@Test
public void testGetAllEntities() throws Exception {

  Set<TimelineEntity> result = reader.getEntities(
      new TimelineReaderContext("cluster1", "user1", "flow1", 1L, "app1",
      "app", null), new TimelineEntityFilters.Builder().build(),
      new TimelineDataToRetrieve(null, null, EnumSet.of(Field.ALL), null,
      null, null));
  // All 4 entities will be returned
  Assert.assertEquals(4, result.size());
}