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from django.core.exceptions import ImproperlyConfigured
from django.core.servers.basehttp import get_internal_wsgi_application
from django.core.signals import request_started
from django.core.wsgi import get_wsgi_application
from django.db import close_old_connections
from django.http import FileResponse
from django.test import SimpleTestCase, override_settings
from django.test.client import RequestFactory
@override_settings(ROOT_URLCONF="wsgi.urls")
class WSGITest(SimpleTestCase):
request_factory = RequestFactory()
def setUp(self):
request_started.disconnect(close_old_connections)
def tearDown(self):
request_started.connect(close_old_connections)
def test_get_wsgi_application(self):
"""
get_wsgi_application() returns a functioning WSGI callable.
"""
application = get_wsgi_application()
environ = self.request_factory._base_environ(
PATH_INFO="/", CONTENT_TYPE="text/html; charset=utf-8", REQUEST_METHOD="GET"
)
response_data = {}
def start_response(status, headers):
response_data["status"] = status
response_data["headers"] = headers
response = application(environ, start_response)
self.assertEqual(response_data["status"], "200 OK")
self.assertEqual(
set(response_data["headers"]),
{("Content-Length", "12"), ("Content-Type", "text/html; charset=utf-8")},
)
self.assertIn(
bytes(response),
[
b"Content-Length: 12\r\nContent-Type: text/html; "
b"charset=utf-8\r\n\r\nHello World!",
b"Content-Type: text/html; "
b"charset=utf-8\r\nContent-Length: 12\r\n\r\nHello World!",
],
)
def test_file_wrapper(self):
"""
FileResponse uses wsgi.file_wrapper.
"""
class FileWrapper:
def __init__(self, filelike, block_size=None):
self.block_size = block_size
filelike.close()
application = get_wsgi_application()
environ = self.request_factory._base_environ(
PATH_INFO="/file/",
REQUEST_METHOD="GET",
**{"wsgi.file_wrapper": FileWrapper},
)
response_data = {}
def start_response(status, headers):
response_data["status"] = status
response_data["headers"] = headers
response = application(environ, start_response)
self.assertEqual(response_data["status"], "200 OK")
self.assertIsInstance(response, FileWrapper)
self.assertEqual(response.block_size, FileResponse.block_size)
class GetInternalWSGIApplicationTest(SimpleTestCase):
@override_settings(WSGI_APPLICATION="wsgi.wsgi.application")
def test_success(self):
"""
If ``WSGI_APPLICATION`` is a dotted path, the referenced object is
returned.
"""
app = get_internal_wsgi_application()
from .wsgi import application
self.assertIs(app, application)
@override_settings(WSGI_APPLICATION=None)
def test_default(self):
"""
If ``WSGI_APPLICATION`` is ``None``, the return value of
``get_wsgi_application`` is returned.
"""
# Mock out get_wsgi_application so we know its return value is used
fake_app = object()
def mock_get_wsgi_app():
return fake_app
from django.core.servers import basehttp
_orig_get_wsgi_app = basehttp.get_wsgi_application
basehttp.get_wsgi_application = mock_get_wsgi_app
try:
app = get_internal_wsgi_application()
self.assertIs(app, fake_app)
finally:
basehttp.get_wsgi_application = _orig_get_wsgi_app
@override_settings(WSGI_APPLICATION="wsgi.noexist.app")
def test_bad_module(self):
msg = "WSGI application 'wsgi.noexist.app' could not be loaded; Error importing"
with self.assertRaisesMessage(ImproperlyConfigured, msg):
get_internal_wsgi_application()
@override_settings(WSGI_APPLICATION="wsgi.wsgi.noexist")
def test_bad_name(self):
msg = (
"WSGI application 'wsgi.wsgi.noexist' could not be loaded; Error importing"
)
with self.assertRaisesMessage(ImproperlyConfigured, msg):
get_internal_wsgi_application()
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