old_contents: __author__ = 'breddels'
  
  import unittest
  import vaex.image
  import numpy as np
  default_size = 2
  default_shape = (default_size, default_size)
  
  class TestImage(unittest.TestCase):
      def test_blend(self):
          black = vaex.image.background(default_shape, "black")
          white = vaex.image.background(default_shape, "white")
          transparant_black = black * 1
          transparant_black[...,3] = 100
          for mode in vaex.image.modes:
              self.assert_(np.all(vaex.image.blend([black, white]) == white))
              self.assert_(np.all(vaex.image.blend([white, black]) == black))
  
              grey = vaex.image.blend([white, transparant_black], mode)
  
              self.assert_(np.all(grey[...,0:3] < white[...,0:3]))
              self.assert_(np.all(grey[...,0:3] > black[...,0:3]))
  
      def test_pil(self):
          white = vaex.image.background(default_shape, "white")
          # not much to test
          im = vaex.image.rgba_2_pil(white)
          raw_data = vaex.image.pil_2_data(im)
          url = vaex.image.rgba_to_url(white)
  
  
  if __name__ == '__main__':
      unittest.main()
  
  
new_contents: __author__ = 'breddels'
  
  import unittest
  import vaex as vx
  import vaex.utils
  import vaex.image
  import numpy as np
  default_size = 2
  default_shape = (default_size, default_size)
  
  class TestImage(unittest.TestCase):
      def test_blend(self):
          black = vaex.image.background(default_shape, "black")
          white = vaex.image.background(default_shape, "white")
          transparant_black = black * 1
          transparant_black[...,3] = 100
          for mode in vaex.image.modes:
              self.assert_(np.all(vaex.image.blend([black, white]) == white))
              self.assert_(np.all(vaex.image.blend([white, black]) == black))
  
              grey = vaex.image.blend([white, transparant_black], mode)
  
              self.assert_(np.all(grey[...,0:3] < white[...,0:3]))
              self.assert_(np.all(grey[...,0:3] > black[...,0:3]))
  
      def test_pil(self):
          white = vaex.image.background(default_shape, "white")
          # not much to test
          im = vaex.image.rgba_2_pil(white)
          raw_data = vaex.image.pil_2_data(im)
          url = vaex.image.rgba_to_url(white)
  
  
  class TestAttrDict(unittest.TestCase):
      def test_attrdict(self):
          d = vx.utils.AttrDict()
          d.a = 1
          self.assertEqual(d.a, 1)
          with self.assertRaises(KeyError):
              a = d.doesnotexist
  
  
          d = vx.utils.AttrDict(a=1)
          print(d.__dict__)
          self.assertEqual(d.a, 1)
          with self.assertRaises(KeyError):
              a = d.doesnotexist
  
  if __name__ == '__main__':
      unittest.main()
  
  
subject: test for attrdict