@Before
  public void before() throws Exception {
    Properties props = new Properties();
    props.setProperty(DISTRIBUTED_SYSTEM_ID, "" + 1);
    locatorSite1 = clusterStartupRule.startLocatorVM(0, props);

    // Connect Gfsh to locator.
    gfsh.connectAndVerify(locatorSite1);
  }
DUnit tests for 'create gateway-receiver' command.
geode-wan/src/distributedTest/java/org/apache/geode/internal/cache/wan/wancommand/CreateGatewayReceiverCommandDUnitTest.java