v3.0.20

• Test tools: a failing step in a test chain no longer hangs the test.
  • _chainCapture ran each step in Chain.capture with an onError,
    which makes it an error zone. An error can't leave an error zone, so a
    failing expect inside thenChain (e.g. selectFirstWhereUntil not
    finding its element) was reported as an uncaught error — the test showed
    as failed — while the future the test body awaited never completed. The
    body then hung until the test's own timeout, holding up every suite
    after it.
  • Now Chain.capture(errorZone: false): the chain is still tracked, and
    the error completes the awaited future.
  • New bones_ui_test_chain_test.dart covers it.