Doctrine\ODM\MongoDB\Tests\Aggregation\BuilderTest::testAggregationBuilder PHP Метод

    public function testAggregationBuilder()
    {
        $this->insertTestData();
        $builder = $this->dm->createAggregationBuilder(\Documents\BlogPost::class);
        $aggregationResult = $builder->hydrate(\Documents\BlogTagAggregation::class)->unwind('$tags')->group()->field('id')->expression('$tags')->field('numPosts')->sum(1)->sort('numPosts', 'desc')->execute();
        $this->assertInstanceOf('Doctrine\\ODM\\MongoDB\\CommandCursor', $aggregationResult);
        $this->assertCount(2, $aggregationResult);
        $results = $aggregationResult->toArray();
        $this->assertInstanceOf('Documents\\BlogTagAggregation', $results[0]);
        $this->assertSame('baseball', $results[0]->tag->name);
        $this->assertSame(3, $results[0]->numPosts);
    }