@Test
  public void shouldInsert() {
    Event event = new Event();
    String insertId = "savedId";

    LogEntry logEntry = new LogEntry();

    LogEntry saved = new LogEntry();
    saved.setId(insertId);

    given(mapper.mapTo(event)).willReturn(logEntry);
    given(repository.save(logEntry)).willReturn(saved);

    InsertResponse insertResponse = service.insert(event);
    assertNotNull(insertResponse);
    assertEquals(insertId, insertResponse.getCreatedId());
  }