need rigorous filesystem test suite

[max-mapper]

we need a script that, given a folder, will do the following:

• any stuff from https://nodejs.org/api/fs.html that isn't here and would be useful to test
• write a file
• read a file
• truncate a file
• append to a file
• delete a file
• soft link a file
• hard link a file
• read a soft link
• read a hard link
• rewrite a hard link
• rename a file
• stat
• writing big (~512KB) buffers in a single write call
• reading big buffers in a single read call
• writing small buffers (~10 bytes)
• reading small buffers (~10 bytes)
• readdir
• rmdir
• mkdir

that way we can use this for testing all the various fuse implementations for edge cases

[Munter]

I don't know if this is relevant specifically for this issue, but I got fuse tests up and running on a Travis setup: https://github.com/Munter/fusile/blob/master/.travis.yml

[piranna]

I think this could/should be an independent module, so others could use it to test their own filesystems (also not based on Node.js).

[max-mapper]

@piranna agree about a standalone library. @mafintosh said it would be easier to do the more tricky tests from node, e.g. inserting a byte range into an existing file, but I agree it should be as general as possible and should be a CLI tool that can test any fs volume

[piranna]

:+1: