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from pathlib import Path
from template_tests.test_response import test_processor_name
from django.template import Context, EngineHandler, RequestContext
from django.template.backends.django import DjangoTemplates
from django.template.library import InvalidTemplateLibrary
from django.test import RequestFactory, override_settings
from .test_dummy import TemplateStringsTests
class DjangoTemplatesTests(TemplateStringsTests):
engine_class = DjangoTemplates
backend_name = "django"
request_factory = RequestFactory()
def test_context_has_priority_over_template_context_processors(self):
# See ticket #23789.
engine = DjangoTemplates(
{
"DIRS": [],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {
"context_processors": [test_processor_name],
},
}
)
template = engine.from_string("{{ processors }}")
request = self.request_factory.get("/")
# Context processors run
content = template.render({}, request)
self.assertEqual(content, "yes")
# Context overrides context processors
content = template.render({"processors": "no"}, request)
self.assertEqual(content, "no")
def test_render_requires_dict(self):
"""django.Template.render() requires a dict."""
engine = DjangoTemplates(
{
"DIRS": [],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {},
}
)
template = engine.from_string("")
context = Context()
request_context = RequestContext(self.request_factory.get("/"), {})
msg = "context must be a dict rather than Context."
with self.assertRaisesMessage(TypeError, msg):
template.render(context)
msg = "context must be a dict rather than RequestContext."
with self.assertRaisesMessage(TypeError, msg):
template.render(request_context)
@override_settings(INSTALLED_APPS=["template_backends.apps.good"])
def test_templatetag_discovery(self):
engine = DjangoTemplates(
{
"DIRS": [],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {
"libraries": {
"alternate": (
"template_backends.apps.good.templatetags.good_tags"
),
"override": (
"template_backends.apps.good.templatetags.good_tags"
),
},
},
}
)
# libraries are discovered from installed applications
self.assertEqual(
engine.engine.libraries["good_tags"],
"template_backends.apps.good.templatetags.good_tags",
)
self.assertEqual(
engine.engine.libraries["subpackage.tags"],
"template_backends.apps.good.templatetags.subpackage.tags",
)
# libraries are discovered from django.templatetags
self.assertEqual(
engine.engine.libraries["static"],
"django.templatetags.static",
)
# libraries passed in OPTIONS are registered
self.assertEqual(
engine.engine.libraries["alternate"],
"template_backends.apps.good.templatetags.good_tags",
)
# libraries passed in OPTIONS take precedence over discovered ones
self.assertEqual(
engine.engine.libraries["override"],
"template_backends.apps.good.templatetags.good_tags",
)
@override_settings(INSTALLED_APPS=["template_backends.apps.importerror"])
def test_templatetag_discovery_import_error(self):
"""
Import errors in tag modules should be reraised with a helpful message.
"""
with self.assertRaisesMessage(
InvalidTemplateLibrary,
"ImportError raised when trying to load "
"'template_backends.apps.importerror.templatetags.broken_tags'",
) as cm:
DjangoTemplates(
{
"DIRS": [],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {},
}
)
self.assertIsInstance(cm.exception.__cause__, ImportError)
def test_builtins_discovery(self):
engine = DjangoTemplates(
{
"DIRS": [],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {
"builtins": ["template_backends.apps.good.templatetags.good_tags"],
},
}
)
self.assertEqual(
engine.engine.builtins,
[
"django.template.defaulttags",
"django.template.defaultfilters",
"django.template.loader_tags",
"template_backends.apps.good.templatetags.good_tags",
],
)
def test_autoescape_off(self):
templates = [
{
"BACKEND": "django.template.backends.django.DjangoTemplates",
"OPTIONS": {"autoescape": False},
}
]
engines = EngineHandler(templates=templates)
self.assertEqual(
engines["django"]
.from_string("Hello, {{ name }}")
.render({"name": "Bob & Jim"}),
"Hello, Bob & Jim",
)
def test_autoescape_default(self):
templates = [
{
"BACKEND": "django.template.backends.django.DjangoTemplates",
}
]
engines = EngineHandler(templates=templates)
self.assertEqual(
engines["django"]
.from_string("Hello, {{ name }}")
.render({"name": "Bob & Jim"}),
"Hello, Bob & Jim",
)
def test_default_template_loaders(self):
"""The cached template loader is always enabled by default."""
for debug in (True, False):
with self.subTest(DEBUG=debug), self.settings(DEBUG=debug):
engine = DjangoTemplates(
{"DIRS": [], "APP_DIRS": True, "NAME": "django", "OPTIONS": {}}
)
self.assertEqual(
engine.engine.loaders,
[
(
"django.template.loaders.cached.Loader",
[
"django.template.loaders.filesystem.Loader",
"django.template.loaders.app_directories.Loader",
],
)
],
)
def test_dirs_pathlib(self):
engine = DjangoTemplates(
{
"DIRS": [Path(__file__).parent / "templates" / "template_backends"],
"APP_DIRS": False,
"NAME": "django",
"OPTIONS": {},
}
)
template = engine.get_template("hello.html")
self.assertEqual(template.render({"name": "Joe"}), "Hello Joe!\n")
|
