@Test
public void negativeQuadding() {

    PDAcroForm mergeThis = new PDAcroForm(new PDDocument());
    mergeThis.setQuadding(-2);
    PDAcroForm intoThis = new PDAcroForm(new PDDocument());
    AcroFormUtils.mergeDefaults(mergeThis, intoThis);
    assertEquals(0, intoThis.getQuadding());
}