Alcaeus\MongoDbAdapter\Tests\Mongo\MongoCollectionTest::testMapReduce PHP Method

    public function testMapReduce()
    {
        $data = array(array('username' => 'jones', 'likes' => 20.0, 'text' => 'Hello world!'), array('username' => 'bob', 'likes' => 100.0, 'text' => 'Hello world!'), array('username' => 'bob', 'likes' => 100.0, 'text' => 'Hello world!'));
        $collection = $this->getCollection();
        $collection->batchInsert($data);
        $map = 'function() {
            emit(this.username, { count: 1, likes: this.likes });
        }';
        $reduce = 'function(key, values) {
            var result = {count: 0, likes: 0};

            values.forEach(function(value) {
              result.count += value.count;
              result.likes += value.likes;
            });

            return result;
        }';
        $finalize = 'function (key, value) { value.test = "test"; return value; }';
        $command = ['mapreduce' => $this->getCollection()->getName(), 'map' => new \MongoCode($map), 'reduce' => new \MongoCode($reduce), 'query' => (object) [], 'out' => ['inline' => true], 'finalize' => new \MongoCode($finalize)];
        $result = $this->getDatabase()->command($command);
        $expected = [['_id' => 'bob', 'value' => ['count' => 2.0, 'likes' => 200.0, 'test' => 'test']], ['_id' => 'jones', 'value' => ['count' => 1.0, 'likes' => 20.0, 'test' => 'test']]];
        $this->assertSame(1.0, $result['ok']);
        $this->assertSame($expected, $result['results']);
    }