commit 8c153ac8980737c4292ae1c019c69471607b3859
author Kirill Grouchnikov <kirillg@google.com> Tue Oct 11 11:24:34 2016 -0400
committer Kirill Grouchnikov <kirillg@google.com> Thu Oct 20 09:55:41 2016 -0400
tree 9d22c59ad42f7123bfbab93a02f9159346b0840d
parent 2a6de19abd05a25e956cd9a62e7069480637ccc4

Remove flakiness / race condition in snackbar tests

Instead of artifical timeouts and race condition in waiting
for snackbar's dismissal in a loop, use Espresso's IdlingResource
to reliably wait until the snackbar has been shown or
dismissed.

Also align the API surface of snackbar's callbacks with DrawerLayout's
listeners, allowing registering more than one callback, and removing
registered callbacks.

Bug: 32022732
Test: ./gradlew support-design:connectedCheck --info --daemon -Pandroid.testInstrumentationRunnerArguments.class=android.support.design.widget.CustomSnackbarTest
Test: ./gradlew support-design:connectedCheck --info --daemon -Pandroid.testInstrumentationRunnerArguments.class=android.support.design.widget.SnackbarTest
Change-Id: If8f8415b6453d75cb24a022b2d7d676f7649542c