func agentRpcTestWaitSlavePosition(ctx context.Context, t *testing.T, client tmclient.TabletManagerClient, ti *topo.TabletInfo) {
rs, err := client.WaitSlavePosition(ctx, ti, testReplicationPosition, testWaitSlavePositionWaitTimeout)
compareError(t, "WaitSlavePosition", err, rs, testReplicationStatus)
}