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278 lines
10 KiB
Python
278 lines
10 KiB
Python
import os.path
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import sys
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import tempfile
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import unittest
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from contextlib import contextmanager
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from django.template import TemplateDoesNotExist
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from django.template.engine import Engine
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from django.test import SimpleTestCase, override_settings
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from django.utils.functional import lazystr
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from .utils import TEMPLATE_DIR
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class CachedLoaderTests(SimpleTestCase):
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def setUp(self):
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self.engine = Engine(
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dirs=[TEMPLATE_DIR],
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loaders=[
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(
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"django.template.loaders.cached.Loader",
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[
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"django.template.loaders.filesystem.Loader",
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],
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),
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],
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)
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def test_get_template(self):
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template = self.engine.get_template("index.html")
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self.assertEqual(template.origin.name, os.path.join(TEMPLATE_DIR, "index.html"))
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self.assertEqual(template.origin.template_name, "index.html")
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self.assertEqual(
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template.origin.loader, self.engine.template_loaders[0].loaders[0]
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)
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cache = self.engine.template_loaders[0].get_template_cache
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self.assertEqual(cache["index.html"], template)
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# Run a second time from cache
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template = self.engine.get_template("index.html")
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self.assertEqual(template.origin.name, os.path.join(TEMPLATE_DIR, "index.html"))
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self.assertEqual(template.origin.template_name, "index.html")
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self.assertEqual(
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template.origin.loader, self.engine.template_loaders[0].loaders[0]
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)
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def test_get_template_missing_debug_off(self):
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"""
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With template debugging disabled, the raw TemplateDoesNotExist class
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should be cached when a template is missing. See ticket #26306 and
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docstrings in the cached loader for details.
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"""
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self.engine.debug = False
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with self.assertRaises(TemplateDoesNotExist):
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self.engine.get_template("prod-template-missing.html")
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e = self.engine.template_loaders[0].get_template_cache[
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"prod-template-missing.html"
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]
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self.assertEqual(e, TemplateDoesNotExist)
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def test_get_template_missing_debug_on(self):
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"""
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With template debugging enabled, a TemplateDoesNotExist instance
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should be cached when a template is missing.
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"""
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self.engine.debug = True
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with self.assertRaises(TemplateDoesNotExist):
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self.engine.get_template("debug-template-missing.html")
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e = self.engine.template_loaders[0].get_template_cache[
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"debug-template-missing.html"
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]
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self.assertIsInstance(e, TemplateDoesNotExist)
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self.assertEqual(e.args[0], "debug-template-missing.html")
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def test_cached_exception_no_traceback(self):
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"""
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When a TemplateDoesNotExist instance is cached, the cached instance
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should not contain the __traceback__, __context__, or __cause__
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attributes that Python sets when raising exceptions.
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"""
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self.engine.debug = True
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with self.assertRaises(TemplateDoesNotExist):
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self.engine.get_template("no-traceback-in-cache.html")
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e = self.engine.template_loaders[0].get_template_cache[
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"no-traceback-in-cache.html"
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]
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error_msg = "Cached TemplateDoesNotExist must not have been thrown."
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self.assertIsNone(e.__traceback__, error_msg)
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self.assertIsNone(e.__context__, error_msg)
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self.assertIsNone(e.__cause__, error_msg)
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def test_template_name_leading_dash_caching(self):
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"""
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#26536 -- A leading dash in a template name shouldn't be stripped
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from its cache key.
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"""
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self.assertEqual(
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self.engine.template_loaders[0].cache_key("-template.html", []),
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"-template.html",
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)
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def test_template_name_lazy_string(self):
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"""
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#26603 -- A template name specified as a lazy string should be forced
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to text before computing its cache key.
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"""
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self.assertEqual(
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self.engine.template_loaders[0].cache_key(lazystr("template.html"), []),
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"template.html",
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)
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def test_get_dirs(self):
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inner_dirs = self.engine.template_loaders[0].loaders[0].get_dirs()
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self.assertSequenceEqual(
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list(self.engine.template_loaders[0].get_dirs()), list(inner_dirs)
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)
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class FileSystemLoaderTests(SimpleTestCase):
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@classmethod
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def setUpClass(cls):
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cls.engine = Engine(
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dirs=[TEMPLATE_DIR], loaders=["django.template.loaders.filesystem.Loader"]
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)
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super().setUpClass()
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@contextmanager
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def set_dirs(self, dirs):
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original_dirs = self.engine.dirs
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self.engine.dirs = dirs
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try:
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yield
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finally:
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self.engine.dirs = original_dirs
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@contextmanager
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def source_checker(self, dirs):
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loader = self.engine.template_loaders[0]
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def check_sources(path, expected_sources):
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expected_sources = [os.path.abspath(s) for s in expected_sources]
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self.assertEqual(
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[origin.name for origin in loader.get_template_sources(path)],
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expected_sources,
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)
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with self.set_dirs(dirs):
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yield check_sources
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def test_get_template(self):
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template = self.engine.get_template("index.html")
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self.assertEqual(template.origin.name, os.path.join(TEMPLATE_DIR, "index.html"))
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self.assertEqual(template.origin.template_name, "index.html")
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self.assertEqual(template.origin.loader, self.engine.template_loaders[0])
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self.assertEqual(
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template.origin.loader_name, "django.template.loaders.filesystem.Loader"
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)
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def test_loaders_dirs(self):
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engine = Engine(
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loaders=[("django.template.loaders.filesystem.Loader", [TEMPLATE_DIR])]
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)
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template = engine.get_template("index.html")
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self.assertEqual(template.origin.name, os.path.join(TEMPLATE_DIR, "index.html"))
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def test_loaders_dirs_empty(self):
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"""An empty dirs list in loaders overrides top level dirs."""
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engine = Engine(
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dirs=[TEMPLATE_DIR],
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loaders=[("django.template.loaders.filesystem.Loader", [])],
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)
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with self.assertRaises(TemplateDoesNotExist):
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engine.get_template("index.html")
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def test_directory_security(self):
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with self.source_checker(["/dir1", "/dir2"]) as check_sources:
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check_sources("index.html", ["/dir1/index.html", "/dir2/index.html"])
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check_sources("/etc/passwd", [])
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check_sources("etc/passwd", ["/dir1/etc/passwd", "/dir2/etc/passwd"])
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check_sources("../etc/passwd", [])
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check_sources("../../../etc/passwd", [])
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check_sources("/dir1/index.html", ["/dir1/index.html"])
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check_sources("../dir2/index.html", ["/dir2/index.html"])
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check_sources("/dir1blah", [])
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check_sources("../dir1blah", [])
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def test_unicode_template_name(self):
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with self.source_checker(["/dir1", "/dir2"]) as check_sources:
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check_sources("Ångström", ["/dir1/Ångström", "/dir2/Ångström"])
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def test_bytestring(self):
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loader = self.engine.template_loaders[0]
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msg = "Can't mix strings and bytes in path components"
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with self.assertRaisesMessage(TypeError, msg):
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list(loader.get_template_sources(b"\xc3\x85ngstr\xc3\xb6m"))
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def test_unicode_dir_name(self):
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with self.source_checker(["/Straße"]) as check_sources:
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check_sources("Ångström", ["/Straße/Ångström"])
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@unittest.skipUnless(
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os.path.normcase("/TEST") == os.path.normpath("/test"),
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"This test only runs on case-sensitive file systems.",
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)
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def test_case_sensitivity(self):
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with self.source_checker(["/dir1", "/DIR2"]) as check_sources:
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check_sources("index.html", ["/dir1/index.html", "/DIR2/index.html"])
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check_sources("/DIR1/index.HTML", ["/DIR1/index.HTML"])
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def test_file_does_not_exist(self):
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with self.assertRaises(TemplateDoesNotExist):
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self.engine.get_template("doesnotexist.html")
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@unittest.skipIf(
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sys.platform == "win32",
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"Python on Windows doesn't have working os.chmod().",
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)
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def test_permissions_error(self):
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with tempfile.NamedTemporaryFile() as tmpfile:
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tmpdir = os.path.dirname(tmpfile.name)
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tmppath = os.path.join(tmpdir, tmpfile.name)
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os.chmod(tmppath, 0o0222)
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with self.set_dirs([tmpdir]):
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with self.assertRaisesMessage(PermissionError, "Permission denied"):
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self.engine.get_template(tmpfile.name)
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def test_notafile_error(self):
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# Windows raises PermissionError when trying to open a directory.
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with self.assertRaises(
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PermissionError if sys.platform == "win32" else IsADirectoryError
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):
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self.engine.get_template("first")
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class AppDirectoriesLoaderTests(SimpleTestCase):
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@classmethod
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def setUpClass(cls):
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cls.engine = Engine(
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loaders=["django.template.loaders.app_directories.Loader"],
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)
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super().setUpClass()
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@override_settings(INSTALLED_APPS=["template_tests"])
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def test_get_template(self):
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template = self.engine.get_template("index.html")
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self.assertEqual(template.origin.name, os.path.join(TEMPLATE_DIR, "index.html"))
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self.assertEqual(template.origin.template_name, "index.html")
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self.assertEqual(template.origin.loader, self.engine.template_loaders[0])
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@override_settings(INSTALLED_APPS=[])
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def test_not_installed(self):
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with self.assertRaises(TemplateDoesNotExist):
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self.engine.get_template("index.html")
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class LocmemLoaderTests(SimpleTestCase):
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@classmethod
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def setUpClass(cls):
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cls.engine = Engine(
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loaders=[
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(
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"django.template.loaders.locmem.Loader",
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{
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"index.html": "index",
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},
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)
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],
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)
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super().setUpClass()
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def test_get_template(self):
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template = self.engine.get_template("index.html")
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self.assertEqual(template.origin.name, "index.html")
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self.assertEqual(template.origin.template_name, "index.html")
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self.assertEqual(template.origin.loader, self.engine.template_loaders[0])
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