tree a0764a7e0fc0a0a7c0c5bbfb39b91b43f649c3bc
parent 7b1099d1a6de2345d2ef8f11d9451949e842defe
author James D. Lin <jamesderlin@users.noreply.github.com> 1592600318 -0700
committer GitHub <noreply@github.com> 1592600318 -0700
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Try to fix some flaky tests (#150)

The suite of common tests repeatedly opens `IOSink`s and
`StreamController`s but closed them only the first time.  I don't
definitively know that this was the cause for many of the test flakes
related to local filesystems, but with this change, I haven't hit
file-not-found flakes locally after several hundred iterations of
running `chroot_test.dart`.