test: improve tests for unhandled rejections #4453
Merged
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Details
The current tests for #4451 and #3827 are somewhat janky – they occasionally log to the DevTools console which is very distracting.
Luckily I already had some code to capture unhandled rejections/errors, so I just extracted this into a general-purpose utility so that we can improve this test.
This is spun off from #4452 to avoid bloating that PR.
Does this pull request introduce a breaking change?
Does this pull request introduce an observable change?