@Test
  public void propertiesShouldCreateValidCache() throws Exception {
    Properties properties = loadProperties();
    CacheFactory cacheFactory = new CacheFactory(properties);
    cache = cacheFactory.create();
    assertThat(cache).isNotNull();
  }
test that the gemfire.properties generated by default is able to start a server
geode-core/src/integrationTest/java/org/apache/geode/distributed/internal/DefaultPropertiesGeneratorIntegrationTest.java