cocorobolx/skulpt/test/unit/test_import.py

import unittest
import sys

class ImportDottedNamesTest(unittest.TestCase):

    def test_dotted_fromname(self):
        from unittest.gui import TestCaseGui
        self.assertTrue(TestCaseGui is not None)

class ImportFromModulesTest(unittest.TestCase):

    def test_from_submodule(self):
        # Try to delete the module from the internal module list
        # sys.modules is a reference on Sk.sysmodules 
        # Should allow a fresh import -> testing the intended feature
        try:
            del sys.modules["unittest"]
        except:
            pass

        try:
            del sys.modules["unittest.gui"]
        except:
            pass

        from unittest import gui as mystuff
        self.assertTrue(mystuff is not None)

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