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from __future__ import unicode_literals
from io import BytesIO
from django.core.servers.basehttp import ServerHandler
from django.utils.unittest import TestCase
#
# Tests for #9659: wsgi.file_wrapper in the builtin server.
# We need to mock a couple of handlers and keep track of what
# gets called when using a couple kinds of WSGI apps.
#
class DummyHandler(object):
def log_request(*args, **kwargs):
pass
class FileWrapperHandler(ServerHandler):
def __init__(self, *args, **kwargs):
ServerHandler.__init__(self, *args, **kwargs)
self.request_handler = DummyHandler()
self._used_sendfile = False
def sendfile(self):
self._used_sendfile = True
return True
def wsgi_app(environ, start_response):
start_response(str('200 OK'), [(str('Content-Type'), str('text/plain'))])
return [b'Hello World!']
def wsgi_app_file_wrapper(environ, start_response):
start_response(str('200 OK'), [(str('Content-Type'), str('text/plain'))])
return environ['wsgi.file_wrapper'](BytesIO(b'foo'))
class WSGIFileWrapperTests(TestCase):
"""
Test that the wsgi.file_wrapper works for the builting server.
"""
def test_file_wrapper_uses_sendfile(self):
env = {'SERVER_PROTOCOL': 'HTTP/1.0'}
handler = FileWrapperHandler(None, BytesIO(), BytesIO(), env)
handler.run(wsgi_app_file_wrapper)
self.assertTrue(handler._used_sendfile)
self.assertEqual(handler.stdout.getvalue(), b'')
self.assertEqual(handler.stderr.getvalue(), b'')
def test_file_wrapper_no_sendfile(self):
env = {'SERVER_PROTOCOL': 'HTTP/1.0'}
handler = FileWrapperHandler(None, BytesIO(), BytesIO(), env)
handler.run(wsgi_app)
self.assertFalse(handler._used_sendfile)
self.assertEqual(handler.stdout.getvalue().splitlines()[-1], b'Hello World!')
self.assertEqual(handler.stderr.getvalue(), b'')
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