public void test_equals() {
        String[] inputs1 = { "a", "b" };
        String[] inputs2 = { "b", "a" }; // Different order
        String[] inputs3 = { "c", "d" };

        CharMappingItem item1 = new CharMappingItem(1L, inputs1, "output");
        CharMappingItem item2 = new CharMappingItem(2L, inputs2, "output");
        CharMappingItem item3 = new CharMappingItem(3L, inputs3, "output");

        returnedInputs[0] = "modified";

        // Get again and verify not modified
        String[] inputs2 = item.getInputs();
        assertEquals("a", inputs2[0]);
        assertEquals("b", inputs2[1]);
        assertEquals("c", inputs2[2]);
    }

    @Test
    public void test_defensiveCopy_outputs() {
        // Test that getOutputs() returns defensive copy

     * @param inputs  The input words.
     * @param outputs The output synonyms.
     */
    public SynonymItem(final long id, final String[] inputs, final String[] outputs) {
        this.id = id;
        this.inputs = inputs;
        this.outputs = outputs;

        if (id == 0) {
            // create
            newInputs = inputs;
            newOutputs = outputs;
        }
    }

     *
     * @param id the unique identifier for this mapping item
     * @param inputs array of input character sequences that will be mapped to the output
     * @param output the output character sequence that inputs will be mapped to
     */
    public CharMappingItem(final long id, final String[] inputs, final String output) {
        this.id = id;
        this.inputs = inputs;

        }
    }

    /**
     * Reloads the character mapping items from the provided input stream.
     * Parses mapping rules in the format: input1,input2,... => output
     *
     * @param updater the mapping updater to use for writing changes, or null for read-only reload
     * @param in the input stream to read the mapping data from
     */

        // Test characters that need special encoding
        String input1 = "http://example.com/文档"; // Unicode characters
        String result1 = crawlingInfoHelper.generateId(input1);
        assertNotNull(result1);
        assertEquals(128, result1.length());

        String input2 = "http://example.com/path with spaces";
        String result2 = crawlingInfoHelper.generateId(input2);
        assertNotNull(result2);

                    inputs = new String[inputStrings.size()];
                    for (int i = 0; i < inputs.length; i++) {
                        inputs[i] = unescape(inputStrings.get(i)).trim();
                    }

                    if (inputs.length > 0) {
                        id++;
                        final SynonymItem item = new SynonymItem(id, inputs, inputs);

        assertEquals("StopwordsItem [id=123, inputs=word, newInputs=null]", item.toString());

        item.setNewInput("updated");
        assertEquals("StopwordsItem [id=123, inputs=word, newInputs=updated]", item.toString());

        item.setNewInput("");
        assertEquals("StopwordsItem [id=123, inputs=word, newInputs=]", item.toString());
    }

    @Test

        assertEquals("ProtwordsItem [id=123, inputs=testword, newInputs=null]", item.toString());

        item.setNewInput("newword");
        assertEquals("ProtwordsItem [id=123, inputs=testword, newInputs=newword]", item.toString());

        ProtwordsItem item2 = new ProtwordsItem(0, "createword");
        assertEquals("ProtwordsItem [id=0, inputs=createword, newInputs=createword]", item2.toString());
    }

     * @return the input value
     */
    public String getInput() {
        return input;
    }

    /**
     * Gets the input value or empty string if null.
     * @return the input value or empty string
     */
    public String getInputValue() {
        if (input == null) {
            return StringUtil.EMPTY;
        }
        return input;
    }

    /**