Request: need option to reuse container created before, and Preset need Clear/Reset method

[kkHAIKE]

Create Container every test run, maybe waste a lot of time 😮‍💨(mariadb inited cost 1m+-)

[orlangure]

Hi! Thanks for bringing this up.

To avoid creating a container multiple times I suggest using subtests (t.Run) or TestMain, and structuring the tests in a different way.

I'll look into a way to reset presets in a week when I'm back from vacation, but I think there isn't a reliable way to reset every preset to its original state without recreating it. You would need to guess every possible change that the other code makes to revert it.

[kkHAIKE]

some large business app want to use db from multi package.... 😭

i make PR for that, WIP now, add test and db preset support tomorrow
#294

[kkHAIKE]

i think should use client check exist myself..

[orlangure]

@kkHAIKE, I see you closed the PR and this issue, so I assume you figured out how to solve your issue locally. Thanks.

[kkHAIKE]

use this function check first, than gnomock.Start

func checkExist(name string, namedPorts gnomock.NamedPorts) (_ gnomock.NamedPorts, err error) {
	cli, err := client.NewClientWithOpts(client.FromEnv, client.WithAPIVersionNegotiation())
	if err != nil {
		return
	}

	cont, err := cli.ContainerInspect(context.Background(), name)
	if err != nil {
		if client.IsErrNotFound(err) {
			err = nil
		}
		return
	}

	return boundNamedPorts(cont, namedPorts)
}

name is WithContainerName set