Howdy,
In the future, please attach your test patch to a message in wine-devel asking someone to run the test in windows.
I just ran your tests. The new tests ran without problems on my Win2K and WinXP systems.
However I do have a few other comments. Your formatting is not consistent with the style of the files you edit. Spaces around parameters are used in dlls/ws2_32/socket.c such as:
WSASetLastError( NtStatusToWSAError( err ));
and dlls/ws2_32/tests/sock.c uses a spacing between the "if" and the conditional such as:
if (v6 != INVALID_SOCKET)
Also, do you need to be closing the socket "s" with a call to "closesocket"? Be sure to do this on both regular and error paths if it's needed. You can look at "test_ipv6only" for an example of using the infamous "goto out;" used throughout wine to handle cleanup when exiting a test early.
Peace, -Roy