}

    @Test
    @DisplayName("writeBytesWireFormat with null path returns minimal bytes")
    void testWriteWhenPathIsNull() {
        // When path is null, Strings.getOEMBytes returns empty array, not NPE
        when(mockConfig.getOemEncoding()).thenReturn("windows-1252");
        SmbComQueryInformation nullPathCmd = new SmbComQueryInformation(mockConfig, null);
        byte[] buffer = new byte[50];

        URLConnection conn = handler.openConnection(url);

        // Assert
        assertNotNull(conn);
        assertTrue(conn instanceof SmbFile);
    }

    @Test
    @DisplayName("openConnection throws NPE for null URL")
    void testOpenConnectionWithNullUrl() {
        // Act & Assert
        assertThrows(NullPointerException.class, () -> handler.openConnection(null));
    }

    @Test

    }

    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);

     * 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()),

    }

    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);

        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

        // 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);
    }

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

            assertTrue(ex.getMessage().contains("domain sid"));
        }

        @Test
        @DisplayName("Static toByteArray null input throws NPE")
        void testStaticToByteArrayNull() {
            assertThrows(NullPointerException.class, () -> SID.toByteArray(null));
        }
    }

    @Nested
    @DisplayName("Tests requiring mocks")

        // Mock configuration methods
        when(mockConfig.getPid()).thenReturn(1234);
        when(mockCifsContext.getConfig()).thenReturn(mockConfig);

        // Mock credentials to prevent NPE
        when(mockCredentials.getUserDomain()).thenReturn("DOMAIN");
        when(mockCifsContext.getCredentials()).thenReturn(mockCredentials);

        // Create URL handler