// Simple implementation for testing
            return 0;
        }

        @Override
        protected int writeBytesWireFormat(byte[] dst, int dstIndex) {
            // Simple implementation for testing
            return 0;
        }
    }

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);

            // Mock implementation
            return 0;
        }

        @Override
        public int encode(byte[] dst, int dstIndex) {
            // Mock implementation
            return 0;
        }

        @Override
        public void setDigest(SMBSigningDigest digest) {
            this.digest = digest;
        }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.internal.smb2.ServerMessageBlock2#writeBytesWireFormat(byte[], int)
     */
    @Override
    protected int writeBytesWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    public String toString() {
        return ("Smb2NegotiateResponse[" + super.toString() + ",dialectRevision=" + this.dialectRevision + ",securityMode=0x"

        }

        public TestServerMessageBlock2(Configuration config, int command) {
            super(config, command);
        }

        @Override
        protected int writeBytesWireFormat(byte[] dst, int dstIndex) {
            return bytesWritten;
        }

        @Override
        protected int readBytesWireFormat(byte[] buffer, int bufferIndex) throws SMBProtocolDecodingException {
            if (throwOnRead) {

        dest = growBuffer(dest, destIndex, sizeNeeded);
      }
      s.getChars(lastEscape, slen, dest, destIndex);
      destIndex = sizeNeeded;
    }
    return new String(dest, 0, destIndex);
  }

  /**
   * Helper method to grow the character buffer as needed, this only happens once in a while so it's
   * ok if it's in a method call. If the index passed in is 0 then no copying will be done.
   */

    if (charsSkipped > 0) {
      int endIndex = destIndex + charsSkipped;
      if (dest.length < endIndex) {
        dest = growBuffer(dest, destIndex, endIndex);
      }
      s.getChars(unescapedChunkStart, end, dest, destIndex);
      destIndex = endIndex;
    }
    return new String(dest, 0, destIndex);
  }

  /**

        if (path.startsWith("/admin") || path.startsWith("/error") || path.startsWith("/login")) {
            return true;
        }
        final int dotIndex = path.lastIndexOf('.');
        if (dotIndex >= 0) {
            final String extension = path.substring(dotIndex);
            return STATIC_EXTENSIONS.contains(extension);
        }
        return false;
    }

    /**

   * @since 11.0
   */
  public static String getFileExtension(String fullName) {
    checkNotNull(fullName);
    String fileName = new File(fullName).getName();
    int dotIndex = fileName.lastIndexOf('.');
    return (dotIndex == -1) ? "" : fileName.substring(dotIndex + 1);
  }

  /**
   * Returns the file name without its <a
   * href="http://en.wikipedia.org/wiki/Filename_extension">file extension</a> or path. This is

        byte[] dest = new byte[5];

        // Expect IndexOutOfBoundsException from System.arraycopy
        assertThrows(IndexOutOfBoundsException.class, () -> {
            encodable.encode(dest, 3); // destIndex=3, len=3, dest.length=5. 3+3 > 5
        }, "Should throw IndexOutOfBoundsException if destination offset + length exceeds destination array bounds");
    }

    @Test
    void testEncodeNullSourceArray() {

    // null for empty paths and root-only paths
    if (name == null) {
      return "";
    }

    String fileName = name.toString();
    int dotIndex = fileName.lastIndexOf('.');
    return dotIndex == -1 ? "" : fileName.substring(dotIndex + 1);
  }

  /**
   * Returns the file name without its <a
   * href="http://en.wikipedia.org/wiki/Filename_extension">file extension</a> or path. This is