tests/utils/test_module_loading.py

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# to you under the Apache License, Version 2.0 (the
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#
#   http://www.apache.org/licenses/LICENSE-2.0
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import unittest

from airflow.utils.module_loading import import_string


class TestModuleImport(unittest.TestCase):
    def test_import_string(self):
        cls = import_string('airflow.utils.module_loading.import_string')
        self.assertEqual(cls, import_string)

        # Test exceptions raised
        with self.assertRaises(ImportError):
            import_string('no_dots_in_path')
        msg = 'Module "airflow.utils" does not define a "nonexistent" attribute'
        with self.assertRaisesRegex(ImportError, msg):
            import_string('airflow.utils.nonexistent')