En Mon, 05 Oct 2009 23:12:02 -0300, Joel Smith <js-pythonl...@jk1.net>
escribió:
I want to make some test case classes that can have some data passed in
to modify the way they behave. I can't see a straightforward manner to
pass data to an __init__() method of a class derived from
unittest.TestCase, or to pass data to a test function within that
class. Being a C++ guy, I thought "If only Python had something
equivalent to boost::bind, I'd be fine," and then I discovered
functools.partial. I found a post showing how to create classes using
partial, and I thought I was good to go. The post I found is here:
http://mail.python.org/pipermail/bangpypers/2008-December/000974.html
So I adapted that code to see if it worked in the context of unittest.
When I run the code, it acts like the parameter I provided with partial
isn't even there. Any ideas?
The problem isn't with partial - which works fine. By using
unittest.main() your're building the default test suite using the default
rules - your customized suite isn't used at all. Try with:
if __name__ == '__main__':
unittest.TextTestRunner().run(suite())
Note that you don't *have* to use partial in this case, as you're building
the suite yourself. Just create the TestCase instances manually:
suite = unittest.TestSuite([
TestGenericWindow('testit', 'brown'),
TestGenericWindow('testit', 'blue'),
TestGenericWindow('testit', 'green')
])
unittest.TextTestRunner().run(suite)
You may get rid of the 'testit' repetitive argument if you omit it from
__init__ -- the generic TestLoader won't like it, but it doesn't like it
right now because of the color argument, so you don't lose anything.
Another approach, if you want to stay with the built-in testing
infrastructure:
class TestGenericWindow(unittest.TestCase):
def _testit(self, color):
# actual test implementation
GenericWindow('foo', width=100, height=100, color=color)
def test_brown(self):
return self._testit('brown') # provide desired parameters
def test_blue(self):
return self._testit('blue')
unittest.main() should still work with this TestCase as written, without a
custom Suite/Loader.
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
