fix: added correct handling of file share in file stream constructor/factory

Author: HarrisonTCodes

src/TestableIO.System.IO.Abstractions.TestingHelpers/MockFile.cs

@@ -677,7 +677,7 @@ private FileSystemStream OpenInternal(
         }
         mockFileDataAccessor.AdjustTimes(mockFileData, timeAdjustments);
 
-        return new MockFileStream(mockFileDataAccessor, path, mode, access, options);
+        return new MockFileStream(mockFileDataAccessor, path, mode, access, FileShare.Read, options);
     }
 
     /// <inheritdoc />

src/TestableIO.System.IO.Abstractions.TestingHelpers/MockFileStreamFactory.cs

@@ -41,25 +41,25 @@ public FileSystemStream New(string path, FileMode mode, FileAccess access)
 
     /// <inheritdoc />
     public FileSystemStream New(string path, FileMode mode, FileAccess access, FileShare share)
-        => new MockFileStream(mockFileSystem, path, mode, access);
+        => new MockFileStream(mockFileSystem, path, mode, access, share);
 
     /// <inheritdoc />
     public FileSystemStream New(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize)
-        => new MockFileStream(mockFileSystem, path, mode, access);
+        => new MockFileStream(mockFileSystem, path, mode, access, share);
 
     /// <inheritdoc />
     public FileSystemStream New(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize, bool useAsync)
-        => new MockFileStream(mockFileSystem, path, mode, access);
+        => new MockFileStream(mockFileSystem, path, mode, access, share);
 
     /// <inheritdoc />
     public FileSystemStream New(string path, FileMode mode, FileAccess access, FileShare share, int bufferSize,
         FileOptions options)
-        => new MockFileStream(mockFileSystem, path, mode, access, options);
+        => new MockFileStream(mockFileSystem, path, mode, access, share, options);
 
 #if FEATURE_FILESTREAM_OPTIONS
     /// <inheritdoc />
     public FileSystemStream New(string path, FileStreamOptions options)
-        => new MockFileStream(mockFileSystem, path, options.Mode, options.Access, options.Options);
+        => new MockFileStream(mockFileSystem, path, options.Mode, options.Access, options: options.Options);
 #endif
 
     /// <inheritdoc />