Add method setTrackTotalHits to Elastica\Query (#1663)

CHANGELOG.md

@@ -34,6 +34,7 @@ All notable changes to this project will be documented in this file based on the
 * Support string DSN in `\Elastica\Client` constructor for config argument [#1640](https://github.com/ruflin/Elastica/issues/1640)
 * Move Client configuration in a dedicated class
 * Added `callable` type hinting to `$callback` in `Client` constructor. [#1659](https://github.com/ruflin/Elastica/pull/1659)
+* Added `setTrackTotalHits` method to `Elastica\Query`[#1663](https://github.com/ruflin/Elastica/issues/1663)
 
 ### Improvements
 * Added `native_function_invocation` CS rule [#1606](https://github.com/ruflin/Elastica/pull/1606)

lib/Elastica/Query.php

@@ -441,4 +441,18 @@ public function setCollapse(Collapse $collapse): self
     {
         return $this->setParam('collapse', $collapse);
     }
+
+    /**
+     * Adds a track_total_hits argument.
+     *
+     * @param bool|int $trackTotalHits OPTIONAL Track total hits parameter (default = true)
+     *
+     * @return $this
+     *
+     * @see https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-body.html#request-body-search-track-total-hits
+     */
+    public function setTrackTotalHits($trackTotalHits = true)
+    {
+        return $this->setParam('track_total_hits', $trackTotalHits);
+    }
 }

test/Elastica/QueryTest.php

@@ -543,4 +543,16 @@ public function testCollapseSecondLevelArrayStructure()
         $this->assertArrayHasKey('collapse', $actual);
         $this->assertEquals($expected, $actual['collapse']);
     }
+
+    /**
+     * @group unit
+     */
+    public function testSetTrackTotalHits()
+    {
+        $query = new Query();
+        $param = false;
+        $query->setTrackTotalHits($param);
+
+        $this->assertEquals($param, $query->getParam('track_total_hits'));
+    }
 }