MockFile.Create(string path, int bufferSize) not implemented

[rkoeninger]

The overload of MockFile.Create that takes a buffer size remains unimplemented as seen here.

The basic overload MockFile.Create(string) that just takes a path is implemented (source), but the overloads with options like buffer, access control and file security are not.

[fgreinacher]

The overload that adds the buffer size should be a no-brainer.

For access control and file options I think we need to discuss more. Could you create separate issues for these?

[rkoeninger]

Split this story out into 2 others. I made them as one because I was imagining an implementation like this:

        public override Stream Create(string path)
        {
            return Create(path, 4096);
        }

        public override Stream Create(string path, int bufferSize)
        {
            return Create(path, bufferSize, FileOptions.None);
        }

        public override Stream Create(string path, int bufferSize, FileOptions options)
        {
            return CreateInternal(path, bufferSize, options, new FileSecurity());
        }

#if NET40
        public override Stream Create(string path, int bufferSize, FileOptions options, FileSecurity fileSecurity)
        {
            return CreateInternal(path, bufferSize, options, fileSecurity);
        }
#endif

        // Create(string, int, FileOptions, FileSecurity) is not available in some build targets, so separate internal method
        private Stream CreateInternal(string path, int bufferSize, FileOptions options, FileSecurity fileSecurity)
        {
            if (path == null)
            {
                throw new ArgumentNullException(nameof(path), "Path cannot be null.");
            }
            mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");

            var directoryPath = mockPath.GetDirectoryName(path);
            if (!mockFileDataAccessor.Directory.Exists(directoryPath))
            {
                throw new DirectoryNotFoundException(string.Format(CultureInfo.InvariantCulture, StringResources.Manager.GetString("COULD_NOT_FIND_PART_OF_PATH_EXCEPTION"), path));
            }

            mockFileDataAccessor.AddFile(path, new MockFileData(new byte[0])
            {
                AccessControl = fileSecurity
            });
            var stream = OpenWrite(path);
            return stream;
        }

bufferSize doesn't do anything since we're reading from memory, fileSecurity just gets assigned to MockFileData, FileOptions not implemented in this example.