tree c7adc1c496532ae7d637c9f3c6fd0e95857f15e1
parent ce1c219c89b3d885d0a4ca809cd6fe4754c6aa1d
author Gianfranco Valentino <gevalentino@google.com> 1561510585 +0000
committer CQ bot account: commit-bot@chromium.org <commit-bot@chromium.org> 1561510585 +0000

[zircon][core-test]: Fix flaky ChannelInternalTest

There is a race condition in a channel call when the channel is written
to and the thread state is set to blocked. Instead of just asserting
for the thread state, we wait for the channel to become readable, and
then wait for the thread state to be updated.
Essentially the expectation the thread is blocked switches to the thread
will eventually become blocked when issuing a channel_call.

ZX-4422 #done

TEST=channel-test

Change-Id: Iffa110f67a63cc6ba450631ceafa7430aa44f885