Test components

[jklepatch]

#1133

[honestbonsai]

Thanks! Will get this reviewed.

[honestbonsai]

What are these for? I ran your tests locally without any plugins and it still worked.

I suggest removing this if they are not needed.

[honestbonsai]

Stage-0 seems like it's a bit much to me, do you know what JS feature exactly this is adding that the tests need?

I did try running without stage-0 and it didn't work.

[jklepatch]

At least one of the plugin is for async / await, the other I dont know. As for stage-0, no I dont know exactly which features are needed.  In the future we could totally get rid of stage-0 by upgrading to babel 7.x and add missing plugins (for babel7.x, stage-0 is deprecated, there are only plugins available). Generally speaking I would like to have the same babel configuration that for the code of the components we are testing.

[honestbonsai]

@jklepatch Yea I see what you mean, .compilerc is using stage-0, so the tests are going to have to use stage-0 as well. I'm ok with keeping it in since it breaks the tests, so something is relying on it.

However, the tests you wrote don't utilize the plugins at all, so I still think it would help to simplify this PR by removing them. In the future, when the tests require the use of one of the plugins we can put it back in.