@Test
public void nullInput() {

    try {
        comparisonWriter.write((Boolean) null, null, true);
        fail();
    } catch (Exception ignored) {
    }
    try {
        comparisonWriter.write((LimitViolation) null, null, true);
        fail();
    } catch (Exception ignored) {
    }
    try {
        comparisonWriter.write((List<String>) null, null, true);
        fail();
    } catch (Exception ignored) {
    }
}