test_basic.py

import unittest

import inspect
import importlib

import app_config # my config for this application


class RequirementsTestCase(unittest.TestCase):
    def test_requirement_exist(self):
        with open(app_config.REQUIREMENTS) as f: # this config option is the complete file name in project, a requirements.txt
            for req_name in f:
                module_instance = importlib.import_module(req_name.strip()) # strip, strip, strip!
                self.assertTrue(inspect.ismodule(module_instance))