'Verify deleting from dataset works.'

def test_delete(self):

    del self.founders[0]
    self.assertEqual(self.founders[:], [self.george, self.tom])
    self.assertEqual(self.founders.height, 2)
    self.assertEqual(self.founders.width, 3)
    del self.founders[1]
    self.assertEqual(self.founders[:], [self.george])
    self.assertEqual(self.founders.height, 1)
    self.assertEqual(self.founders.width, 3)
    self.assertRaises(IndexError, self.founders.__delitem__, 3)
