private Stream OpenInternal(
string path,
FileMode mode,
FileAccess access,
FileShare share,
FileOptions options)
{
mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
bool exists = mockFileDataAccessor.FileExists(path);
if (mode == FileMode.CreateNew && exists)
{
throw new IOException(string.Format(CultureInfo.InvariantCulture, "The file '{0}' already exists.", path));
}
if ((mode == FileMode.Open || mode == FileMode.Truncate) && !exists)
{
throw CommonExceptions.FileNotFound(path);
}
if (!exists || mode == FileMode.CreateNew)
{
return(Create(path));
}
if (mode == FileMode.Create || mode == FileMode.Truncate)
{
Delete(path);
return(Create(path));
}
var mockFileData = mockFileDataAccessor.GetFile(path);
mockFileData.CheckFileAccess(path, access);
var length = mockFileData.Contents.Length;
MockFileStream.StreamType streamType = MockFileStream.StreamType.WRITE;
if (access == FileAccess.Read)
{
streamType = MockFileStream.StreamType.READ;
}
else if (mode == FileMode.Append)
{
streamType = MockFileStream.StreamType.APPEND;
}
return(new MockFileStream(mockFileDataAccessor, path, streamType, options));
}
public void MockFileStream_Constructor_Insufficient_FileShare_Throws_Exception(FileShare allowedFileShare, MockFileStream.StreamType streamType)
{
var filePath = @"C:\locked.txt";
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ filePath, new MockFileData("cannot access")
{
AllowedFileShare = allowedFileShare
} }
});
Assert.Throws <IOException>(() => new MockFileStream(fileSystem, filePath, streamType));
}
