Golang afero: Difference between revisions
From wikinotes
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// creates on disk, or in memory (depending on appfs val) | // creates on disk, or in memory (depending on appfs val) | ||
appfs.Create("/var/tmp/foo.txt | appfs.Create("/var/tmp/foo.txt") | ||
// utils exposed in different imports | // utils exposed in different imports | ||
import "afero/ioutil" | import "afero/ioutil" | ||
ioutil.ReadFile(appfs, "/var/tmp/foo.txt") | ioutil.ReadFile(appfs, "/var/tmp/foo.txt") | ||
</syntaxhighlight> | </syntaxhighlight> |
Revision as of 17:56, 22 July 2022
Afero defines and implements an interface to access the filesystem.
You can then pass in an abstraction of real os calls, or a stub stub interface you can make assertions against.
Documentation
github https://github.com/spf13/afero
Usage
Basics
import "github.com/spf13/afero" appfs := afero.NewOsFs() // real 'os' calls appfs := afero.NewMemMapFs() // memory backed fake filesystem // there are several additional options, like sftp, CopyOnWriteFs, ... // creates on disk, or in memory (depending on appfs val) appfs.Create("/var/tmp/foo.txt") // utils exposed in different imports import "afero/ioutil" ioutil.ReadFile(appfs, "/var/tmp/foo.txt")There are no assertions, when testing use the API to check the presence/contents of the file.
There are however some additional utils that are helpful, both in testing and production code (ex.appfs.DirExists()
).