StyleConstants.setUnderline(attrs, true);
doc.insertString(0, "Hello word!", attrs);
pane.setCaretPosition(4);
attrs = new SimpleAttributeSet();
StyleConstants.setIcon(attrs, MetalIconFactory.getTreeFolderIcon());
doc.insertString(4, " ", attrs);
pane.setCaretPosition(4);
doc.insertString(4, "\n", kit.getInputAttributes());
assertFalse(StyleConstants.isUnderline(kit.getInputAttributes()));
pane.setCaretPosition(5);
assertFalse(StyleConstants.isUnderline(kit.getInputAttributes()));