MAGETWO-44555: Exception in Advanced Search if used special symbols

 - Fixed static tests

Author: aohorodnyk

lib/internal/Magento/Framework/Search/Request/Cleaner.php

@@ -172,7 +172,7 @@ private function cleanFilter($filterName)
             case FilterInterface::TYPE_RANGE:
                 $keys = ['from', 'to'];
                 foreach ($keys as $key) {
-                    if (isset($filter[$key]) && preg_match('/^\$(.+)\$$/si', $filter[$key], $matches)) {
+                    if (isset($filter[$key]) && preg_match('/^\$(.+)\$$/si', $filter[$key])) {
                         unset($this->requestData['filters'][$filterName][$key]);
                     }
                 }

lib/internal/Magento/Framework/Search/Test/Unit/Request/BinderTest.php

@@ -52,7 +52,14 @@ public function testBind()
         $expectedResult = [
             'dimensions' => ['scope' => ['value' => 'default']],
             'queries' => ['query' => ['value' => 'match_query', 'is_bind' => true]],
-            'filters' => ['filter' => ['from' => 'filter_from', 'to' => 'filter_to', 'value' => 'filter_value', 'is_bind' => true]],
+            'filters' => [
+                'filter' => [
+                    'from' => 'filter_from',
+                    'to' => 'filter_to',
+                    'value' => 'filter_value',
+                    'is_bind' => true
+                ]
+            ],
             'aggregations' => ['price' => ['method' => 'filter_method', 'is_bind' => true]],
             'from' => 1,
             'size' => 10,