new_contents: """
      test_validators
      ~~~~~~~~~~~~~~
      
      Unittests for bundled validators.
      
      :copyright: 2007-2008 by James Crasta, Thomas Johansson.
      :license: MIT, see LICENSE.txt for details.
  """
  
  from py.test import raises
  from wtforms.validators import ValidationError, length, url, not_empty, email, ip_address
  
  class DummyForm(object):
      pass
  
  class DummyField(object):
      def __init__(self, data):
          self.data = data
  
  form = DummyForm()
  
  def test_email():
      assert email(form, DummyField('foo@bar.dk')) == None
      assert email(form, DummyField('123@bar.dk')) == None
      assert email(form, DummyField('foo@456.dk')) == None
      assert email(form, DummyField('foo@bar456.info')) == None
      raises(ValidationError, email, form, DummyField('foo')) == None
      raises(ValidationError, email, form, DummyField('bar.dk')) == None
      raises(ValidationError, email, form, DummyField('foo@')) == None
      raises(ValidationError, email, form, DummyField('@bar.dk')) == None
      raises(ValidationError, email, form, DummyField('foo@bar')) == None
      raises(ValidationError, email, form, DummyField('foo@bar.ab12')) == None
      raises(ValidationError, email, form, DummyField('foo@bar.abcde')) == None
  
  def test_length():
      field = DummyField('foobar')
      assert length(min=2, max=6)(form, field) == None
      raises(ValidationError, length(min=7), form, field)
      raises(ValidationError, length(max=5), form, field)
      
  def test_url():
      assert url()(form, DummyField('http://foobar.dk')) == None
      assert url()(form, DummyField('http://foobar.dk/')) == None
      assert url()(form, DummyField('http://foobar.dk/foobar')) == None
      raises(ValidationError, url(), form, DummyField('http://foobar'))
      raises(ValidationError, url(), form, DummyField('foobar.dk'))
      raises(ValidationError, url(), form, DummyField('http://foobar.12'))
  
  def test_not_empty():
      assert not_empty()(form, DummyField('foobar')) == None
      raises(ValidationError, not_empty(), form, DummyField(''))
      raises(ValidationError, not_empty(), form, DummyField(' '))
  
  def test_ip_address():
      assert ip_address(form, DummyField('127.0.0.1')) == None
      raises(ValidationError, ip_address, form, DummyField('abc.0.0.1'))
      raises(ValidationError, ip_address, form, DummyField('1278.0.0.1'))
      raises(ValidationError, ip_address, form, DummyField('127.0.0.abc'))
   
  
subject: Add first basic unittests using py.test