82 lines
2.3 KiB
Text
82 lines
2.3 KiB
Text
Design Process : Unit Tests Python
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==================================
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[grid="all"]
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`------------`-----------------------
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*State* _Dropped_
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*Date* _2007-06-17_
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*Proposed by* link:Ichthyostega[]
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-------------------------------------
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UnitTests in Python
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-------------------
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Use the Python scripting language for the actual Unit Tests and access the
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Cinelerra Code via SWIG
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Description
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~~~~~~~~~~~
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Define Test classes in Python, using e.g. the link:PyUnit[] framework of the
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Python Standard lib. The SWIG compiler can generate wrapper code automatically,
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so we can access the C++ Classes and Facilities of Cinelerra as Python Modules
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and Classes. The Classes to be tested in Cinelerra need to provide some
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Interface for carrying out these tests (and this is one of the main benefits of
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the whole Test driven aproach).
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Tasks
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~~~~~
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* Find out how the SWIG generated wrappers play together with Python's List
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and Map types. Without the ability to use the latter in the tests, this
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whole proposal is rather pointless.
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* Think on how we can test video data processing (at least in its basics, e.g.
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does additive overlay work)
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Pros
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~~~~
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Programming Unit and Self tests in a Scripting language facillates this task.
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The X-Language bindings are quite usable today. As a side effect, it helps to
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get a clean program structure, because the tests need some Interface and/or
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some object factories to create the test candidates. Python is proposed,
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because it is fairly mainstream, has a flat learning curve and but is
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moderately modern and functional-style at the same time.
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Cons
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~~~~
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* Adds to the complexity
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* Some old-style hackers have a quite distinct aversion against Python
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Alternatives
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~~~~~~~~~~~~
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Rationale
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~~~~~~~~~
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Why am I proposing this? Out of lazyness. Python is there, many devs (on linux)
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have some Python skills, SWIG is not overly complicated to use.
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And last but not least: just to get the discussion going... ;-)
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Comments
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--------
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* I'd rather consider to use some embedded language in cinelerra which we can
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use to drive tests, should be something smaller and more sane than python.
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Needs certainly more discussion. For simple unit tests some C/C++ harness and
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bit shell scripting would suffice, I really want to integrate this with
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link:NoBug[].
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-- link:ct[] [[DateTime(2007-06-17T17:32:27Z)]]
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''''
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Back to link:../DesignProcess[]
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