generate: Add --with-test option to create test scaffolding

[watilde]

Add --with-test option to generate its test code scaffolding when run oil generate something.
See also: #242.

[emlynwest]

Just curious, why would you test a view? https://github.com/fuel/oil/pull/243/files#diff-f010a25c6b4710011f6a51b4bd650285R850

[watilde]

@stevewest It's useful to make sure that the input data is identical when you do refactoring, and also there is a .gitkeep in test/view: https://github.com/fuel/fuel/tree/1.8/develop/fuel/app/tests/view

[emlynwest]

Ok then. Thanks.

[kenjis]

Oh, test/view in fuel/fuel was for view model, so it must be renamed to test/presenter.

[watilde]

@stevewest Thanks!

@kenjis Thanks for you comment! Any docs of the object that test/view was only for view model? Surely, I was thinking the test for actually using something method like render or get of the View Class.

[kenjis]

@watilde Probably there is no docs. But I was created folders in https://github.com/fuel/fuel/tree/1.8/develop/fuel/app/tests as exactly the same names in https://github.com/fuel/fuel/tree/1.8/develop/fuel/app/classes

app/classes/controller -> tesst/controller
app/classes/model      -> tests/model
app/classes/view       -> tests/view

As you know, view was renamed to presenter.

I thought we must write tests for classes, so I created three folders. And I have not written tests for view class. But if you write tests for view class, we have no reason to stop it. Now we have presenter, so it may be okay tests/view is for view class.

tesst/controller
tests/model
tests/presenter
tests/view

I don't have strong opinion to this.

[watilde]

@kenjis Ok I'll update this patch, I agree with you for now. Thanks 😺