text: #
  # Copyright (c) nexB Inc. and others. All rights reserved.
  # http://nexb.com and https://github.com/nexB/scancode-toolkit/
  # The ScanCode software is licensed under the Apache License version 2.0.
  # Data generated with ScanCode require an acknowledgment.
  # ScanCode is a trademark of nexB Inc.
  #
  # You may not use this software except in compliance with the License.
  # You may obtain a copy of the License at: http://apache.org/licenses/LICENSE-2.0
  # Unless required by applicable law or agreed to in writing, software distributed
  # under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
  # CONDITIONS OF ANY KIND, either express or implied. See the License for the
  # specific language governing permissions and limitations under the License.
  #
  # When you publish or redistribute any data created with ScanCode or any ScanCode
  # derivative work, you must accompany this data with the following acknowledgment:
  #
  #  Generated with ScanCode and provided on an "AS IS" BASIS, WITHOUT WARRANTIES
  #  OR CONDITIONS OF ANY KIND, either express or implied. No content created from
  #  ScanCode should be considered or used as legal advice. Consult an Attorney
  #  for any legal advice.
  #  ScanCode is a free software code scanning tool from nexB Inc. and others.
  #  Visit https://github.com/nexB/scancode-toolkit/ for support and download.
  
  from __future__ import absolute_import
  from __future__ import print_function
  from __future__ import unicode_literals
  
  from unittest import TestCase
  
  from packagedcode.licensing import get_normalized_expression
  
  
  class TestLicensing(TestCase):
      def test_get_normalized_expression(self):
          assert 'mit' == get_normalized_expression('mit')
          assert 'apache-2.0 AND unknown' == get_normalized_expression('mit or asasa or Apache-2.0')
          assert 'apache-2.0 AND unknown' == get_normalized_expression('mit or asasa or Apache-2.0')
          assert 'mit OR apache-2.0' == get_normalized_expression('mit asasa or Apache-2.0')
          assert get_normalized_expression('') is None
          assert get_normalized_expression(None) is None
  