simpletest version 1.01 :
After a click on a link, my test fails retrieving a substring in the page event if it is present.
Sniffing the network shows me that :
the simpletest tool downloads the part 1
and raises an error whereas the second part comes a few seconds later
Looked at http.php : SimpleHttpResponse::_readAll
There is a loop but I think _isLastPacket lies.