@Override
  public Health check() {
    if (isConnectedToDB()) {
      return Health.GREEN;
    }
    return RED_HEALTH;
  }
@Test
  public void status_is_GREEN_without_cause_if_isAlive_returns_1() {
    when(isAliveMapper.isAlive()).thenReturn(1);

    Health health = underTest.check();

    assertThat(health).isEqualTo(Health.GREEN);
  }