Filter suites/tests using the mocha grep option

[dej611]

I'm using karma programmatically so I'm generating the karma configuration file dynamically.
I was trying to add the ability to choose the pattern to pass to karma-mocha to filter the suite/tests to execute, so I did read the following in the README:

module.exports = function(config) {
  config.set({
    ...
    client: {
      args: ['--grep', '<pattern>'],
      ...
    }
  });
};

But when I added that to my configuration it didn't work.

I've tried to update both karma and karma-mocha to the latest versions but no luck.

I've just ended up looking at the mocha API to figure out how to pass the grep option and it worked as a charm.
I thought it may be useful to share the thing back.

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[dignifiedquire]

Thanks. Could you please update the commit message to follow our convention?

[googlebot]

CLAs look good, thanks!

[dej611]

Sure. Is this better?

[dignifiedquire]

Great thanks

[maksimr]

@dej611 Thanks for PR.

But clinet: {args: ['--grep', '...']} should work if it's doesn't work it's bug.
Could you create gist which reproduce problem

[dej611]

I know, I did debug the code on both karma and karma-mocha side but on my environment it wasn't passed as client arguments. Passing the grep pattern using the mocha API worked.

I'll try to reproduce the issue on a gist.