Convert test_web_cli.py to pytest-mock usage
Convert test_web_cli.py to pytest-mock usage

alex-eri/aiohttp-1,z2v/aiohttp,rutsky/aiohttp,alex-eri/aiohttp-1,rutsky/aiohttp,hellysmile/aiohttp,z2v/aiohttp,AraHaanOrg/aiohttp,esaezgil/aiohttp,panda73111/aiohttp,panda73111/aiohttp,arthurdarcet/aiohttp,juliatem/aiohttp,KeepSafe/aiohttp,esaezgil/aiohttp,moden-py/aiohttp,playpauseandstop/aiohttp,pfreixes/aiohttp,alex-eri/aiohttp-1,jettify/aiohttp,arthurdarcet/aiohttp,pfreixes/aiohttp,moden-py/aiohttp,esaezgil/aiohttp,singulared/aiohttp,panda73111/aiohttp,rutsky/aiohttp,juliatem/aiohttp,jettify/aiohttp,KeepSafe/aiohttp,AraHaanOrg/aiohttp,jettify/aiohttp,Eyepea/aiohttp,arthurdarcet/aiohttp,singulared/aiohttp,KeepSafe/aiohttp,moden-py/aiohttp,z2v/aiohttp,singulared/aiohttp,hellysmile/aiohttp