test: test-path fails on Windows?

https://github.com/nodejs/node/blob/master/test/parallel/test-path.js#L564 has

``` javascript
assert.equal(path.win32._makeLong('C:').toLowerCase(),
                '\\\\?\\' + process.cwd().toLowerCase());
```

The former resolves to absolute path at `C:`: '\\?\c:\'.
The later resolves CWD, could be on another drive 'd:\dir'.

Seems only passes if CWD is at `C:\`?
