tests: refactor tests
tests: refactor tests

mpareja/http-proxy-middleware,mTazelaar/http-proxy-middleware,rbarilani/http-proxy-middleware,chimurai/http-proxy-middleware,hilel/http-proxy-middleware,adeneui/http-proxy-middleware,chimurai/http-proxy-middleware,chimurai/http-proxy-middleware,xiwc/http-proxy-middleware