEqual(t.render(c), 'simple_only_unlimited_args - Expected result: 37, 42, 56, 89')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_two_params' received too many positional arguments",
Template, '{% load custom %}{% simple_two_params 37 42 56 %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_one_default' received too many positional arguments",
Template, '{% load custom %}{% simple_one_default 37 42 56 %}')
t = Template('{% load custom %}{% simple_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" four=1|add:3 %}')
self.assertEqual(t.render(c), 'simple_unlimited_args_kwargs - Expected result: 37, 42, 56 / eggs=scrambled, four=4')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_unlimited_args_kwargs' received some positional argument\(s\) after some keyword argument\(s\)",
Template, '{% load custom %}{% simple_unlimited_args_kwargs 37 40|add:2 eggs="scrambled" 56 four=1|add:3 %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_unlimited_args_kwargs' received multiple values for keyword argument 'eggs'",
Template, '{% load custom %}{% simple_unlimited_args_kwargs 37 eggs="scrambled" eggs="scrambled" %}')
def test_simple_tag_registration(self):
# Test that the decorators preserve the decorated function's docstring, name and attributes.
self.verify_tag(custom.no_params, 'no_params')
self.verify_tag(custom.one_param, 'one_param')
self.verify_tag(custom.explicit_no_context, 'explicit_no_context')
self.verify_tag(custom.no_params_with_context, 'no_params_with_context')
self.verify_tag(custom.params_and_context, 'params_and_context')
self.verify_tag(custom.simple_unlimited_args_kwargs, 'simple_unlimited_args_kwargs')
self.verify_tag(custom.simple_tag_without_context_parameter, 'simple_tag_without_context_parameter')
def test_simple_tag_missing_context(self):
# The 'context' parameter must be present when takes_context is True
six.assertRaisesRegex(self, TemplateSyntaxError,
"'simple_tag_without_context_parameter' is decorated with takes_context=True so it must have a first argument of 'context'",
Template, '{% load custom %}{% simple_tag_without_context_parameter 123 %}')
def test_inclusion_tags(self):
c = Context({'value': 42})
t = Template('{% load inclusion %}{% inclusion_no_params %}')
self.assertEqual(t.render(c), 'inclusion_no_params - Expected result\n')
t = Template('{% load inclusion %}{% inclusion_one_param 37 %}')
self.assertEqual(t.render(c), 'inclusion_one_param - Expected result: 37\n')
t = Template('{% load inclusion %}{% inclusion_explicit_no_context 37 %}')
self.assertEqual(t.render(c), 'inclusion_explicit_no_context - Expected result: 37\n')
t = Template('{% load inclusion %}{% inclusion_no_params_with_context %}')
self.assertEqual(t.render(c), 'inclusion_no_params_with_context - Expected result (context value: 42)\n')
t = Template('{% load inclusion %}{% inclusion_params_and_context 37 %}')
self.assertEqual(t.render(c), 'inclusion_params_and_context - Expected result (context value: 42): 37\n')
t = Template('{% load inclusion %}{% inclusion_two_params 37 42 %}')
self.assertEqual(t.render(c), 'inclusion_two_params - Expected result: 37, 42\n')
t = Template('{% load inclusion %}{% inclusion_one_default 37 %}')
self.assertEqual(t.render(c), 'inclusion_one_default - Expected result: 37, hi\n')
t = Template('{% load inclusion %}{% inclusion_one_default 37 two="hello" %}')
self.assertEqual(t.render(c), 'inclusion_one_default - Expected result: 37, hello\n')
t = Template('{% load inclusion %}{% inclusion_one_default one=99 two="hello" %}')
self.assertEqual(t.render(c), 'inclusion_one_default - Expected result: 99, hello\n')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_one_default' received unexpected keyword argument 'three'",
Template, '{% load inclusion %}{% inclusion_one_default 99 two="hello" three="foo" %}')
t = Template('{% load inclusion %}{% inclusion_one_default 37 42 %}')
self.assertEqual(t.render(c), 'inclusion_one_default - Expected result: 37, 42\n')
t = Template('{% load inclusion %}{% inclusion_unlimited_args 37 %}')
self.assertEqual(t.render(c), 'inclusion_unlimited_args - Expected result: 37, hi\n')
t = Template('{% load inclusion %}{% inclusion_unlimited_args 37 42 56 89 %}')
self.assertEqual(t.render(c), 'inclusion_unlimited_args - Expected result: 37, 42, 56, 89\n')
t = Template('{% load inclusion %}{% inclusion_only_unlimited_args %}')
self.assertEqual(t.render(c), 'inclusion_only_unlimited_args - Expected result: \n')
t = Template('{% load inclusion %}{% inclusion_only_unlimited_args 37 42 56 89 %}')
self.assertEqual(t.render(c), 'inclusion_only_unlimited_args - Expected result: 37, 42, 56, 89\n')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_two_params' received too many positional arguments",
Template, '{% load inclusion %}{% inclusion_two_params 37 42 56 %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_one_default' received too many positional arguments",
Template, '{% load inclusion %}{% inclusion_one_default 37 42 56 %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_one_default' did not receive value\(s\) for the argument\(s\): 'one'",
Template, '{% load inclusion %}{% inclusion_one_default %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_unlimited_args' did not receive value\(s\) for the argument\(s\): 'one'",
Template, '{% load inclusion %}{% inclusion_unlimited_args %}')
t = Template('{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" four=1|add:3 %}')
self.assertEqual(t.render(c), 'inclusion_unlimited_args_kwargs - Expected result: 37, 42, 56 / eggs=scrambled, four=4\n')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_unlimited_args_kwargs' received some positional argument\(s\) after some keyword argument\(s\)",
Template, '{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 40|add:2 eggs="scrambled" 56 four=1|add:3 %}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_unlimited_args_kwargs' received multiple values for keyword argument 'eggs'",
Template, '{% load inclusion %}{% inclusion_unlimited_args_kwargs 37 eggs="scrambled" eggs="scrambled" %}')
def test_include_tag_missing_context(self):
# The 'context' parameter must be present when takes_context is True
six.assertRaisesRegex(self, TemplateSyntaxError,
"'inclusion_tag_without_context_parameter' is decorated with takes_context=True so it must have a first argument of 'context'",
Template, '{% load inclusion %}{% inclusion_tag_without_context_parameter 123 %}')
def test_inclusion_tags_from_template(self):
c = Context({'value': 42})
t = Template('{% load inclusion %}{% inclusion_no_params_from_template %}')
self.assertEqual(t.render(c), 'inclusion_no_params_from_template - Expected result\n')
t = Template('{% load inclusion %}{% inclusion_one_param_from_template 37 %}')
self.assertEqual(t.render(c), 'inclusion_one_param_from_template - Expected result: 37\n')
t = Template('{% load inclusion %}{% inclusion_explicit_no_context_from_template 37 %}')
self.assertEqual(t.render(c), 'inclusion_explicit_no_context_from_template - Expected result: 37\n')
t = Template('{% load inclusion %}{% inclusion_no_params_with_context_from_template %}')
self.assertEqual(t.render(c), 'inclusion_no_params_with_context_from_template - Expected result (context value: 42)\n')
t = Template('{% load inclusion %}{% inclusion_params_and_context_from_template 37 %}')
self.assertEqual(t.render(c), 'inclusion_params_and_context_from_template - Expected result (context value: 42): 37\n')
t = Template('{% load inclusion %}{% inclusion_two_params_from_template 37 42 %}')
self.assertEqual(t.render(c), 'inclusion_two_params_from_template - Expected result: 37, 42\n')
t = Template('{% load inclusion %}{% inclusion_one_default_from_template 37 %}')
self.assertEqual(t.render(c), 'inclusion_one_default_from_template - Expected result: 37, hi\n')
t = Template('{% load inclusion %}{% inclusion_one_default_from_template 37 42 %}')
self.assertEqual(t.render(c), 'inclusion_one_default_from_template - Expected result: 37, 42\n')
t = Template('{% load inclusion %}{% inclusion_unlimited_args_from_template 37 %}')
self.assertEqual(t.render(c), 'inclusion_unlimited_args_from_template - Expected result: 37, hi\n')
t = Template('{% load inclusion %}{% inclusion_unlimited_args_from_template 37 42 56 89 %}')
self.assertEqual(t.render(c), 'inclusion_unlimited_args_from_template - Expected result: 37, 42, 56, 89\n')
t = Template('{% load inclusion %}{% inclusion_only_unlimited_args_from_template %}')
self.assertEqual(t.render(c), 'inclusion_only_unlimited_args_from_template - Expected result: \n')
t = Template('{% load inclusion %}{% inclusion_only_unlimited_args_from_template 37 42 56 89 %}')
self.assertEqual(t.render(c), 'inclusion_only_unlimited_args_from_template - Expected result: 37, 42, 56, 89\n')
def test_inclusion_tag_registration(self):
# Test that the decorators preserve the decorated function's docstring, name and attributes.
self.verify_tag(inclusion.inclusion_no_params, 'inclusion_no_params')
self.verify_tag(inclusion.inclusion_one_param, 'inclusion_one_param')
self.verify_tag(inclusion.inclusion_explicit_no_context, 'inclusion_explicit_no_context')
self.verify_tag(inclusion.inclusion_no_params_with_context, 'inclusion_no_params_with_context')
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_tag_current_app, 'inclusion_tag_current_app')
self.verify_tag(inclusion.inclusion_unlimited_args_kwargs, 'inclusion_unlimited_args_kwargs')
@ignore_warnings(category=RemovedInDjango110Warning)
def test_15070_current_app(self):
"""
Test that inclusion tag passes down `current_app` of context to the
Context of the included/rendered template as well.
"""
c = Context({})
t = Template('{% load inclusion %}{% inclusion_tag_current_app %}')
self.assertEqual(t.render(c).strip(), 'None')
# That part produces the deprecation warning
c = Context({}, current_app='advanced')
self.assertEqual(t.render(c).strip(), 'advanced')
def test_15070_use_l10n(self):
"""
Test that inclusion tag passes down `use_l10n` of context to the
Context of the included/rendered template as well.
"""
c = Context({})
t = Template('{% 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)
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)
template = engine.from_string('{% load inclusion %}{% inclusion_extends1 %}{% inclusion_extends2 %}')
self.assertEqual(template.render(Context({})).strip(), 'one\ntwo')
def test_assignment_tags(self):
c = Context({'value': 42})
t = Template('{% load custom %}{% assignment_no_params as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_no_params - Expected result')
t = Template('{% load custom %}{% assignment_one_param 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_one_param - Expected result: 37')
t = Template('{% load custom %}{% assignment_explicit_no_context 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_explicit_no_context - Expected result: 37')
t = Template('{% load custom %}{% assignment_no_params_with_context as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_no_params_with_context - Expected result (context value: 42)')
t = Template('{% load custom %}{% assignment_params_and_context 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_params_and_context - Expected result (context value: 42): 37')
t = Template('{% load custom %}{% assignment_two_params 37 42 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_two_params - Expected result: 37, 42')
t = Template('{% load custom %}{% assignment_one_default 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_one_default - Expected result: 37, hi')
t = Template('{% load custom %}{% assignment_one_default 37 two="hello" as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_one_default - Expected result: 37, hello')
t = Template('{% load custom %}{% assignment_one_default one=99 two="hello" as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_one_default - Expected result: 99, hello')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_default' received unexpected keyword argument 'three'",
Template, '{% load custom %}{% assignment_one_default 99 two="hello" three="foo" as var %}')
t = Template('{% load custom %}{% assignment_one_default 37 42 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_one_default - Expected result: 37, 42')
t = Template('{% load custom %}{% assignment_unlimited_args 37 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_unlimited_args - Expected result: 37, hi')
t = Template('{% load custom %}{% assignment_unlimited_args 37 42 56 89 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_unlimited_args - Expected result: 37, 42, 56, 89')
t = Template('{% load custom %}{% assignment_only_unlimited_args as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_only_unlimited_args - Expected result: ')
t = Template('{% load custom %}{% assignment_only_unlimited_args 37 42 56 89 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_only_unlimited_args - Expected result: 37, 42, 56, 89')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
Template, '{% load custom %}{% assignment_one_param 37 %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
Template, '{% load custom %}{% assignment_one_param 37 as %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_param' tag takes at least 2 arguments and the second last argument must be 'as'",
Template, '{% load custom %}{% assignment_one_param 37 ass var %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_two_params' received too many positional arguments",
Template, '{% load custom %}{% assignment_two_params 37 42 56 as var %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_default' received too many positional arguments",
Template, '{% load custom %}{% assignment_one_default 37 42 56 as var %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_one_default' did not receive value\(s\) for the argument\(s\): 'one'",
Template, '{% load custom %}{% assignment_one_default as var %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_unlimited_args' did not receive value\(s\) for the argument\(s\): 'one'",
Template, '{% load custom %}{% assignment_unlimited_args as var %}The result is: {{ var }}')
t = Template('{% load custom %}{% assignment_unlimited_args_kwargs 37 40|add:2 56 eggs="scrambled" four=1|add:3 as var %}The result is: {{ var }}')
self.assertEqual(t.render(c), 'The result is: assignment_unlimited_args_kwargs - Expected result: 37, 42, 56 / eggs=scrambled, four=4')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_unlimited_args_kwargs' received some positional argument\(s\) after some keyword argument\(s\)",
Template, '{% load custom %}{% assignment_unlimited_args_kwargs 37 40|add:2 eggs="scrambled" 56 four=1|add:3 as var %}The result is: {{ var }}')
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_unlimited_args_kwargs' received multiple values for keyword argument 'eggs'",
Template, '{% load custom %}{% assignment_unlimited_args_kwargs 37 eggs="scrambled" eggs="scrambled" as var %}The result is: {{ var }}')
def test_assignment_tag_registration(self):
# Test that the decorators preserve the decorated function's docstring, name and attributes.
self.verify_tag(custom.assignment_no_params, 'assignment_no_params')
self.verify_tag(custom.assignment_one_param, 'assignment_one_param')
self.verify_tag(custom.assignment_explicit_no_context, 'assignment_explicit_no_context')
self.verify_tag(custom.assignment_no_params_with_context, 'assignment_no_params_with_context')
self.verify_tag(custom.assignment_params_and_context, 'assignment_params_and_context')
self.verify_tag(custom.assignment_one_default, 'assignment_one_default')
self.verify_tag(custom.assignment_two_params, 'assignment_two_params')
self.verify_tag(custom.assignment_unlimited_args, 'assignment_unlimited_args')
self.verify_tag(custom.assignment_only_unlimited_args, 'assignment_only_unlimited_args')
self.verify_tag(custom.assignment_unlimited_args, 'assignment_unlimited_args')
self.verify_tag(custom.assignment_unlimited_args_kwargs, 'assignment_unlimited_args_kwargs')
self.verify_tag(custom.assignment_tag_without_context_parameter, 'assignment_tag_without_context_parameter')
def test_assignment_tag_missing_context(self):
# The 'context' parameter must be present when takes_context is True
six.assertRaisesRegex(self, TemplateSyntaxError,
"'assignment_tag_without_context_parameter' is decorated with takes_context=True so it must have a first argument of 'context'",
Template, '{% load custom %}{% assignment_tag_without_context_parameter 123 as var %}')
class TemplateTagLoadingTests(SimpleTestCase):
def setUp(self):
self.egg_dir = os.path.join(ROOT, 'eggs')
def test_load_error(self):
ttext = "{% load broken_tag %}"
with self.assertRaises(TemplateSyntaxError) as e:
Template(ttext)
self.assertIn('ImportError', e.exception.args[0])
self.assertIn('Xtemplate', e.exception.args[0])
def test_load_error_egg(self):
ttext = "{% load broken_egg %}"
egg_name = '%s/tagsegg.egg' % self.egg_dir
with extend_sys_path(egg_name):
with self.assertRaises(TemplateSyntaxError):
with self.settings(INSTALLED_APPS=['tagsegg']):
Template(ttext)
try:
with self.settings(INSTALLED_APPS=['tagsegg']):
Template(ttext)
except TemplateSyntaxError as e:
self.assertIn('ImportError', e.args[0])
self.assertIn('Xtemplate', e.args[0])
def test_load_working_egg(self):
ttext = "{% load working_egg %}"
egg_name = '%s/tagsegg.egg' % self.egg_dir
with extend_sys_path(egg_name):
with self.settings(INSTALLED_APPS=['tagsegg']):
Template(ttext)
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