How to rerun single failing test by name

[jmarceli]

Is it possible to re-run single test directly from Guard console?

I know I can do this from command line with:

ruby -Ilib:test test/path/to/my_controller.rb -n test_name

but it would be really handy if I could just type something into Guard console e.g.

guard-minitest -n test_name

or something like that.

[e2]

I think you can pass it through Minitest's environment variable TESTOPTS, but you'd have to probably restart guard.

Maybe it's enough if you type in in the console:

ENV['TESTOPTS'] = '--name test_name'

And then just save the file with the test name?

[jmarceli]

I've tried your approach but with no luck. I'm not sure if I do this the right way.
After failing test I write in Guard console:

[1] guard(main)> ENV['TESTOPTS'] = '--name test_my_test_function'

But then I just get:

=> "--name test_my_test_function"

as an output and nothing else.

[e2]

But then I just get:

Yes - nothing will happen, because that line just sets the environment variable guard's process.

You need to MODIFY the file, so guard picks up the change and runs minitest - minitest should then check the environment variable - and run only the test matching the name.

It's as if on an ordinary commandline you ran:

TESTOPTS="-n test_name" ruby -Ilib:test test/path/to/my_controller.rb

The problem with the above workaround is (if it works): you have to clear the ENV every time to run all the tests.

In RSpec, you can just tell rspec which tests to run/skip by using the "focus" feature. Since there's no such thing in Minitest (as far as I know), probably the best option is to set and clear the environment variable.

Simply put, Minitest doesn't have a runner like RSpec does - so it's hard to tell guard to tell guard-minitest to use a special option when you want it to.

Instead, you may use the --cli option, e.g.:

guard :minitest, cli: '--name test_name' do
  # ...
end

and Guard should restart when you change the file anyway.

Hope that helps.

[e2]

You can also probably just add the Pry command yourself, by adding Ruby code to your ~/.guard.rb file.

Here's what a Pry plugin looks like for the change command:

https://github.com/guard/guard/blob/master/lib/guard/commands/change.rb

Here's more about the currently supported commands: https://github.com/guard/guard/wiki/Interacting-with-Guard

[e2]

Also, the easiest way is to just probably copy the just test you want being run to a new file.

[jmarceli]

Thanks for your assistance. I see that (probably) easiest way to do what I want is to switch from minitest to RSpec (where it is built in functionality). That's a pity because I really like minitest syntax :(

[e2]

Try: https://github.com/JoshCheek/mrspec