@Test
  public void testDefaultLocatorUpdateInterval() {
    long updateLocatorInterval = pool.getPingInterval();
    source.start(pool);
    assertThat(source.getLocatorUpdateInterval()).isEqualTo(updateLocatorInterval);
  }
This tests that discovery works even after one of two locators was shut down
geode-core/src/integrationTest/java/org/apache/geode/cache/client/internal/AutoConnectionSourceImplIntegrationTest.java