Services as Methods - python mode

gistfile1.py

# vim: set fileencoding=utf-8 :
import unittest
from element.plugins.node.mapper import Manager, Meta, MetaCollection, MetaListener
from element.node import Node
from ioc.event import Event
import datetime

class NodeImage(Node):
    pass

class MapperTest(unittest.TestCase):
    def test_add_method(self):
        class Manager(object):
            def get_uuid(self, node, *args, **kwargs):
                return "%s: %s" % (node.uuid, kwargs)

        def wrapper(function):
            return lambda node, *args, **kwargs: function(node, *args, **kwargs)

        def my_method(node):
            return "hello world! ~ uuid: %s" % node.uuid
            
        m = Manager()
        
        # attach new methods to the class
        setattr(NodeImage, 'my_method', my_method)
        setattr(NodeImage, 'class_method', lambda node, *args, **kwargs: m.get_uuid(node, *args, **kwargs))
        setattr(NodeImage, 'wrapper_method', wrapper(m.get_uuid))

        n = NodeImage("550e8400-e29b-41d4-a716-446655440000")

        self.assertEquals("hello world! ~ uuid: 550e8400-e29b-41d4-a716-446655440000", n.my_method())
        self.assertEquals("550e8400-e29b-41d4-a716-446655440000: {'foo': 'bar'}", n.class_method(foo='bar'))
        self.assertEquals("550e8400-e29b-41d4-a716-446655440000: {'foo': 'bar'}", n.wrapper_method(foo='bar'))