On Sun, Dec 8, 2013 at 8:22 PM, Rafael Knuth <rafael.kn...@gmail.com> wrote: > Hey there, > > I struggle to understand what unit testing specifically means in > practice and how to actually write unit tests for my code (my gut is > telling me that it's a fairly important concept to understand). > > Over the last few days I learned how to write and work with classes, I > learned quite a lot about functions, nested loops and I currently walk > through every program in the Python.org wiki "Simple Programs" > https://wiki.python.org/moin/SimplePrograms ... and here's the unit > test program they provide: > > import unittest > def median(pool): > copy = sorted(pool) > size = len(copy) > if size % 2 == 1: > return copy[(size - 1) / 2] > else: > return (copy[size/2 - 1] + copy[size/2]) / 2 > class TestMedian(unittest.TestCase): > def testMedian(self): > self.failUnlessEqual(median([2, 9, 9, 7, 9, 2, 4, 5, 8]), 7) > if __name__ == '__main__': > unittest.main() > > Also, I went through the "Beginning Test-Driven Development in Python" > http://net.tutsplus.com/tutorials/python-tutorials/test-driven-development-in-python/ > but I have to admit I still don't fully understand how unit tests work > in practice and how to write my own unit tests. > > As it turned out over the last few weeks, the best modus operandi for > me as an absolute beginner is to grab a small program, take it apart > in the first place, understand how each component works through trial > & error, then put all those pieces together and then I kind of get the > big picture. Once I "get it" I practice as much as possible to > memorize what I just learned and *then* I start readying as many > blogs, tutorials etc. as possible to deepen my understanding (I > frankly find most tutorials & blogs too complex and confusing from a > beginner's viewpoint, and I learn faster by taking code apart and > learning through trial & error in the first place). So, what I am > specifically searching for is a very simple code sample which I can > take apart and iterate through each component, and I was wondering if > you are aware of resources that might be helpful? > > My understanding of unit testing is that I have to embed my code into > a test and then I have to define conditions under which my code is > supposed to fail and pass. Is that assumption correct? > > I am a bit lost & confused here .. any help & hing is highly appreciated!
Here is an article I came across today that you may find useful: http://www.jeffknupp.com/blog/2013/12/09/improve-your-python-understanding-unit-testing/ Best, Amit. -- http://echorand.me _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
