assertEquals("application/octet-stream", mimeMap.getMimeType("doesnotexist"));
        }

        @Test
        @DisplayName("Should handle case insensitive extensions")
        void testCaseInsensitiveExtensions() throws IOException {
            assertEquals("application/pdf", mimeMap.getMimeType("PDF"));

                }
                policyHandle = new LsaPolicyHandle(handle, "\\\\" + server, 0x00000800);
                SID.resolveSids(handle, policyHandle, sids);
            } finally {
                if (handle != null) {
                    if (policyHandle != null) {
                        policyHandle.close();
                    }
                    handle.close();
                }
            }
        }
    }

    }

    /**
     * Test isValid() when the handle is valid.
     */
    @Test
    void testIsValid_whenValid() {
        when(smbFileHandle.isValid()).thenReturn(true);
        assertTrue(smbFileHandle.isValid(), "isValid should return true when the handle is valid.");
        verify(smbFileHandle, times(1)).isValid();
    }

    /**
     * Test isValid() when the handle is invalid.
     */
    @Test

        // Then
        assertEquals(maxMid, request.getMid(), "Should handle maximum MID");
        assertEquals(maxAsyncId, request.getAsyncId(), "Should handle maximum AsyncId");
        assertEquals(maxCredits, request.getCredit(), "Should handle maximum credits");
        assertEquals(maxTreeId, request.getTreeId(), "Should handle maximum tree ID");
    }

    @Test

     * Verifies that the handle, ptype, and flags are correctly initialized.
     */
    @Test
    void testConstructor() {
        // Create an instance of MsrpcLsarClose with the mock handle
        MsrpcLsarClose lsarClose = new MsrpcLsarClose(mockHandle);

        // Verify that the handle passed to the constructor is correctly set in the superclass

        assertNotNull(messages[0]);
        assertTrue(messages[0].toLowerCase().contains("success") || messages[0].toLowerCase().contains("completed"));
    }

    @Test
    @DisplayName("Should handle access denied status")
    void testAccessDeniedStatus() {
        // Given
        int status = NtStatus.NT_STATUS_ACCESS_DENIED;

        // When/Then
        assertEquals((int) 0xC0000022L, status);

        @Test
        @DisplayName("Should handle zero values")
        void shouldHandleZeroValues() {
            // Given
            TestAllocInfo allocInfo = new TestAllocInfo(0L, 0L);

            // When & Then
            assertEquals(0L, allocInfo.getCapacity());
            assertEquals(0L, allocInfo.getFree());
        }

        @Test
        @DisplayName("Should handle maximum long values")

            NtStatus.NT_STATUS_INVALID_PARAMETER })
    @DisplayName("Should handle various status codes")
    void testVariousStatusCodes(int status) {
        response.setStatusForTest(status);
        assertEquals(status, response.getErrorCode());
    }

    @ParameterizedTest
    @ValueSource(ints = { 0, 1, 10, 100, 255 })
    @DisplayName("Should handle various credit values")
    void testVariousCreditValues(int credits) {

            try {
                digest.verify(data, 0, data.length, 0, response);
                // If no exception is thrown, verification should return false or handle gracefully
                assertTrue(true, "Verify operation after close should either throw exception or handle gracefully");
            } catch (RuntimeException e) {
                // Accept runtime exceptions that might be thrown due to closed state

  // Returns the device which created the handle.
  virtual const char* DeviceName(absl::Status* status) const = 0;
  // Returns the device where the tensor was placed.
  virtual const char* BackingDeviceName(absl::Status* status) const = 0;
  // Returns the device type which created the handle.
  virtual const char* DeviceType(absl::Status* status) const = 0;
  // Returns the device ID which created the handle.