assertEquals(Country.CANADA, bimap2.get(Currency.DOLLAR));
    assertEquals(bimap1, bimap2);
    bimap2.inverse().put(Country.SWITZERLAND, Currency.FRANC);
    assertEquals(Country.SWITZERLAND, bimap2.get(Currency.FRANC));
    assertThat(bimap1.get(Currency.FRANC)).isNull();
    assertFalse(bimap2.equals(bimap1));

    /* Test that it can be empty. */

            a.setSubject(new Subject());
            return a;
        }
        case WITH_CONFIG: {
            // Use the constructor that sets a StaticJAASConfiguration to exercise that branch
            return new JAASAuthenticator(new HashMap<String, String>(), "DOM", "user", "pass");
        }
        case DEFAULT_NO_PS:
        default:
            return new JAASAuthenticator();
        }
    }

        // Act + Assert
        assertThrows(NullPointerException.class, () -> SmbCopyUtil.openCopyTargetFile(dest, SmbConstants.ATTR_NORMAL, false));
    }

    // --- Tests for copyFile exception handling branch ---

    @Nested
    class CopyFileExceptions {

        private SmbTreeHandleImpl newTreeHandle(boolean isSmb2) throws Exception {
            SmbTreeHandleImpl th = mock(SmbTreeHandleImpl.class);

constraints.Mod11Check.message = A soma de verificação Módulo 11 de {value} está incorreta.
constraints.ModCheck.message = A soma de verificação {modType} de {value} está incorreta.
constraints.NotBlank.message = {item} não pode estar em branco.
constraints.NotEmpty.message = {item} não pode estar vazio.
constraints.ParametersScriptAssert.message = A expressão de script "{script}" não é verdadeira.
constraints.Range.message = {item} deve estar entre {min} e {max}.

        when(pipe.ensureTreeConnected()).thenReturn(tree);
        when(tree.acquire()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);

        // SMB2 branch in ensureOpen uses openUnshared(String, ...)
        when(pipe.openUnshared(anyString(), anyInt(), anyInt(), anyInt(), anyInt(), anyInt())).thenReturn(fileHandle);
        when(fileHandle.acquire()).thenReturn(fileHandle);

```

## Contributing

1. Fork the repository
2. Create a feature branch: `git checkout -b feature/amazing-feature`
3. Follow coding standards: `mvn formatter:format`
4. Add tests for new functionality
5. Ensure all tests pass: `mvn test`
6. Check license headers: `mvn license:format`
7. Commit changes: `git commit -m 'Add amazing feature'`
8. Push to branch: `git push origin feature/amazing-feature`
9. Open a Pull Request

### Development Workflow
1. **Fork** the repository on GitHub
2. **Create** your feature branch: `git checkout -b feature/amazing-feature`
3. **Follow** the coding standards: `mvn formatter:format`
4. **Add** comprehensive tests for new functionality
5. **Commit** your changes: `git commit -m 'Add amazing feature'`
6. **Push** to the branch: `git push origin feature/amazing-feature`
7. **Submit** a Pull Request with detailed description

## Contributing

We welcome contributions to Fess Crawler! Please follow these guidelines:

1. **Fork** the repository
2. **Create** a feature branch (`git checkout -b feature/amazing-feature`)
3. **Commit** your changes (`git commit -m 'Add amazing feature'`)
4. **Push** to the branch (`git push origin feature/amazing-feature`)
5. **Open** a Pull Request

### Development Setup

```bash
# Clone the repository

    @Test
    @DisplayName("finalize() logs a warning when not closed (no exception)")
    void finalize_logsWhenNotClosed() throws Throwable {
        when(cfg.isTraceResourceUsage()).thenReturn(true); // exercise backtrace branch
        stubValidTree(2L, true, true);
        SmbFileHandleImpl h = new SmbFileHandleImpl(cfg, 1, tree, "//host/share", 0, 0, 0, 0, 0L);
        // Calling finalize directly to execute the logic; should not throw

    @DisplayName("getServerTimeZoneOffset: SMB1 negotiate path multiplies minutes to millis")
    void getServerTimeZoneOffsetSmb1() throws Exception {
        // Uses concrete SMB1 negotiate response to exercise SMB1-specific branch
        // Build a concrete SMB1 negotiate response to expose ServerData fields
        jcifs.CIFSContext ctx = mock(jcifs.CIFSContext.class);
        when(ctx.getConfig()).thenReturn(config);