Many Unix assuptions have been made when testing.
Previously running tests on windows threw a panic
part way through the tests. After these changes
many more tests pass when the fix was isolated
to the test itself, and none panic.
Some tests are skipped because they do make sense
on windows (chmod, chown), while others are skipped
just to how the test was implemented.
Lastly, some of the external executables were hard coded.
Change these to look paths in TestMain first. This is done
to better support windows, where openssh may be installed and
sftp and sftp-server may both be in the PATH.
Fixes#69
io.Pipe is unbuffered and provides a poor replacement for a net.Conn, use an os.Pipe instead.
Also skip some tests which don't work under the Go server as it runs in process.
Nicola Murino
Daniel Theophanes
Dave Cheney
Mark Sheahan