Lib/test/test_importlib/import_/test_api.py

from . import util
import unittest


class APITest(unittest.TestCase):

    """Test API-specific details for __import__ (e.g. raising the right
    exception when passing in an int for the module name)."""

    def test_name_requires_rparition(self):
        # Raise TypeError if a non-string is passed in for the module name.
        with self.assertRaises(TypeError):
            util.import_(42)

    def test_negative_level(self):
        # Raise ValueError when a negative level is specified.
        # PEP 328 did away with sys.module None entries and the ambiguity of
        # absolute/relative imports.
        with self.assertRaises(ValueError):
            util.import_('os', globals(), level=-1)


def test_main():
    from test.support import run_unittest
    run_unittest(APITest)


if __name__ == '__main__':
    test_main()