/**
  * @covers \Elastica\Query\Builder::sortFields
  */
 public function testSortFields()
 {
     $this->assertSame($this->builder, $this->builder->sortFields(array('field1' => 'asc', 'field2' => 'desc', 'field3' => 'asc')));
     $this->assertSame('{"sort":[{"field1":"asc"},{"field2":"desc"},{"field3":"asc"}]}', (string) $this->builder);
 }