Hi Lukas,
you can try something like this,
const writeImageStub = sinon.stub(fs,
'writeFileSync').callsFake((file, data, _cb)=>{
expect(typeof file).toBe('string');
// expect(getFileExtension(data)).to.equal('jpg')
// expect(new Buffer.alloc(data)).to.be.a('object')
fs.writeFile(file,data,_cb)
});
writeImageStub("abc.txt","Hello world",(err, data)=>{
console.log(err,data);
})
On Sat, Nov 2, 2019 at 3:37 AM Lukas Wilkeer <lukas...@gmail.com> wrote:
> I'm attempt to stub the fs.writeFileSync method, but it's causing a
> Reference Error.
>
> In that case, oeverloading the fs method causes troubes as sinon.restore()
> doesn't work.
>
> *My stub.*
>
> const writeImageStub = sinon.stub(fs, 'writeFileSync')
> .callsFake((file, data, (err) => {
> expect(file).to.be.a('string')
> expect(getFileExtension(data)).to.equal('jpg')
> expect(new Buffer.alloc(data)).to.be.a('object')
>
> return '/static/images/image.jpg'
> }))
>
> *Reference error*: file is not defined.
>
> How to do this, what causing this and exist other method?
>
>
> *PS:*
> Spying the method causes the write operation to be executed, on this case
> i have to delete the files written, but how to get the filename as the
> format is *filename.Date.now.extension*. Don't exist a way to store as a
> global variable to do this.
>
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Regards,
Amresh Yadav
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