Make test registration asynchronous

[jvilk]

OK, tests are launched properly now, but they are registered on page load.

If we can figure out how to register tests asynchronously, then we can trigger test registration after loading in any test files for #19.

Right now, the issue is that Karma's Jasmine adapter appears to trigger Jasmine tests once page load finishes. I wonder if there is a way to trigger it manually?

[jvilk]

It looks like window.__karma__.start is the generic function that Karma automatically triggers which kicks off unit tests.

https://github.com/karma-runner/karma-jasmine/blob/master/src/adapter.wrapper#L6

[jvilk]

I figured it out.

We need to pretend that we're using RequireJS. This prevents Karma from triggering the tests until we explicitly run __karma__.start().

One issue: We won't be able to use require in the tests. But since we batch require in the test setup function, we're good. 😄