}

    public void test_getMessage_withComplexCause() {
        // Test getMessage behavior with complex cause structure
        final Exception innerCause = new NullPointerException("NPE occurred");
        final Exception outerCause = new IllegalStateException("State error", innerCause);
        final JobProcessingException exception = new JobProcessingException(outerCause);

    }

    public void test_stackTrace() {
        // Test that stack trace is properly preserved
        String message = "GSA error with stack trace";
        Throwable cause = new NullPointerException("NPE occurred");
        GsaConfigException exception = new GsaConfigException(message, cause);

        assertNotNull(exception.getStackTrace());
        assertTrue(exception.getStackTrace().length > 0);

     * package-private, I feel OK with just not testing them for NPE.
     *
     * Note that testing casValue is particularly dangerous because it uses Unsafe under some
     * versions of Java, and apparently Unsafe can cause SIGSEGV instead of NPE—almost as if it's
     * not safe.
     */
    concat(
            stream(AbstractFuture.class.getDeclaredMethods()),

        // Test with different types of causes
        DataStoreException withIOException = new DataStoreException("IO Error", new java.io.IOException("File not found"));
        DataStoreException withNPE = new DataStoreException("NPE Error", new NullPointerException("Null value"));
        DataStoreException withCustom = new DataStoreException("Custom Error", new FessSystemException("System error"));

class SmbComSeekResponseTest {

    @Mock
    private Configuration mockConfig;

    private SmbComSeekResponse response;

    @BeforeEach
    void setUp() {
        // Setup mock configuration to avoid NPE
        when(mockConfig.getPid()).thenReturn(12345);
        response = new SmbComSeekResponse(mockConfig);
    }

    /* ------------------------------------------------------------------ */

        verify(dest, times(1)).getAttributes();
        verify(dest, never()).setPathInformation(anyInt(), anyLong(), anyLong(), anyLong());
    }

    @Test
    @DisplayName("openCopyTargetFile throws NPE on null dest (invalid input)")
    void openCopyTargetFile_nullDest_throwsNPE() {
        // Arrange
        SmbFile dest = null;

        // Act + Assert

        assertEquals("", blob.toString(), "toString() should be empty for empty buffer");
    }

    // Ensures set(null) resets the buffer to empty and does not NPE
    @Test
    @DisplayName("set(null) resets to empty")
    void set_null_resetsToEmpty() {
        // Arrange
        SecurityBlob blob = new SecurityBlob(new byte[] { 1, 2, 3 });

        // Act

        testEnv.put("test.key", "test.value");
        ldapUser = new LdapUser(testEnv, "testuser");

        ComponentUtil.register(new SystemHelper(), "systemHelper");

        // Register a mock LdapManager to avoid NPE
        ComponentUtil.register(new LdapManager() {
            // Override methods that are called in tests
        }, "ldapManager");
    }

    @Override
    public void tearDown() throws Exception {

        assertEquals(16, hash1.length, "NT hash should be 16 bytes");
        assertEquals(16, hash2.length, "NT hash should be 16 bytes");
    }

    @Test
    @DisplayName("getNTHash: null password throws NPE with message")
    void testGetNTHash_null() {
        NullPointerException ex = assertThrows(NullPointerException.class, () -> NtlmUtil.getNTHash((String) null));

        assertEquals("Not supported", ex.getMessage());
    }

    @Test
    @DisplayName("Null delegate causes NPE")
    void nullDelegate() {
        assertThrows(NullPointerException.class, () -> {
            new FileEntryAdapterIterator(parent, null, null) {
                @Override