Non ordered multi term choices should not throw elasticsearch exception.

Author: asev

Filters/Widget/AbstractSingleRequestValueFilter.php

@@ -37,6 +37,7 @@ public function getState(Request $request)
         $value = $request->get($this->getRequestField());
 
         if (isset($value) && $value !== '') {
+            $value = is_array($value) ? array_values($value) : $value;
             $state->setActive(true);
             $state->setValue($value);
             $state->setUrlParameters([$this->getRequestField() => $value]);

Tests/Functional/Filters/Widget/Choice/MultiTermChoiceTest.php

@@ -78,6 +78,9 @@ public function getTestResultsData()
         // Case #2 all elements.
         $out[] = [new Request(['choice' => ['red', 'green', 'blue']]), ['1', '2', '3', '4', '5']];
 
+        // Case #3 non ordered choices.
+        $out[] = [new Request(['choice' => [0 => 'black', 2 => 'red']]), ['1', '3']];
+
         return $out;
     }