@Test
public void tryToCheckIfEntriesSizeIsGreaterThanNegativeLong() {

    final long negativeLong = -3L;
    final ImmutableDittoHeaders underTest = ImmutableDittoHeaders.of(
            Maps.newHashMap(DittoHeaderDefinition.CORRELATION_ID.getKey(), KNOWN_CORRELATION_ID));
    assertThatExceptionOfType(IllegalArgumentException.class)
            .isThrownBy(() -> underTest.isEntriesSizeGreaterThan(negativeLong))
            .withMessage("The size to compare to must not be negative but it was <%s>!", negativeLong)
            .withNoCause();
}