def test_continuedHeaderCallback(self):
        header, protocol = self._headerTestSetup()
        protocol.dataReceived(b'X-Foo: bar' + self.sep)
        protocol.dataReceived(b' baz' + self.sep)
        protocol.dataReceived(b'\tquux' + self.sep)
        protocol.dataReceived(self.sep)
        self.assertEqual(header, {b'X-Foo': b'bar baz\tquux'})
        self.assertEqual(protocol.state, BODY)
If a header is split over multiple lines, L{HTTPParser} calls
dataset/ETHPy150Open twisted/twisted/twisted/web/test/test_newclient.py/_HTTPParserTests.test_continuedHeaderCallback