Trying to implement python TestSuite

Question

I have two test cases (two different files) that I want to run together in a Test Suite. I can get the tests to run just by running python "normally" but when I select to run a python-unit test it says 0 tests run. Right now I'm just trying to get at least one test to run correectly.

import usertest
import configtest # first test
import unittest   # second test

testSuite = unittest.TestSuite()
testResult = unittest.TestResult()
confTest = configtest.ConfigTestCase()
testSuite.addTest(configtest.suite())
test = testSuite.run(testResult)
print testResult.testsRun # prints 1 if run "normally"

Here's an example of my test case set up

class ConfigTestCase(unittest.TestCase):
    def setUp(self):

        ##set up code

    def runTest(self):

        #runs test


def suite():
    """
        Gather all the tests from this module in a test suite.
    """
    test_suite = unittest.TestSuite()
    test_suite.addTest(unittest.makeSuite(ConfigTestCase))
    return test_suite

if __name__ == "__main__":
    #So you can run tests from this module individually.
    unittest.main()

What do I have to do to get this work correctly?

Solution 1

you want to use a testsuit. So you need not call unittest.main(). Use of testsuit should be like this:

#import usertest
#import configtest # first test
import unittest   # second test

class ConfigTestCase(unittest.TestCase):
    def setUp(self):
        print 'stp'
        ##set up code

    def runTest(self):
        #runs test
        print 'stp'

def suite():
    """
        Gather all the tests from this module in a test suite.
    """
    test_suite = unittest.TestSuite()
    test_suite.addTest(unittest.makeSuite(ConfigTestCase))
    return test_suite

mySuit=suite()

runner=unittest.TextTestRunner()
runner.run(mySuit)

Solution 2

All of the code to create a loader and suite is unnecessary. You should write your tests so that they are runnable via test discovery using your favorite test runner. That just means naming your methods in a standard way, putting them in an importable place (or passing a folder containing them to the runner), and inheriting from unittest.TestCase. After you've done that, you can use python -m unittest discover at the simplest, or a nicer third party runner to discover and then run your tests.

Solution 3

If you are trying to manually collect TestCases, this is useful: unittest.loader.findTestCases():

# Given a module, M, with tests:
mySuite = unittest.loader.findTestCases(M)
runner = unittest.TextTestRunner()
runner.run(mySuit)

Solution 4

I am assuming you are referring to running python-unit test against the module that consolidates the two test. It will work if you create test case for that module ie. subclassing unittest.TestCase and having a simple test that starts with the word 'test'.

e.g.

class testall(unittest.TestCase):

    def test_all(self):           
        testSuite = unittest.TestSuite()
        testResult = unittest.TestResult()
        confTest = configtest.ConfigTestCase()
        testSuite.addTest(configtest.suite())
        test = testSuite.run(testResult)
        print testResult.testsRun # prints 1 if run "normally"

if __name__ == "__main__": 
      unittest.main()

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Comments

[avoliva]

Thank you, thank worked perfectly for what I needed. Thanks a bunch!

[timgeb]

Thank you so much for this answer. Why on earth do I need to call unittest.makeSuite in order to add a test to an existing suite?

[Olivier Pons]

In the comments, it's Gather or Gathers?

[dileep nandanam]

@OlivierPons its gather. Advises the tester

[Olivier Pons]

Ok I thought "Gather all the tests from this module in a test suite." meant "This function gathers all the tests from this module in a test suite." (That's why I thought an s should be added but I'm very bad in english, sorry)

[szeitlin]

I'm running into some weird test isolation issues using unittest discover, which don't seem to show up if I run a single test file or one TestCase class at a time. I'm not sure if it's a race condition or what, but it's one situation where a defined TestSuite might be helpful.