Well, currently Net::SFTP::Foreign doesn't really work on Windows. I have tried to do so, but the lack of local sockets supporting nonblocking IO has been an insuperable problem (well, that, and my own lack of knowledge on this platform :-(.

The test reports say it works because Net::SFTP::Foreign requires a local SFTP server binary to run most of its test suite and as it can not usually find that in Windows, most of the test suite is just skiped.