flag.Parse() is being called before your flag is defined.

You have to make sure that all flag definitions happen before callingflag.Parse(), usually by defining all flags insideinit() functions.

If you've migrated to golang 13, it changed the order of the test initializer,so it could lead to something like

flag provided but not defined: -test.timeout

as a possible workaround, you can use

var _ = func() bool {    testing.Init()    return true}()

that would call test initialization before the application one. More info can be found on the original thread:

https://github.com/golang/go/issues/31859#issuecomment-489889428

I'm very late to the party; but is this broken (again) on Go 1.19.5?

I hit the same errors reported on this thread and the same solution reported above (https://github.com/golang/go/issues/31859#issuecomment-489889428) fixes it.

I see a call toflags.Parse() was added back ingo_test.go inv1.18

https://go.googlesource.com/go/+/f7248f05946c1804b5519d0b3eb0db054dc9c5d6%5E%21/src/cmd/go/go_test.go

I am only just learning Go so it'd be nice to have some verification from people more skilled before I report this elsewhere.

Do not callflag.Parse() in anyinit() method

If you get this, when running command viadocker-compose then you do incorrect quoting. Eg.

services:  app:    ...    image: kumina/openvpn-exporter:latest    command: [        "--openvpn.status_paths", "/etc/openvpn_exporter/openvpn-status.log",      "--openvpn.status_paths /etc/openvpn_exporter/openvpn-status.log",    ]

First is correct, second is wrong, because whole line counted as one parameter. You need to split them by passing two separate strings, like in first line.

You can runflag.Parse() only one time, check if you are calling another code withflag.Parse()

• unit-testing
• go
• go-testing
• go-flag