Support running tests in parallel

We are using Radish to describe features executed by Selenium, and being able to run in parallel is essential for delivering results in a timely fashion.

I suspect a --processes argument to radish would probably be the correct interface for this.

I will investigate implementing this on my own, but if there’s any other work out there to support this, I would love to hear about it.

[fudomunro]

OK, I’ll begin looking into refactoring the generic functionality out of the wrapper into something we can share. No promises, but hopefully we can share something useful.

[Vlaaaaaaad]

Threads for each scenario( including a thread for each scenario in Scenario Outlines! ) is also what https://github.com/grosser/parallel_tests is doing.

Since the idea behind having parallel tests is that you want to minimize the run time as much as possible, I think the complications are worth it. A switch between “run a thread per scenario” and “run a thread per feature” would be ideal( see --group-by in parallel_tests).