Better support for testing from engines

guest271314 guest271314 at
Tue Jul 2 06:58:13 UTC 2019

What are you trying to test relevant to modules?  It is already possible to
play `<video>` from within a module. What "trusted" events are you trying
to dispatch at `HTMLMediaElement` within a module?

On Mon, Jul 1, 2019 at 5:56 PM Adam Eisenreich <akxe at> wrote:

> As we are looking into the bright future when we will have native module
> support, but how will we test it then? As of now the only way to mock any
> module function, classes or other exports are by way of exploiting the fact
> that webpack (or similar) is in the middle.
> Things to think about:
> - Mocking modules
> - Accessing private private fields/ variables (This might be
> controversial, but many would love that feature)
> - Ability to dispatch "trusted" events (needed for any video/audio or
> similar APIs)
> I thing that having some kind of `'testing'` mode the same way as we do
> have `'strict'` mode might be a way to solve it. The `'testing'` keyword is
> ignored unless, it is included via `<script>`, or an other `'testing'`
> module.
> The closest we have now is puppeteer, but would it be able to do all of it
> at reasonable speed? Also how about cross-platform?
> What are your thoughts on this topic, have I missed any
> important hard/impossible to test thing? Or library that does some woodoo?
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