public void testRemoveStyle() {
   doc.addStyle(STYLE_NAME, null);
   assertNotNull(doc.getStyle(STYLE_NAME));
   doc.removeStyle(STYLE_NAME);
   assertNull(doc.getStyle(STYLE_NAME));
 }
 public void testGetStyle() {
   Style aStyle = styles.addStyle(STYLE_NAME, null);
   assertSame(aStyle, doc.getStyle(STYLE_NAME));
 }