Add "nosleep" linter

[powerman]

Your feature request related to a problem? Please describe.

Using time.Sleep in tests is a mistake in most of cases.

Describe the solution you'd like.

Linter should detect time.Sleep in tests.

Describe alternatives you've considered.

TBH as golangci-link contains nearly hundred of linters it's hard to say is some of existing ones can be configured to do this.

Additional context.

https://xeiaso.net/blog/nosleep

[dshemin]

Hi!

You can use forbidigo linter for this case.
Just put this lines to config:

linters:
  # ...
  enable:
    # ...
    - forbidigo
    # ...
# ...
linters-settings:
  # ...
  forbidigo:
      forbid:
          - p: time.Sleep
            msg: "Avoid time.Sleep in you code please"
  #...

[powerman]

Isn't this will apply both to tests and code, instead of just tests?

[bombsimon]

You can use the issues section to configure files to include/exclude:

issues:
  exclude-rules:
    - path-except: _test\.go
      linters:
        - forbidigo

[powerman]

Yes, but this will exclude all rules of the linter, not just this one.
Probably it's possible to except using text: instead of linters:, but it feels like a workaround: error message text to match may change in future versions, linter will still spend time applying this rule to non-tests, etc.