NewFakeFs returns a fake Filesystem that exists at fakeFsRoot as its base path, useful for unit tests.

DefaultFs implements Filesystem using same-named functions from "os" and "io/ioutil".

FakeFs is implemented in terms of afero.

File is an interface that we can use to mock various filesystem operations typically accessed through the File object from the "os" package.

Filesystem is an interface that we can use to mock various filesystem operations.