public function testAllowsMultipleValuesPerKey()
{
$q = new Query();
$q->add('facet', 'size');
$q->add('facet', 'width');
$q->add('facet.field', 'foo');
// Use the duplicate aggregator
$q->setAggregator($q::duplicateAggregator());
$this->assertEquals('facet=size&facet=width&facet.field=foo', (string) $q);
}
