[vdsm] clean testable code

[Giuseppe Vallarelli]

Talking with my teammates I've noticed that there is some confusion related to 
what testing means and in general
how tests can improve the quality of the codebase by favouring the development 
of components that are of higher
quality - unluckily it doesn't favour hair regrowing. Tests are also cool 
because when done right they represent
an executable form of documentation.

Some intro material:

1 How to Write Clean, Testable Code by Miško Hevery (A Googler)
  http://www.youtube.com/watch?v=XcT4yYu_TTs

2 How to write testable code by Miško Hevery (hands on ;-))
  http://misko.hevery.com/attachments/Guide-Writing%20Testable%20Code.pdf
  Examples are provided in Java but the same principles apply to Python
  as well.

3 TDD by James Shore (a practice created by Kent Beck)
  http://www.jamesshore.com/Agile-Book/test_driven_development.html
  A broad article explaining TDD and related concepts.

4 Difference between state based testing and interaction based testing
  http://martinfowler.com/articles/mocksArentStubs.html

Not so intro - but easier to understand after consuming previous material:

5 Mock Roles, not Objects by Freeman and Pryce
  http://jmock.org/oopsla2004.pdf
  They both wrote a very interesting book: Growing Object Oriented Software: 
Guided by Tests
  
http://www.amazon.com/Growing-Object-Oriented-Software-Guided-Tests/dp/0321503627/ref=cm_cr_pr_product_top
  I didn't read it yet.

Points from 3 to 5 mostly describe a different kind of working practice, which 
is very
opinionated but nevertheless with some interesting ideas. I consider points 1-2 
fundamentals.

Enjoy, Giuseppe

I will share new materials if there's some interest on it.
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Re: [vdsm] clean testable code

[Yaniv Bronheim]

Thanks Guiseppe! Great links  
We're surely can and should improve our VDSM unit tests, and use more of our 
functional tests
I'll check the links more deeply, and be glad to get more useful and good 
material\lectures for better programming that you encountered with

Yaniv Bronhaim.

- Original Message -
 From: Giuseppe Vallarelli gvall...@redhat.com
 To: engine-devel engine-de...@ovirt.org, VDSM Project Development 
 vdsm-devel@lists.fedorahosted.org
 Sent: Sunday, August 11, 2013 3:57:08 PM
 Subject: [vdsm] clean testable code
 
 Talking with my teammates I've noticed that there is some confusion related
 to what testing means and in general
 how tests can improve the quality of the codebase by favouring the
 development of components that are of higher
 quality - unluckily it doesn't favour hair regrowing. Tests are also cool
 because when done right they represent
 an executable form of documentation.
 
 Some intro material:
 
 1 How to Write Clean, Testable Code by Miško Hevery (A Googler)
   http://www.youtube.com/watch?v=XcT4yYu_TTs
 
 2 How to write testable code by Miško Hevery (hands on ;-))
   http://misko.hevery.com/attachments/Guide-Writing%20Testable%20Code.pdf
   Examples are provided in Java but the same principles apply to Python
   as well.
 
 3 TDD by James Shore (a practice created by Kent Beck)
   http://www.jamesshore.com/Agile-Book/test_driven_development.html
   A broad article explaining TDD and related concepts.
 
 4 Difference between state based testing and interaction based testing
   http://martinfowler.com/articles/mocksArentStubs.html
 
 Not so intro - but easier to understand after consuming previous material:
 
 5 Mock Roles, not Objects by Freeman and Pryce
   http://jmock.org/oopsla2004.pdf
   They both wrote a very interesting book: Growing Object Oriented Software:
   Guided by Tests
   
 http://www.amazon.com/Growing-Object-Oriented-Software-Guided-Tests/dp/0321503627/ref=cm_cr_pr_product_top
   I didn't read it yet.
 
 Points from 3 to 5 mostly describe a different kind of working practice,
 which is very
 opinionated but nevertheless with some interesting ideas. I consider points
 1-2 fundamentals.
 
 Enjoy, Giuseppe
 
 I will share new materials if there's some interest on it.
 ___
 vdsm-devel mailing list
 vdsm-devel@lists.fedorahosted.org
 https://lists.fedorahosted.org/mailman/listinfo/vdsm-devel
 
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