Ensure @ember/test-helpers promise based helpers never create a run loop for resolving the promise.
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cc/ @drewlee |
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runHooks results in isSettled() being false when resolved@ember/test-helpers promise based helpers never create a run loop for resolving the promise.
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scalvert
approved these changes
Dec 4, 2020
This commit introduces a number of (currently failing) tests that are
attempting to confirm that after running various public methods that
we are in a settled state.
The tests all fail at the moment, because the `Promise.all` that is done
wihtin `runHooks` does **not** go through our custom
`RSVP.configure('async', fn)`. This is because the `async` hook in RSVP
only receives a second argument (the `promise` argument) in some
circumstances but not in the case where the parent promise is not in the
pending state ([this branch in
RSVP](https://github.com/tildeio/rsvp.js/blob/429ade2379dfbfb6e2c6f453b4aeb642515dbb74/lib/rsvp/then.js#L28-L33)).
`RSVP.Promise.all([undefined, undefined])` is considered settled
immediately, so `RSVP.Promise.all().then(fn)` returns a promise that
will **not** get our custom promise resolution scheduling.
Since our custom scheduling is not being used here, the normal `RSVP`
integration is used which means that the promise will resolve in the
`actions` queue of the run loop. Ultimately, this is why `isSettled()`
returns false when `await runHooks(...)` completes: a run loop was
started in order to resolve the `runHooks` promise, but it has not
completed yet.
We no longer support Ember < 3.8, so this can be safely removed.
* Removes `RSVP.configure('async', fn)` override
* Updates internals to use native promises where available
* Leaves IE11 support broken (will be fixed in a follow up commit)
* Exports `Promise` from `-utils` (instead of `_Promise`)
Ember should be ensuring an instance on its own here (the act of setting outletState should ensureInstance, since we know we need to render), but it is not. This really needs to be fixed in Ember (and then we can guard this `ensureInstance` call for newer Ember versions).
This ensures that we support environments without a native `Promise` but still avoid using the manually configured `Ember.RSVP` runloop integration.
This ensures that when folks do something like this:
```js
if (typeof Promise === 'undefined') {
self.Promise = Ember.RSVP.Promise;
}
```
We still use a Promise that is **not** configured on the run loop.
Fixes issues with IE11 compat.
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This is normally handled for folks by ember-qunit, but @ember/test-helpers has to handle it for itself. We need to get this fixed over in ember-cli...
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This removes the custom
RSVP.configure('async', fn)that we have used for a while (introduced in 0da35f4) in favor of using nativePromisewhenever possible and falling back to a separately loaded (viaember-auto-import)es6-promisepolyfill when native Promise is not available.This does increase the overall size of
assets/test-support.jsby ~ 27kb (see the es6-promise README), but since that doesn't really affect any production application situations it should be fine. Once we drop support for browsers that do not have a nativePromisewe can removeember-auto-importand oures6-promisepolyfill.In order to test that this implementation functions properly in IE11, I had to get the testing infrastructure back into a state where IE11 can run tests. That required a number of changes:
Closes #956
Fixes #947