Thank you for the feedback Rodrigo.
I think it is worth to explore possibilities for JavaScript tests. I don’t
see why Rails could not integrate better with the test ecosystem in the
JavaScript community and I think it is a valuable direction to take. We
didn’t included anything in this line in 5.1 because we didn’t have someone
the champion this feature but we would be happy to have something for a
next release.
So, now that the ground base is set for better relationship with the
JavaScript community it is just a matter of someone willing to explore how
the test history will be.
Looking forward to see what is coming on this front!
On Thu, Feb 23, 2017 at 3:59 PM Rodrigo Rosenfeld Rosas
wrote:
> Hi, I was happy to read the new features for Rails 5.1 here:
>
> http://weblog.rubyonrails.org/2017/2/23/Rails-5-1-beta1/
>
> Specially as I have already been using webpack,npm and yarn for a while
> (well, yarn just recently, of course) and I'm pretty happy with the
> results. My main motivations were client-side performance improvements
> and source-maps support, but there were many more reasons I chose
> webpack as stated in the Goals section of this article:
>
>
> http://rosenfeld.herokuapp.com/en/articles/2016-02-29-getting-an-spa-to-load-the-fastest-possible-way-and-how-webpack-can-help-you
>
> As you can guess, I'm pretty happy with the direction Rails is taking as
> an opinionated system (even though I'm moving towards a discrete system
> I still see value in frameworks like Rails that are full featured and
> opinionated, specially for new or small-sized applications).
>
> There's just one thing I found missing in this release notes and I don't
> want to sound critical. It's the other way around. As I said, I'm pretty
> happy with the direction Rails is taking, so this is a suggestion to
> improve it further if someone is interested on working or discussing
> this topic. I don't have time for that so if anyone is interested on
> making it happen feel free to disregard this suggestion.
>
> I've been writing Single Page Applications since 2009 and even though
> I've tried testing them through solutions such as Capybara (and similar
> solutions for other languages such as Selenium) it doesn't really scale.
> At some point I completely dropped Capybara because I found that those
> specs were hardly executed since they were disabled by default because
> they were simply too slow.
>
> I'm not saying adding Capybara to Rails was a bad idea. I do see value
> in it and I'm happy Rails adds it by default. I'm just saying that I
> feel like Rails isn't really aware of how SPA applications are developed
> in the wide. While browser tests allow you to test JavaScript they are
> not the only way. Using JavaScript test frameworks is what actually
> enable SPA testing to succeed. Since Rails 5.1 is supporting SPA I think
> it would be awesome if it also integrated some testing framework, maybe
> on top of Karma.js, for fulfilling that purpose and stablishing good
> practices just like it does for Ruby code.
>
> https://karma-runner.github.io/1.0/index.html
>
> Karma already exists for a while and looks like a mature solution to me,
> and could be integrated to several JavaScript frameworks, and tests can
> be run from the console, making it easier to integrate to CIs. Maybe
> Rails could adopt some well known framework such as Jasmine or Mocha for
> creating the stubs for new JS files.
>
> Well, this is just an idea. I use my own JS test framework in our
> application, that's why I don't have a strong opinion on those test
> runners mentioned above, but I had some experience with them and they
> should be good enough for most applications.
>
> Once again, thanks a lot for this 5.1 release. It seems like Rails is
> getting exciting again :)
>
> Best,
>
> Rodrigo.
>
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