@Test
  public void constructorSetsFields() {
    TransactionStoppedEvent event =
        new TransactionStoppedEvent(
            CHARGING_STATION_ID,
            TRANSACTION_ID,
            IDENTIFYING_TOKEN,
            METER_STOP,
            FIVE_MINUTES_AGO,
            NULL_USER_IDENTITY_CONTEXT);

    assertEquals(CHARGING_STATION_ID, event.getChargingStationId());
    assertEquals(TRANSACTION_ID, event.getTransactionId());
    assertEquals(IDENTIFYING_TOKEN, event.getIdTag());
    assertEquals(METER_STOP, event.getMeterStop());
    assertEquals(FIVE_MINUTES_AGO, event.getTimestamp());
    assertEquals(NULL_USER_IDENTITY_CONTEXT, event.getIdentityContext());
  }