Add tests for UploadHandler.
Add tests for UploadHandler.

AdamIsrael/juju,axw/juju,howbazaar/juju,dimitern/juju,mikemccracken/juju,howbazaar/juju,AdamIsrael/juju,ericsnowcurrently/juju,frankban/juju,kat-co/juju,bz2/juju,perrito666/juju,gabriel-samfira/juju,gabriel-samfira/juju,mjs/juju,ericsnowcurrently/juju,anastasiamac/juju,axw/juju,bac/juju,anastasiamac/juju,dooferlad/juju,bz2/juju,frankban/juju,alesstimec/juju,frankban/juju,howbazaar/juju,perrito666/juju,alesstimec/juju,alesstimec/juju,mikemccracken/juju,bogdanteleaga/juju,axw/juju,bogdanteleaga/juju,kat-co/juju,ericsnowcurrently/juju,bz2/juju,bogdanteleaga/juju,davecheney/juju,mjs/juju,mjs/juju,mjs/juju,mikemccracken/juju,macgreagoir/juju,reedobrien/juju,anastasiamac/juju,reedobrien/juju,bogdanteleaga/juju,howbazaar/juju,gabriel-samfira/juju,makyo/juju,macgreagoir/juju,anastasiamac/juju,waigani/juju,makyo/juju,dooferlad/juju,frankban/juju,dimitern/juju,makyo/juju,mikemccracken/juju,marcmolla/juju,perrito666/juju,davecheney/juju,marcmolla/juju,marcmolla/juju,ericsnowcurrently/juju,bz2/juju,kat-co/juju,gabriel-samfira/juju,reedobrien/juju,kat-co/juju,bac/juju,perrito666/juju,gabriel-samfira/juju,dooferlad/juju,dimitern/juju,mjs/juju,waigani/juju,dooferlad/juju,AdamIsrael/juju,bac/juju,davecheney/juju,ericsnowcurrently/juju,bac/juju,mjs/juju,kat-co/juju,reedobrien/juju,dimitern/juju,axw/juju,mjs/juju,waigani/juju,marcmolla/juju,waigani/juju,dimitern/juju,macgreagoir/juju,perrito666/juju,alesstimec/juju,AdamIsrael/juju,macgreagoir/juju,anastasiamac/juju,frankban/juju,davecheney/juju,mikemccracken/juju,dooferlad/juju,howbazaar/juju,marcmolla/juju,alesstimec/juju,makyo/juju,reedobrien/juju,bz2/juju,macgreagoir/juju,bac/juju,axw/juju