BUGFIX EXTCERT-862 Proper parsing of response in case if there is no subdomains.

Author: sibprogrammer

src/PleskX/Api/Operator/Subdomain.php

@@ -71,6 +71,9 @@ public function getAll($field = null, $value = null)
 
         $items = [];
         foreach ($response->xpath('//result') as $xmlResult) {
+            if (empty($xmlResult->data)) {
+                continue;
+            }
             $item = new Struct\Info($xmlResult->data);
             $item->id = (int)$xmlResult->id;
             $items[] = $item;

tests/SubdomainTest.php

@@ -82,5 +82,8 @@ public function testGetAll()
 
         static::$_client->subdomain()->delete('id', $subdomain->id);
         static::$_client->subdomain()->delete('id', $subdomain2->id);
+
+        $subdomainsInfo = static::$_client->subdomain()->getAll();
+        $this->assertEmpty($subdomainsInfo);
     }
 }