@Test
public void aggregateAuthenticationFailuresWithoutDittoRuntimeExceptions() {

    final List<AuthenticationResult> authenticationResults =
            Collections.singletonList(DefaultAuthenticationResult.failed(KNOWN_DITTO_HEADERS, new IllegalStateException("Not a DRE")));
    assertThatExceptionOfType(IllegalArgumentException.class)
            .isThrownBy(() -> underTest.aggregateAuthenticationFailures(authenticationResults));
}