tree 545346c5efb3a0501ee6734edd22cc1c44453170
parent 00ec3cdccb3c39b86c033b0ab5748564001ab5b9
author stuartmorgan <stuartmorgan@google.com> 1617663825 -0700
committer GitHub <noreply@github.com> 1617663825 -0400
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[local_auth] Fix callback thread handling (#3778)

Ensure that all auth replies, which are sent on an internal framework queue per documentation, are dispatched back to the main thread for handling, as all resulting operations (method channel callbacks, display of UI) are things that must be done on the main thread

In order to test this, sets up local_auth with XCTest-based tests, and adds the ability to inject a mock LAContext. (This does not do full unit test backfill, to limit the scope of the PR.)

Fixes flutter/flutter#47465