TestSuite requires result object for run()

I am getting this error when I try to run my TestSuite:

Traceback (most recent call last):
  File "filemerge_test.py", line 98, in <module>
    main(sys.argv)
  File "filemerge_test.py", line 92, in main
    filemerge_test.test_runner()
  File "filemerge_test.py", line 20, in test_runner
    self.run()
TypeError: run() takes at least 2 arguments (1 given)

TestSuite code:

from testcases import TestFunctionality

class FileMergerTest(unittest.TestSuite):
    def __init__(self, log, options):
        super(FileMergerTest, self).__init__()
        self.options = options
        self.log = log

    def test_runner(self):
        self.addTest(TestFunctionality(self.log, self.options))
        self.run()

def main():
    ...
    ...
    filemerge_test = FileMergerTest(log, options)
    filemerge_test.test_runner()

After reading the documentation, I believe my self.run() method requires a result object. I'm not sure how to get a result object from my TestCase