StopwordsItem item = new StopwordsItem(1, "or");
        assertNull(item.getNewInput());

        item.setNewInput("nor");
        assertEquals("nor", item.getNewInput());

        item.setNewInput("");
        assertEquals("", item.getNewInput());

        item.setNewInput(null);
        assertNull(item.getNewInput());
    }

    public void test_getInput() {
        // Test getInput method

        ProtwordsItem item = new ProtwordsItem(1, "word");
        assertNull(item.getNewInput());

        item.setNewInput("newword");
        assertEquals("newword", item.getNewInput());
    }

    public void test_setNewInput() {
        // Test setNewInput method
        ProtwordsItem item = new ProtwordsItem(1, "word");

        item.setNewInput("updatedword");

                        // update
                        writer.write(item.toLineString());
                        writer.write(Constants.LINE_SEPARATOR);
                        return new ProtwordsItem(item.getId(), item.getNewInput());
                    }
                    return null;
                } finally {
                    item.setNewInput(null);
                }
            } catch (final IOException e) {

                        // update
                        writer.write(item.toLineString());
                        writer.write(Constants.LINE_SEPARATOR);
                        return new StopwordsItem(item.getId(), item.getNewInput());
                    }
                    return null;
                } finally {
                    item.setNewInput(null);
                }
            } catch (final IOException e) {

                        writer.write(item.toLineString());
                        writer.write(Constants.LINE_SEPARATOR);
                        return new StemmerOverrideItem(item.getId(), item.getNewInput(), item.getNewOutput());
                    }
                    return null;
                } finally {
                    item.setNewInput(null);
                    item.setNewOutput(null);