@Test
public void sseDefaultValueArgumentWithoutRequestParameter() throws Exception {
List<SSEvent> events = ControllerUtil.performSseRequest(mockMvc, "sseProvider",
"message4", null, null, null, true);
assertThat(events).hasSize(1);
SSEvent event = events.get(0);
assertThat(event.getEvent()).isNull();
assertThat(event.getComment()).isNull();
assertThat(event.getData()).isEqualTo("2");
assertThat(event.getId()).isNull();
assertThat(event.getRetry()).isNull();
}