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<?php
namespace Elastica\Test\Aggregation;
use Elastica\Aggregation\Histogram;
use Elastica\Document;
use Elastica\Query;
class HistogramTest extends BaseAggregationTest
{
protected function _getIndexForTest()
{
$index = $this->_createIndex();
$index->getType('test')->addDocuments(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')),
));
$index->refresh();
return $index;
}
/**
* @group functional
*/
public function testHistogramAggregation()
{
$agg = new Histogram('hist', 'price', 10);
$agg->setMinimumDocumentCount(0); // should return empty buckets
$query = new Query();
$query->addAggregation($agg);
$results = $this->_getIndexForTest()->search($query)->getAggregation('hist');
$buckets = $results['buckets'];
$this->assertEquals(5, sizeof($buckets));
$this->assertEquals(30, $buckets[3]['key']);
$this->assertEquals(2, $buckets[3]['doc_count']);
}
}
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