TransWaitNamedPipe pipe = new TransWaitNamedPipe("\\\\pipe\\testPipe");
        byte[] buffer = new byte[10];

        // The implementation always returns 0
        int consumed = pipe.readSetupWireFormat(buffer, 0, 4);
        assertEquals(0, consumed, "readSetupWireFormat should always return 0");
    }

    @Test
    public void testWriteParametersWireFormat() {
        // Test that writeParametersWireFormat returns 0

     *
     * @return the share this referral points to
     */
    String getShare();

    /**
     * Get the number of characters from the UNC path that were consumed by this referral
     *
     * @return the number of characters from the unc path that were consumed by this referral
     */
    int getPathConsumed();

    /**
     * Get the replacement path for this referral
     *

     *
     * @param domain the domain name to append
     */
    void fixupDomain(String domain);

    /**
     * Reduces path consumed by the given value
     *
     * @param i the number of characters to strip from path consumed
     */
    void stripPathConsumed(int i);

    @Override
    DfsReferralDataInternal next();

    /**
     * Set the UNC path link for this referral
     *

        // Default constructor
    }

    private int pathConsumed;
    private int numReferrals;
    private int tflags;
    private Referral[] referrals;

    /**
     * Get the number of characters consumed from the path
     *
     * @return the pathConsumed
     */
    public final int getPathConsumed() {
        return this.pathConsumed;
    }

    /**
     * Get the number of referrals in the response

        String result = mockReferralData.getShare();

        // Then
        assertEquals(share, result);
        verify(mockReferralData).getShare();
    }

    @Test
    @DisplayName("Should get path consumed")
    void testGetPathConsumed() {
        // Given
        int pathConsumed = 10;
        when(mockReferralData.getPathConsumed()).thenReturn(pathConsumed);

        // When

        final int availableBefore = in.available();

        extractor.testValidateInputStream(in);

        final int availableAfter = in.available();
        assertEquals("Stream should not be consumed by validation", availableBefore, availableAfter);
    }

    /**
     * Test that validateInputStream is called exactly once per getText call.
     */

        final ExtractData result = filenameExtractor.getText(in, params);

        assertNotNull(result);
        assertEquals("filename.txt", result.getContent());
        // Verify stream was not consumed
        assertEquals(testData.length, in.available());
    }

    /**
     * Test extraction with empty string filename.
     */
    public void test_getText_withEmptyFilename() {

 * This class extends SmbException to provide DFS referral information when a DFS path is encountered.
 */
public class DfsReferral extends SmbException {

    /** Number of characters consumed from the path */
    public int pathConsumed;
    /** Time to live for this referral in seconds */
    public long ttl;
    /** Target server for this referral */
    public String server; // Server

/**
 * Job for purging expired thumbnail files from the system.
 * This job removes thumbnail files that have exceeded their configured expiration time
 * to prevent disk space from being consumed by old thumbnails.
 */
public class PurgeThumbnailJob {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(PurgeThumbnailJob.class);

    /**

- `validateInputStream()` method behavior
- Exception types and messages
- Stream consumption (should not consume)
- Consistency across multiple calls

**Test Count**: 11 tests

**Key Scenarios**:
- ✅ Validates non-null streams
- ✅ Throws CrawlerSystemException for null
- ✅ Called during getText execution
- ✅ Does not consume or modify stream
- ✅ Consistent behavior across multiple calls
- ✅ Works with various InputStream types