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a7960bcb35
Thanks to amosonn at yahoo.com for the report, @doda for the initial patch and @datagrok for the revamped logic and test case.
103 lines
3.4 KiB
Python
103 lines
3.4 KiB
Python
from __future__ import unicode_literals
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from io import BytesIO
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from django.core.servers.basehttp import ServerHandler, MAX_SOCKET_CHUNK_SIZE
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from django.utils.unittest import TestCase
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class DummyHandler(object):
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def log_request(self, *args, **kwargs):
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pass
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class FileWrapperHandler(ServerHandler):
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def __init__(self, *args, **kwargs):
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super(FileWrapperHandler, self).__init__(*args, **kwargs)
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self.request_handler = DummyHandler()
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self._used_sendfile = False
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def sendfile(self):
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self._used_sendfile = True
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return True
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def wsgi_app(environ, start_response):
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start_response(str('200 OK'), [(str('Content-Type'), str('text/plain'))])
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return [b'Hello World!']
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def wsgi_app_file_wrapper(environ, start_response):
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start_response(str('200 OK'), [(str('Content-Type'), str('text/plain'))])
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return environ['wsgi.file_wrapper'](BytesIO(b'foo'))
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class WSGIFileWrapperTests(TestCase):
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"""
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Test that the wsgi.file_wrapper works for the builting server.
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Tests for #9659: wsgi.file_wrapper in the builtin server.
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We need to mock a couple of handlers and keep track of what
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gets called when using a couple kinds of WSGI apps.
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"""
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def test_file_wrapper_uses_sendfile(self):
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env = {'SERVER_PROTOCOL': 'HTTP/1.0'}
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handler = FileWrapperHandler(None, BytesIO(), BytesIO(), env)
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handler.run(wsgi_app_file_wrapper)
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self.assertTrue(handler._used_sendfile)
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self.assertEqual(handler.stdout.getvalue(), b'')
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self.assertEqual(handler.stderr.getvalue(), b'')
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def test_file_wrapper_no_sendfile(self):
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env = {'SERVER_PROTOCOL': 'HTTP/1.0'}
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handler = FileWrapperHandler(None, BytesIO(), BytesIO(), env)
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handler.run(wsgi_app)
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self.assertFalse(handler._used_sendfile)
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self.assertEqual(handler.stdout.getvalue().splitlines()[-1], b'Hello World!')
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self.assertEqual(handler.stderr.getvalue(), b'')
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class WriteChunkCounterHandler(ServerHandler):
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"""
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Server handler that counts the number of chunks written after headers were
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sent. Used to make sure large response body chunking works properly.
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"""
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def __init__(self, *args, **kwargs):
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super(WriteChunkCounterHandler, self).__init__(*args, **kwargs)
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self.request_handler = DummyHandler()
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self.headers_written = False
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self.write_chunk_counter = 0
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def send_headers(self):
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super(WriteChunkCounterHandler, self).send_headers()
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self.headers_written = True
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def _write(self, data):
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if self.headers_written:
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self.write_chunk_counter += 1
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self.stdout.write(data)
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def send_big_data_app(environ, start_response):
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start_response(str('200 OK'), [(str('Content-Type'), str('text/plain'))])
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# Return a blob of data that is 1.5 times the maximum chunk size.
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return [b'x' * (MAX_SOCKET_CHUNK_SIZE + MAX_SOCKET_CHUNK_SIZE // 2)]
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class ServerHandlerChunksProperly(TestCase):
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"""
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Test that the ServerHandler chunks data properly.
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Tests for #18972: The logic that performs the math to break data into
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32MB (MAX_SOCKET_CHUNK_SIZE) chunks was flawed, BUT it didn't actually
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cause any problems.
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"""
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def test_chunked_data(self):
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env = {'SERVER_PROTOCOL': 'HTTP/1.0'}
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handler = WriteChunkCounterHandler(None, BytesIO(), BytesIO(), env)
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handler.run(send_big_data_app)
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self.assertEqual(handler.write_chunk_counter, 2)
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