new_contents: # Copyright 2015 0xc0170
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #     http://www.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.
  
  import argparse
  import os
  import yaml
  import shutil
  
  from unittest import TestCase
  
  from project_generator.commands import export, clean
  from .simple_project import project_1_yaml, projects_yaml, project_2_yaml
  
  class TestCleanCommand(TestCase):
  
      """test clean command"""
  
      def setUp(self):
          if not os.path.exists('test_workspace'):
              os.makedirs('test_workspace')
          # write project file
          with open(os.path.join(os.getcwd(), 'test_workspace/project_1.yaml'), 'wt') as f:
              f.write(yaml.dump(project_1_yaml, default_flow_style=False))
          # write project file
          with open(os.path.join(os.getcwd(), 'test_workspace/project_2.yaml'), 'wt') as f:
              f.write(yaml.dump(project_2_yaml, default_flow_style=False))
          # write projects file
          with open(os.path.join(os.getcwd(), 'test_workspace/projects.yaml'), 'wt') as f:
              f.write(yaml.dump(projects_yaml, default_flow_style=False))
  
          self.parser = argparse.ArgumentParser()
          subparsers = self.parser.add_subparsers(help='commands')
          self.export_subparser = subparsers.add_parser('export', help=export.help)
          self.clean_subparser = subparsers.add_parser('clean', help=export.help)
  
      def tearDown(self):
          # remove created directory
          shutil.rmtree('test_workspace', ignore_errors=True)
  
      def test_clean_one_project(self):
          # We first export project, then clean it
          export.setup(self.export_subparser)
          args = self.parser.parse_args(['export','-f','test_workspace/projects.yaml','-p','project_2',
              '-t', 'uvision'])
          export.run(args)
  
          # this should export a project to generated_projects/uvision_project_2/project_2.uvproj
          assert os.path.isfile('generated_projects/uvision_project_2/project_2.uvproj')
  
          # now clean
          clean.setup(self.clean_subparser)
          args = self.parser.parse_args(['clean','-f','test_workspace/projects.yaml','-p','project_2',
              '-t', 'uvision'])
          result = clean.run(args)
  
          assert not os.path.isfile('generated_projects/uvision_project_2/project_2.uvproj')
          assert not os.path.isdir('generated_projects/uvision_project_2')
  
subject: Test commands clean - addition