assertEquals("1", "1bc45", StringUtil.replace("12345", "23", "bc"));
        assertEquals("2", "1234ef", StringUtil.replace("12345", "5", "ef"));
        assertEquals("3", "ab2345", StringUtil.replace("12345", "1", "ab"));
        assertEquals("4", "a234a", StringUtil.replace("12341", "1", "a"));
        assertEquals("5", "ab234abab234ab", StringUtil.replace("1234112341", "1", "ab"));

            testMessage.setMid(12345L);
            assertEquals(12345, testMessage.hashCode());
        }

        @Test
        @DisplayName("Should be equal when MIDs match")
        void testEquals() {
            TestServerMessageBlock2 other = new TestServerMessageBlock2(mockConfig);
            testMessage.setMid(12345L);
            other.setMid(12345L);

        assertTrue(str1.endsWith("]"));

        // Test with specific value
        FileEndOfFileInformation info = new FileEndOfFileInformation(12345L);
        String str2 = info.toString();
        assertEquals("EndOfFileInformation[endOfFile=12345]", str2);
    }

    @Test
    @DisplayName("Test toString with various values")
    void testToStringWithVariousValues() {
        // Test negative value

    class ConstructorTests {

        private Configuration mockConfig;

        @BeforeEach
        void setUp() {
            mockConfig = mock(Configuration.class);
            when(mockConfig.getPid()).thenReturn(12345);
        }

        @Test
        @DisplayName("Should initialize with correct command and MID")
        void testConstructorInitialization() throws Exception {
            // Given
            int testMid = 42;

        MockitoAnnotations.openMocks(this);
    }

    @Test
    @DisplayName("Test constructor with non-zero asyncId sets async flag")
    void testConstructorWithNonZeroAsyncId() {
        // Given
        long mid = 12345L;
        long asyncId = 67890L;

        // When
        Smb2CancelRequest request = new Smb2CancelRequest(mockConfig, mid, asyncId);

        // Then
        assertEquals(SMB2_CANCEL, request.getCommand());

        }

        @Test
        @DisplayName("isResponseAsync should return true when asyncId is not 0")
        void testIsResponseAsyncTrue() {
            testRequest.setAsyncId(12345L);
            assertTrue(testRequest.isResponseAsync());
        }

        @ParameterizedTest
        @ValueSource(longs = { 1L, 100L, Long.MAX_VALUE })

        Kerb5Authenticator auth = new Kerb5Authenticator((Subject) null);

        // Build a token with an arbitrary non-kerberos mechanism OID
        ASN1ObjectIdentifier unsupported = new ASN1ObjectIdentifier("1.2.3.4.5");
        byte[] init = spnegoInitWithMechs(unsupported);

        // Host is a FQDN to pass the short-name check
        SmbUnsupportedOperationException ex =

    }

    @Test
    void throwsWhenOutputExceedsProvidedBuffer() throws Exception {
        byte[] header = buildHeader(NtStatus.NT_STATUS_SUCCESS);
        byte[] output = new byte[] { 1, 2, 3, 4, 5, 6 };
        byte[] body = buildIoctlResponseBody(Smb2IoctlRequest.FSCTL_SRV_COPYCHUNK_WRITE, new byte[16], 0, null, output.length, output, 0);
        byte[] packet = new byte[header.length + body.length];

        public int getWordCount() {
            return wordCount;
        }
    }

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        when(mockConfig.getPid()).thenReturn(12345);
    }

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Test constructor with config only")

        setTreeIdMethod.setAccessible(true);
        setTreeIdMethod.invoke(response, 12345);

        // When
        int tid = response.getTid();

        // Then
        assertEquals(12345, tid);
    }

    @Test
    @DisplayName("Should validate TID correctly")
    void testIsValidTid() throws Exception {
        // Test invalid TID (-1)