authgrpc_test.go:31:5: `mock` is a global variable (gochecknoglobals)
var mock *testGrpcAuthClient
    ^
authgrpc_test.go:32:5: `client` is a global variable (gochecknoglobals)
var client grpcAuthServiceClient
    ^
authgrpc_test.go:33:5: `pk` is a global variable (gochecknoglobals)
var pk *rsa.PrivateKey
    ^