Provide an in-memory or local-disk emulator of the storage APIs for testing

Easy to describe, hard to do :) Presently the only way I can verify my gcloud-java code is to run it against a real GCS bucket, which costs money and requires being authenticated.

@dimo414

@dimo414 I completely agree!

It is fairly simple to write something to support basic functionality (get/set/listing without options) but not so if we care about being a 100% (or close to it) compatible.

It is on our road-map and in fact as part of the efforts to add nio.Files facade to GCS in gcloud-java-contrib (currently at the gcs-nio branch) we also plan to provide a basic local gcs implementation. Any contribution to make it better (and closer to the real service) are welcome!

A different and complete local implementation that will be included in the cloud SDK will come at some point (but probably not any time soon).

/cc @mziccard @jart @jean-philippe-martin

@aozarov

Thanks @aozarov, an nio.Files facade will be excellent.

I believe this issue is related to #1993, which was just closed. We now expose a "LocalStorageHelper" that offers an in-memory emulator of (the core parts of) the storage API.