Add tests

Author: deguif

test/Elastica/QueryTest.php

@@ -572,13 +572,16 @@ public function testSetTrackTotalHits()
 
         $resultSet = $index->search($query);
         $this->assertEquals(50, $resultSet->getTotalHits());
+        $this->assertEquals('eq', $resultSet->getTotalHitsRelation());
 
         $query->setTrackTotalHits(false);
         $resultSet = $index->search($query);
         $this->assertEquals(0, $resultSet->getTotalHits());
+        $this->assertEquals('eq', $resultSet->getTotalHitsRelation());
 
         $query->setTrackTotalHits(25);
         $resultSet = $index->search($query);
         $this->assertEquals(25, $resultSet->getTotalHits());
+        $this->assertEquals('gte', $resultSet->getTotalHitsRelation());
     }
 }

test/Elastica/ResultSetTest.php

@@ -27,6 +27,7 @@ public function testGetters()
 
         $this->assertInstanceOf(ResultSet::class, $resultSet);
         $this->assertEquals(3, $resultSet->getTotalHits());
+        $this->assertEquals('eq', $resultSet->getTotalHitsRelation());
         $this->assertGreaterThan(0, $resultSet->getMaxScore());
         $this->assertNotTrue($resultSet->hasTimedOut());
         $this->assertNotTrue($resultSet->hasAggregations());