go test: fails, when server.StartServer(...) is in main - violated testing rules

[diefans]

I want to integrate my plugin with the go-pdk server:

func main() {
	log.Info().Str("version", version).Msg("Starting pdk server")
	server.StartServer(New, version, 100)
}

If I run go test I get

flag provided but not defined: -test.paniconexit0
Usage of /tmp/go-build1002799689/b001/bm-authx.test:
  -dump
        Dump info about plugins
  -help
        Show usage info
  -kong-prefix string
        Kong prefix path (specified by the -p argument commonly used in the kong cli) (default
"/usr/local/kong")
exit status 2
FAIL    bm-authx        0.003s

After reading through docs at https://golang.org/doc/go1.13#testing

As a result, testing flags are now only registered when running a test binary, and packages that call flag.Parse during package initialization may cause tests to fail.

I think https://github.com/Kong/go-pdk/blob/master/server/server.go#L32 violates the testing rules for golang, e.g.:

func init() {
	flag.Parse()
	// ...
}