tree 33019d7b6561afe2e9371e1979b4fbc02a82b980
parent 4bc8e9c00e54267fbfe7ffdfb1eca93f987324e1
author Paul Berry <paulberry@google.com> 1558631842 -0700
committer GitHub <noreply@github.com> 1558631842 -0700
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Pass an async callback to testWidgets. (#33260)

The dart analyzer fails to warn about missing returns in function expressions due to a bug that has been
fixed but not yet rolled into Flutter (see
https://dart-review.googlesource.com/c/sdk/+/100301).  So it failed to catch that https://github.com/flutter/flutter/pull/33217 accidentally introduced a call to `testWidgets` that passed it a synchronous callback.