def METHOD_NAME(self):
    filepath = TESTFN + '.txt'
    cabpath = TESTFN + '.cab'
    self.addCleanup(unlink, filepath)
    with open(filepath, 'wb'):
        pass
    self.addCleanup(unlink, cabpath)
    msilib.FCICreate(cabpath, [(filepath, 'test.txt')])
    self.assertTrue(os.path.isfile(cabpath))