[go-nuts] Re: io/fs adapters?
Thank you! I completely missed the memo on fstest :)
On Sunday, March 28, 2021 at 6:31:24 AM UTC-4 manlio@gmail.com wrote:
> For a project I wrote a simplified MapFS, where only the file data needs
> to be specified, as a string:
> https://gist.github.com/perillo/45dfe7eb1c87e2d436574cab0d11221c
>
>
> Manlio
>
> Il giorno domenica 28 marzo 2021 alle 10:06:21 UTC+2 seank...@gmail.com
> ha scritto:
>
>> 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
>>> }*
>>> *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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[go-nuts] Re: io/fs adapters?
For a project I wrote a simplified MapFS, where only the file data needs to
be specified, as a string:
https://gist.github.com/perillo/45dfe7eb1c87e2d436574cab0d11221c
Manlio
Il giorno domenica 28 marzo 2021 alle 10:06:21 UTC+2 seank...@gmail.com ha
scritto:
> 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
>> }*
>> *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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[go-nuts] Re: io/fs adapters?
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
> }*
> *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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