Re: [testdrivendevelopment] "bottom-up" TDD and common behaviors

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So this is definitely required behavior and it will be your own, so it
needs to be tested.
On the other hand, it's a very specific implementation detail which could
change when the technology changes and we don't want that to impact actual
behavior related tests about animals.

What I would do is make a transformation decorator and then test sample
data to see that it gets transformed correctly.  If Ecto ever changes, that
transformation decorator can do nothing if needed.
You basically need a map of fields that can be changed and the
transformation needed for that field.

A bit more work, but it allows for a change in Ecto or a change in
understanding of Ecto to not impact the main test suite.

On Wed, Dec 4, 2019, 01:50 Brian Marick <[email protected]> wrote:

> Yes.
>
> On Dec 3, 2019, at 5:31 AM, Avi Kessner <[email protected]> wrote:
>
> If I understand correctly, the code here is specifically for doing an Ecto
> transformation, correct? If you decide not to use Ecto the need for this
> abstraction is removed?
>
>
> 
>

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<div dir=3D"auto">So this is definitely required behavior and it will be yo=
ur own, so it needs to be tested.<div dir=3D"auto">On the other hand, it&#3=
9;s a very specific implementation detail which could change when the techn=
ology changes and we don&#39;t want that to impact actual behavior related =
tests about animals.</div><div dir=3D"auto"><br></div><div dir=3D"auto">Wha=
t I would do is make a transformation decorator and then test sample data t=
o see that it gets transformed correctly.=C2=A0 If Ecto ever changes, that =
transformation decorator can do nothing if needed.</div><div dir=3D"auto">Y=
ou basically need a map of fields that can be changed and the transformatio=
n needed for that field.</div><div dir=3D"auto"><br></div><div dir=3D"auto"=
>A bit more work, but it allows for a change in Ecto or a change in underst=
anding of Ecto to not impact the main test suite.</div></div><br><div class=
=
=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed, Dec 4, 2019=
, 01:50 Brian Marick &lt;<a href=3D"mailto:[email protected]">marick@exam=
pler.com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=
=3D"word-wrap:break-word;line-break:after-white-space"><div style=3D"word-=
wrap:break-word;line-break:after-white-space">Yes.<br><div><br><blockquote =
type=3D"cite"><div>On Dec 3, 2019, at 5:31 AM, Avi Kessner &lt;<a href=3D"m=
ailto:[email protected]" target=3D"_blank" rel=3D"noreferrer">akessner@gma=
il.com</a>&gt; wrote:</div><br><div><span style=3D"font-family:Helvetica;fo=
nt-size:16px;font-style:normal;font-variant-caps:normal;font-weight:normal;=
letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;=
white-space:normal;word-spacing:0px;text-decoration:none;float:none;display=
:inline!important">If I understand correctly, the code here is specifically=
=
=C2=A0for doing an Ecto transformation, correct? If you decide not to use =
Ecto the need for this abstraction is removed?</span><br style=3D"font-fami=
ly:Helvetica;font-size:16px;font-style:normal;font-variant-caps:normal;font=
-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-=
transform:none;white-space:normal;word-spacing:0px;text-decoration:none"></=
div></blockquote></div><br></div></div>


</p></p></blockquote></div>

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