public DefaultProbe(Map<String, String> props) {
    this("Default probe: IP presence", props);
  }
@Test
  public void testDefaultProbe() {
    // component instance has a good hostname, so probe will eventually succeed
    // whether or not DNS checking is enabled
    ComponentInstance componentInstance =
        createMockComponentInstance("example.com");
    checkPingResults(probe, componentInstance, false);

    // component instance has a bad hostname, so probe will fail when DNS
    // checking is enabled
    componentInstance = createMockComponentInstance("bad.dns.test");
    checkPingResults(probe, componentInstance, probe.isDnsCheckEnabled());
  }