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Break-on-exception doesn't work for forked promises

Chrome's break-on-exception doesn't always break when exceptions are thrown in a promise callback.

it('confuses me', () => {
  let start = new Promise(r => setTimeout(r, 10))
  let forked = delay.then(() => { throw "huh" })
  return wantBroken ? forked : start
})

Returning start works fine, but returning forked won't break (but it does print to the console). If you add a catch block to runTest, it catches the error, so it's not like the promise is just swallowing it.

I've also noticed that bluebird promises don't have this issue. The problem with bluebird is that stack traces are very wrong (even with longStackTrace on).

I think the ideal would be to figure out how bluebird does it, and replicate.

Ideas

  • Better distribution of tests between workers
  • Zoom into to a single suite (split tests across workers)
  • Detect flaky tests
  • Auto-run tests based on file changes/dependency graph

v1

  • run webpack server for assets
  • supports describe/it/before/after syntax
  • Request test suite to run
  • Load suite
  • Run suite, report result to server
  • Display results in head
  • Run failed tests in head
  • Get all suites in directory
  • Launch workers

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