public void ModifiesTheActualFileSize(FileOptions options)
{
using (SafeFileHandle handle = File.OpenHandle(GetTestFilePath(), FileMode.CreateNew, FileAccess.Write, options: options))
{
RandomAccess.SetLength(handle, FileSize);
Assert.Equal(FileSize, RandomAccess.GetLength(handle));
}
}
public void ZeroesTheFileContentsWhenExtendingTheFile(FileOptions options)
{
using (SafeFileHandle handle = File.OpenHandle(GetTestFilePath(), FileMode.CreateNew, FileAccess.Write, options: options))
{
RandomAccess.SetLength(handle, FileSize);
byte[] buffer = new byte[FileSize + 1];
Assert.Equal(FileSize, RandomAccess.Read(handle, buffer, 0));
Assert.All(buffer, @byte => Assert.Equal(0, @byte));
}
}
public void AllowsForShrinking(FileOptions options)
{
using (SafeFileHandle handle = File.OpenHandle(GetTestFilePath(), FileMode.CreateNew, FileAccess.Write, options: options))
{
RandomAccess.SetLength(handle, FileSize);
Assert.Equal(FileSize, RandomAccess.GetLength(handle));
RandomAccess.SetLength(handle, FileSize / 2);
Assert.Equal(FileSize / 2, RandomAccess.GetLength(handle));
RandomAccess.SetLength(handle, 0);
Assert.Equal(0, RandomAccess.GetLength(handle));
}
}
protected override long MethodUnderTest(SafeFileHandle handle, byte[] bytes, long fileOffset)
{
RandomAccess.SetLength(handle, fileOffset);
return(0);
}