convert tests to pytest
convert tests to pytest

IvanMalison/vcrpy,graingert/vcrpy,poussik/vcrpy,poussik/vcrpy,gwillem/vcrpy,ByteInternet/vcrpy,graingert/vcrpy,aclevy/vcrpy,ByteInternet/vcrpy,bcen/vcrpy,kevin1024/vcrpy,agriffis/vcrpy,kevin1024/vcrpy,mgeisler/vcrpy,yarikoptic/vcrpy