<?php

namespace Elastica\Test\Aggregation;


use Elastica\Document;
use Elastica\Aggregation\Histogram;
use Elastica\Query;

class HistogramTest extends BaseAggregationTest
{
    protected function setUp()
    {
        parent::setUp();
        $this->_index = $this->_createIndex("histogram");
        $docs = array(
            new Document("1", array("price" => 5, "color" => "blue")),
            new Document("2", array("price" => 8, "color" => "blue")),
            new Document("3", array("price" => 1, "color" => "red")),
            new Document("4", array("price" => 30, "color" => "green")),
            new Document("5", array("price" => 40, "color" => "red")),
            new Document("6", array("price" => 35, "color" => "green")),
            new Document("7", array("price" => 42, "color" => "red")),
            new Document("8", array("price" => 41, "color" => "blue")),
        );
        $this->_index->getType("test")->addDocuments($docs);
        $this->_index->refresh();
    }

    public function testHistogramAggregation()
    {
        $agg = new Histogram("hist", "price", 10);
        $agg->setMinimumDocumentCount(0); // should return empty buckets

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

        $buckets = $results['buckets'];
        $this->assertEquals(5, sizeof($buckets));
        $this->assertEquals(30, $buckets[3]['key']);
        $this->assertEquals(2, $buckets[3]['doc_count']);
    }
}