* @throws CIFSUnsupportedCryptoException if Provider has already been initialized.
     */
    public static void initProvider(final Provider customProvider) throws CIFSUnsupportedCryptoException {
        if (provider != null) {
            throw new CIFSUnsupportedCryptoException(
                    "Provider can't be re-initialized. Provider has already been initialized with " + provider.getInfo());
        }

    void testInitAlreadyInitializedThrowsException() throws CIFSException {
        // Test attempting to initialize when already initialized
        SingletonContext.init(null);
        CIFSException e = assertThrows(CIFSException.class, () -> SingletonContext.init(null));
        assertEquals("Singleton context is already initialized", e.getMessage());
    }

    @Test

    this.journalFileBackup = directory / JOURNAL_FILE_BACKUP
  }

  @Synchronized
  @Throws(IOException::class)
  fun initialize() {
    assertLockHeld()

    if (initialized) {
      return // Already initialized.
    }

    // If a bkp file exists, use it instead.
    if (fileSystem.exists(journalFileBackup)) {
      // If journal file also exists just delete backup file.

/**
 * Tests for the MsrpcDfsRootEnum class.
 * This class uses JUnit 5 for testing.
 */
class MsrpcDfsRootEnumTest {

    /**
     * Test the constructor of MsrpcDfsRootEnum.
     * Verifies that the object is initialized with the correct default values.
     */
    @Test
    void testConstructor() {
        // Given
        String serverName = "test-server";

        // When

            assertEquals(0, ptypeField.get(msrpcSamrOpenAlias), "ptype should be initialized to 0");

            java.lang.reflect.Field flagsField = jcifs.dcerpc.DcerpcMessage.class.getDeclaredField("flags");
            flagsField.setAccessible(true);
            assertEquals(0x01 | 0x02, flagsField.get(msrpcSamrOpenAlias),
                    "flags should be initialized to DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG");

    }

    @Test
    @DisplayName("Should correctly initialize MsrpcGetMembersInAlias with provided parameters")
    void testConstructorInitialization() {
        // Given
        // Mocks are already initialized by @BeforeEach

        // When
        MsrpcGetMembersInAlias msrpcGetMembersInAlias = new MsrpcGetMembersInAlias(mockAliasHandle, mockSids);

        // Then

        mockHandle = mock(policy_handle.class);
    }

    /**
     * Test case for the {@link MsrpcLsarClose#MsrpcLsarClose(policy_handle)} constructor.
     * 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);

        throw IOException(
          "Platform applicationContext not initialized. " +
            "Possibly running Android unit test without Robolectric. " +
            "Android tests should run with Robolectric " +
            "and call OkHttp.initialize before test",
        )
      } else {
        throw IOException(
          "Platform applicationContext not initialized. " +
            "Startup Initializer possibly disabled, " +

        // When
        boolean result = request.isSigningEnforced();

        // Then
        assertFalse(result, "Custom implementation should return false when initialized with false");
    }

    @Test
    @DisplayName("Test custom implementation with signing enforced")
    void testCustomImplementationSigningEnforced() {
        // Given

    }

    /**
     * Returns the initialization time of this monotonic clock.
     * This is a convenience method equivalent to {@code get().start()}.
     *
     * @return the instant when this monotonic clock was initialized
     * @see #startInstant()
     */
    public static Instant start() {
        return get().startInstant();
    }

    /**
     * Returns the elapsed time since clock initialization.