#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Copyright (c) 2009-2011, Nicolas Clairon
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# modification, are permitted provided that the following conditions are met:
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import unittest

from mongokit import *

class MapReduceTestCase(unittest.TestCase):
    def setUp(self):
        self.connection = Connection()
        self.col = self.connection['test']['mongokit']
        
    def tearDown(self):
        self.connection.drop_database('test')

    def test_simple_mapreduce(self):
        class MyDoc(Document):
            structure = {
                'user_id': int,
            }
        self.connection.register([MyDoc])

        for i in range(20):
            self.col.MyDoc({'user_id':i}).save()

        class MapDoc(Document):
            """
            document which handle result of map/reduce
            """
            structure = {
                'value':float,
            }
        self.connection.register([MapDoc])   

        m = 'function() { emit(this.user_id, 1); }'
        r = 'function(k,vals) { return 1; }'
        mapcol = self.col.map_reduce(m,r,"testresults")
        mapdoc = mapcol.MapDoc.find_one()
        assert mapdoc == {u'_id': 0.0, u'value': 1.0}, mapdoc
        assert isinstance(mapdoc, MapDoc)