@Test
public void testSetInvalidPurgeFilterInterval() {

    final Configuration c = new Configuration();
    assertThatThrownBy(() -> c.setPurgeFilterInterval(-1))
            .isInstanceOf(IllegalArgumentException.class)
            .hasMessage("purgeFilterIntervalMillis: -1 (expected: > 0)");
    assertThatThrownBy(() -> c.setPurgeFilterInterval(0))
            .isInstanceOf(IllegalArgumentException.class)
            .hasMessage("purgeFilterIntervalMillis: 0 (expected: > 0)");
}