def test_maybe_finalize_headers(self, write_method):
writer = HttpWriter(None, None, None, None)
writer._maybe_send_headers()
write_method.assert_called_with(b'\r\n')
writer = HttpWriter(None, None, None, None)
writer._headers_sent = True
writer._maybe_send_headers()
self.assertTrue(writer._headers_sent)
def test_write_header_raises_when_headers_sent(self):
writer = HttpWriter(None, None, None, None)
writer._headers_sent = True
self.assertRaises(AssertionError, writer.write_header, b'foo', b'bar')
