"String should start with the class name.");
        org.junit.jupiter.api.Assertions.assertTrue(actualString.contains("command=SMB_COM_CREATE_DIRECTORY"),
                "String should contain the command name.");
        org.junit.jupiter.api.Assertions.assertTrue(actualString.contains("directoryName=myDir"),
                "String should contain the directory name.");

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        response = new Smb2FlushResponse(mockConfig);
    }

    @Test
    @DisplayName("Constructor should initialize with Configuration")
    void testConstructor() {
        // Given & When
        Smb2FlushResponse flushResponse = new Smb2FlushResponse(mockConfig);

        // Then
        assertNotNull(flushResponse);

        String s = close.toString();
        assertTrue(s.startsWith("SmbComClose["), "string should start with class name");
        assertTrue(s.contains("fid=" + fid), "string should contain the fid value");
        assertTrue(s.contains("lastWriteTime=" + lwt), "string should contain the lwt value");
    }

        assertEquals(24, bytesDecoded, "Should decode exactly 24 bytes");
        assertEquals(0, response.getCapabilities(), "Capabilities should be zero");
        assertArrayEquals(new byte[16], response.getServerGuid(), "Server GUID should be all zeros");
        assertEquals(0, response.getSecurityMode(), "Security mode should be zero");
        assertEquals(0, response.getDialect(), "Dialect should be zero");
    }

    @Test

    assertFalse(
        "removeAll(emptyCollection) should return false",
        collection.removeAll(MinimalCollection.of()));
    expectUnchanged();
  }

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testRemoveAll_nonePresent() {
    assertFalse(
        "removeAll(disjointCollection) should return false",
        collection.removeAll(MinimalCollection.of(e3())));
    expectUnchanged();

        byte[] data = "Hello, World!".getBytes();
        ContentCache cache = new ContentCache(data);

        // Memory-based cache close should not throw exception
        cache.close();

        // Should still be able to get input stream after close for memory cache
        try (InputStream stream = cache.getInputStream()) {
            assertNotNull(stream);
        }
    }

    @Test
    @DisplayName("DOS_ERROR_CODES is non‑null and non‑empty")
    void testCodesArrayExistence() {
        assertNotNull(DosError.DOS_ERROR_CODES, "DOS_ERROR_CODES should be non‑null");
        assertTrue(DosError.DOS_ERROR_CODES.length > 0, "DOS_ERROR_CODES should contain at least one mapping");
    }

    @Test
    @DisplayName("Each error code mapping contains exactly two ints")
    void testEachPairLength() {

        // Same inputs and output should have same hash code
        assertEquals(item1.hashCode(), item2.hashCode());

        // Different inputs should have different hash code
        assertNotSame(item1.hashCode(), item3.hashCode());

        // Same inputs but different output should have different hash code
        assertNotSame(item1.hashCode(), item4.hashCode());
    }

    }

    @Test
    @DisplayName("DCE/RPC flags should be set correctly")
    void testDcerpcFlags() {
        // Test individual flag checking
        assertTrue(dfsRootEnum.isFlagSet(DcerpcConstants.DCERPC_FIRST_FRAG));
        assertTrue(dfsRootEnum.isFlagSet(DcerpcConstants.DCERPC_LAST_FRAG));

        // Combined flags should equal FIRST_FRAG | LAST_FRAG

    }

    /**
     * Test the writeParameterWordsWireFormat method.
     * This method should do nothing and return 0.
     */
    @Test
    void testWriteParameterWordsWireFormat() {
        byte[] dst = new byte[10];
        int dstIndex = 0;
        // The method should return 0 as it writes no parameter words