new_contents: #!/usr/bin/env python2.5
  #
  # Copyright 2011 the Melange authors.
  #
  # 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.
  
  """Tests for cleaning methods in GSoC.
  """
  
  __authors__ = [
    '"Praveen Kumar" <praveen97uma@gmail.com>'
    ]
  
  
  import unittest
  
  from django import forms
  
  from soc.modules.gsoc.logic import cleaning
  
  class Form(object):
    """A dummy form class for CleaningTest.
    """
    def __init__(self):
      self.cleaned_data = {}
      self._errors = {}
  
  class CleaningTest(unittest.TestCase):
    """Tests for cleaning methods in GSoC.
    """
    def setUp(self):
      self.form = Form()
  
    def testCleanTagsList(self):
      """Tests if tags are cleaned and validated.
      """
      field_name = 'tags'
      clean_data = cleaning.cleanTagsList(field_name)
  
      #Test valid tags.
      field_value = "python\ndjango\ntesting"
      data_to_clean = {field_name: field_value}
      self.form.cleaned_data = data_to_clean
      expected = field_value.split('\n')
      self.assertEqual(clean_data(self.form), expected)
  
      #Test if extra-whitespace in the tags string are removed.
      field_value = "python  \n  django\n testing"
      data_to_clean = {field_name: field_value}
      self.form.cleaned_data = data_to_clean
      temp = field_value.split('\n')
      expected = [tag.strip() for tag in temp]
      self.assertEqual(clean_data(self.form), expected)
  
      #Invalid tags.
      field_value = "python\n &%tag \n#^ase"
      data_to_clean = {field_name: field_value}
      self.form.cleaned_data = data_to_clean
      self.assertRaises(forms.ValidationError, clean_data, self.form)
  
  
subject: Add tests for gsoc.logic.cleaning.