update correct api response for getContactIdsInList

- AUT-2568

Co-authored-by: Laszlo Halasz <laszlo.halasz@emarsys.com>
Co-authored-by: fqqdk <csaba.simon@emarsys.com>

src/Suite/Api/ContactList.php

@@ -113,7 +113,7 @@ public function getContactsOfList(int $customerId, int $contactListId, int $limi
     {
         try {
             $response = $this->apiClient->get($this->endPoints->contactsOfList($customerId, $contactListId, $limit, $offset));
-            return !empty($response['data']) ? $response['data'] : [];
+            return $response['data'] ?? [];
         } catch (Error $error) {
             throw new RequestFailed('Could not fetch contact ids: ' . $error->getMessage(), $error->getCode(), $error);
         }
@@ -122,7 +122,8 @@ public function getContactsOfList(int $customerId, int $contactListId, int $limi
     public function getContactIdsInList(int $customerId, int $contactListId)
     {
         try {
-            return $this->apiClient->get($this->endPoints->contactIdsInList($customerId, $contactListId));
+            $response = $this->apiClient->get($this->endPoints->contactIdsInList($customerId, $contactListId));
+            return $response['data'] ?? [];
         } catch (Error $error) {
             throw new RequestFailed('Could not fetch contact ids: ' . $error->getMessage(), $error->getCode(), $error);
         }

test/unit/Suite/Api/ContactListTest.php

@@ -242,7 +242,7 @@ public function getContactIdsInList_Perfect_Perfect()
         $response = ['value' => [1, 2, 3], 'next' => null];
         $this->apiClient->expects($this->once())->method('get')->with(
             $this->endPoints->contactIdsInList($this->customerId, $this->contactListId)
-        )->willReturn($response);
+        )->willReturn($this->apiSuccess($response));
 
         $result = $this->listService->getContactIdsInList($this->customerId, $this->contactListId);
         $this->assertEquals($response, $result);