I'm evaluating "test frameworks" for automated system tests; so far I'm looking for a python framework. In py.test or nose I can't see something like the EXPECT macros I know from google testing framework. I'd like to make several assertions in one test while not aborting the test at the first failure. Am I missing something in these frameworks or does this not work? Does anybody have suggestions for python test framworks usable for automated system tests?
I was wanting something similar for functional testing that I'm doing using nose. I eventually came up with this:
def raw_print(str, *args):
out_str = str % args
sys.stdout.write(out_str)
class DeferredAsserter(object):
def __init__(self):
self.broken = False
def assert_equal(self, expected, actual):
outstr = '%s == %s...' % (expected, actual)
raw_print(outstr)
try:
assert expected == actual
except AssertionError:
raw_print('FAILED\n\n')
self.broken = True
except Exception, e:
raw_print('ERROR\n')
traceback.print_exc()
self.broken = True
else:
raw_print('PASSED\n\n')
def invoke(self):
assert not self.broken
In other words, it's printing out strings indicating if a test passed or failed. At the end of the test, you call the invoke method which actually does the real assertion. It's definitely not preferable, but I haven't seen a Python testing framework that can handle this kind of testing. Nor have I gotten around to figuring out how to write a nose plugin to do this kind of thing. :-/