Add unit tests [PREMIUM-4]

tests/unit/Cron/Workers/SendingServiceKeyCheckTest.php

@@ -11,12 +11,6 @@ use MailPoet\Services\Bridge;
 
 class SendingServiceKeyCheckTest extends MailPoetTest {
   function _before() {
-    $this->emails = array(
-      'soft_bounce@example.com',
-      'hard_bounce@example.com',
-      'good_address@example.com'
-    );
-
     $this->sskeycheck = new SendingServiceKeyCheck(microtime(true));
   }
 
@@ -99,6 +93,11 @@ class SendingServiceKeyCheckTest extends MailPoetTest {
   }
 
   function testItProcesses() {
+    $this->sskeycheck->bridge = Stub::make(
+      new Bridge,
+      array('checkKey' => array('code' => Bridge::MAILPOET_KEY_VALID)),
+      $this
+    );
     $this->setMailPoetSendingMethod();
     $this->createScheduledQueue();
     $this->createRunningQueue();