https://pkg.go.dev/testing/fstest ?
On Sunday, March 28, 2021 at 5:09:12 AM UTC+2 aind...@gmail.com wrote:
> For testing library functions that accept fs.FS, I've been creating mock
> FS implementations. However, I'm surprised by the amount of code I've had
> to write for something like an FS with a single file in it. See below:
>
> *type singleFileFS struct {*
> * f stringFile*
> *}*
>
> *func (r singleFileFS) Open(name string) (fs.File, error) { return
> nil, nil }*
> *func (r singleFileFS) Stat(name string) (fs.FileInfo, error) { return r,
> nil }*
> *func (r singleFileFS) Name() string { return "."
> }*
> *func (r singleFileFS) Size() int64 { return -1
> }*
> *func (r singleFileFS) Mode() (m fs.FileMode) { return }*
> *func (r singleFileFS) ModTime() (t time.Time) { return }*
> *func (r singleFileFS) IsDir() bool { return
> true }*
> *func (r singleFileFS) Sys() interface{} { return nil
> }*
> *func (r singleFileFS) ReadDir(string) ([]fs.DirEntry, error) { return
> []fs.DirEntry{r.f}, nil }*
> *func (r singleFileFS) ReadFile(name string) ([]byte, error) { return
> r.f.body, nil }*
>
> *type stringFile struct {*
> * name string*
> * body []byte*
> *}*
>
> *func (s stringFile) Stat() (fs.FileInfo, error) { return s, nil }*
> *func (s stringFile) Name() string { return s.name
> <http://s.name> }*
> *func (s stringFile) Size() int64 { return
> int64(len(s.body)) }*
> *func (s stringFile) Mode() (m fs.FileMode) { return }*
> *func (s stringFile) Type() (m fs.FileMode) { return }*
> *func (s stringFile) ModTime() (t time.Time) { return }*
> *func (s stringFile) IsDir() (false bool) { return }*
> *func (s stringFile) Sys() (i interface{}) { return }*
> *func (s stringFile) Read([]byte) (i int, e error) { return }*
> *func (s stringFile) Close() (err error) { return }*
> *func (s stringFile) Info() (fs.FileInfo, error) { return s, nil }*
>
> Does anyone have any tips for creating a smaller version of this kind of
> adapter? Or are there any FS adapter libraries that can help with this sort
> of thing?
>
> Thanks,
> Akhil
>
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