Re: [Pharo-dev] failing test in writing files

[Ben Coman]

Sven Van Caekenberghe wrote:
self assert: (file species isKindOf: FileStream)
But that is a weird test. What is the point ?

You have to test behaviour, like write a file and see if it was written. 
Testing types is very seldom done, because this is an implementation detail.


Thanks Sheri and Sven. I learnt a new aspect of design philosophy today. 
 Thats one thing I like about contributing to open source - the 
opportunity for learning, especially from the questions that other 
people ask.
cheers -ben

On 04 Dec 2014, at 01:32, sheri...@sheridan-mahoney.com wrote:

Hi there,

I have a failing test and was wondering if anyone would have a sense as to why:

| testString filename file |
    testString  := 'ascii String'.
    filename := 'test-file-' , 99 atRandom printString , '.txt'.
     filename asFileReference ensureDelete. 
    file := filename asFileReference 
        writeStreamDo: [ :stream | 
            stream
                nextPutAll: testString;
                crlf ]. 
    self assert: file species  = FileStream.

 
Many thanks,

Sheri
   

 
 





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