checkSendDelta(view, ch.channel, HashedVersion.unsigned(0), WAVELET_ID_1);
view.checkExpectationsSatisified();
checkAckDelta(view, ch.channel, ch.listener, 1, 1, SIG1);
// Drop the empty snapshot sent by the server.
ObservableWaveletData snapshot = createSnapshot(WAVELET_ID_1, 0, NOSIG);
HashedVersion committed = HashedVersion.unsigned(0);
viewListener.onSnapshot(snapshot.getWaveletId(), snapshot, committed, null);
muxListener.verifyNoMoreInteractions();
// Now CC should have sent the first client delta so it's acked.
view.checkExpectationsSatisified();