<?php

namespace Elastica\Test\Aggregation;


use Elastica\Aggregation\ExtendedStats;
use Elastica\Document;
use Elastica\Query;

class ExtendedStatsTest extends BaseAggregationTest
{
    protected function setUp()
    {
        parent::setUp();
        $this->_index = $this->_createIndex("extended_stats");
        $docs = array(
            new Document("1", array("price" => 5)),
            new Document("2", array("price" => 8)),
            new Document("3", array("price" => 1)),
            new Document("4", array("price" => 3)),
        );
        $this->_index->getType("test")->addDocuments($docs);
        $this->_index->refresh();
    }

    public function testExtendedStatsAggregation()
    {
        $agg = new ExtendedStats("stats");
        $agg->setField("price");

        $query = new Query();
        $query->addAggregation($agg);
        $results = $this->_index->search($query)->getAggregation("stats");

        $this->assertEquals(4, $results['count']);
        $this->assertEquals(1, $results['min']);
        $this->assertEquals(8, $results['max']);
        $this->assertEquals((5 + 8 + 1 + 3) / 4.0, $results['avg']);
        $this->assertEquals((5 + 8 + 1 + 3), $results['sum']);
        $this->assertTrue(array_key_exists('sum_of_squares', $results));
    }
}