if ((flags & SmbConstants.O_CREAT) == SmbConstants.O_CREAT) {
            // create it if necessary
            if ((flags & SmbConstants.O_EXCL) == SmbConstants.O_EXCL) {
                // fail if already exists
                this.openFunction = OPEN_FN_CREATE | OPEN_FN_FAIL_IF_EXISTS;
            } else {
                this.openFunction = OPEN_FN_CREATE | OPEN_FN_OPEN;
            }
        } else {

        // It mainly tests the decryption logic path
        Key key = new KerberosKey(null, new byte[16], KerberosConstants.RC4_ENC_TYPE, 0);
        byte[] data = new byte[32]; // Dummy data
        // The test will likely fail with "Checksum failed" as the data is not properly encrypted
        // but it proves the decryption path is taken.

**Covered Extractors**:
- ZipExtractor
- TarExtractor

**Test Count**: 12 tests

**Key Scenarios**:
- ✅ Descriptive error messages for invalid archives
- ✅ Continues processing when some entries fail
- ✅ Handles empty archives gracefully
- ✅ Mixed valid/invalid entries processed correctly
- ✅ Null input stream validation

---

### 4. AbstractExtractorTest.java

    <example>${fe:formatCode("L", "prettyprint", doc.mimetype, doc.content_description)}</example>
  </function>

  <function>
    <description>Mask e-mail address.</description>
    <name>maskEmail</name>
    <function-class>org.codelibs.fess.taglib.FessFunctions</function-class>
    <function-signature>java.lang.String maskEmail(java.lang.String)</function-signature>

        accessResultDataImpl.setTransformerName("transformer");

        setBaseDir();

        try {
            final Object obj = fileTransformer.getData(accessResultDataImpl);
            fail();
        } catch (final CrawlerSystemException e) {}
    }

    public void test_getData_nullData() throws Exception {
        final AccessResultDataImpl accessResultDataImpl = new AccessResultDataImpl();

        SmbTreeImpl tree = new SmbTreeImpl(session, "SHARE", "A:");
        SmbTreeImpl unwrapped = tree.unwrap(SmbTreeImpl.class);
        assertEquals(tree, unwrapped);
        // Test unwrapping to a non-assignable type should fail
        assertThrows(ClassCastException.class, () -> {
            // Create a mock class that extends SmbTree but is not assignable from SmbTreeImpl
            class CustomSmbTree extends SmbTreeImpl {

        // However, we'll try to read it safely for compatibility
        if (this.byteCount > bufferIndex - start) {
            try {
                // Attempt to read nativeFileSystem, but don't fail if there are issues
                final int fsLen = this.byteCount - (bufferIndex - start);
                if (fsLen > 0 && fsLen < 256) { // Sanity check on length

     * If file exists, supersede it. Otherwise create the file
     */
    public static final int FILE_SUPERSEDE = 0x0;
    /**
     * If file exists, open it. Otherwise fail
     */
    public static final int FILE_OPEN = 0x1;
    /**
     * If file exists, fail. Otherwise create the file
     */
    public static final int FILE_CREATE = 0x2;
    /**
     * If file exists, open it. Otherwise create the file
     */

        // Arrange
        WriterThread w = new WriterThread();
        SmbFileOutputStream out = mock(SmbFileOutputStream.class);
        byte[] payload = new byte[] { 9, 8, 7 };

        doThrow(new SmbException("fail")).when(out).write(any(byte[].class), anyInt(), anyInt());

        w.start();

        // Wait until writer thread is ready
        synchronized (w) {
            long deadline = System.currentTimeMillis() + 2000;

    }

    public void test_transform_null() {
        try {
            htmlTransformer.transform(null);
            fail();
        } catch (final CrawlerSystemException e) {}
    }

    public void test_parseCharset() {
        String content;

        content = "...;charset=UTF-8\"...";