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[local_auth] Fix default deviceSupportsBiometrics #5321

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stuartmorgan-g
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Fixes a regression from the federation of local_auth in the default
method channel implementation of deviceSupportsBiometrics. It needs to
use the unfiltered method channel list in order to work correctly, not
the results of the Dart method that filterns out the sentinel for
unenrolled devices.

Also adds some implementation comments about how this works, since
it's very non-obvious.

See #5309 (comment)
for context.

Pre-launch Checklist

  • I read the Contributor Guide and followed the process outlined there for submitting PRs.
  • I read the Tree Hygiene wiki page, which explains my responsibilities.
  • I read and followed the relevant style guides and ran the auto-formatter. (Unlike the flutter/flutter repo, the flutter/plugins repo does use dart format.)
  • I signed the CLA.
  • The title of the PR starts with the name of the plugin surrounded by square brackets, e.g. [shared_preferences]
  • I listed at least one issue that this PR fixes in the description above.
  • I updated pubspec.yaml with an appropriate new version according to the pub versioning philosophy, or this PR is exempt from version changes.
  • I updated CHANGELOG.md to add a description of the change, following repository CHANGELOG style.
  • I updated/added relevant documentation (doc comments with ///).
  • I added new tests to check the change I am making, or this PR is test-exempt.
  • All existing and new tests are passing.

Fixes a regression from the federation of local_auth in the default
method channel implementation of `deviceSupportsBiometrics`. It needs to
use the unfiltered method channel list in order to work correctly, not
the results of the Dart method that filterns out the sentinel for
unenrolled devices.

See flutter#5309 (comment)
for context.
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@BeMacized BeMacized left a comment

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LGTM, of course assuming you remove the one now unused import in the test file that fails the analyzer checks.

@stuartmorgan-g
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Doh

@stuartmorgan-g stuartmorgan-g added the waiting for tree to go green (Use "autosubmit") This PR is approved and tested, but waiting for the tree to be green to land. label Apr 21, 2022
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This pull request is not suitable for automatic merging in its current state.

  • This commit is not mergeable and has conflicts. Please rebase your PR and fix all the conflicts.

@fluttergithubbot fluttergithubbot removed the waiting for tree to go green (Use "autosubmit") This PR is approved and tested, but waiting for the tree to be green to land. label Apr 21, 2022
@stuartmorgan-g stuartmorgan-g added the waiting for tree to go green (Use "autosubmit") This PR is approved and tested, but waiting for the tree to be green to land. label Apr 22, 2022
@fluttergithubbot fluttergithubbot merged commit 83269f3 into flutter:main Apr 22, 2022
engine-flutter-autoroll added a commit to engine-flutter-autoroll/flutter that referenced this pull request Apr 22, 2022
mauricioluz pushed a commit to mauricioluz/plugins that referenced this pull request Jan 26, 2023
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3 participants