fix tests without asserts

Author: aawnu

test/Unit/EventTest.php

@@ -265,6 +265,8 @@ public function test_refund()
 
     public function test_refund_full_succeeds_without_items()
     {
+        $this->expectNotToPerformAssertions();
+
         $refund = Event\Refund::new()->setTransactionId(1)->isFullRefund(true);
 
         $this->analytics->addEvent($refund);

test/Unit/UserDataTest.php

@@ -39,6 +39,8 @@ public function test_user_data_is_fillable()
 
     public function test_user_data_is_sendable()
     {
+        $this->expectNotToPerformAssertions();
+
         $uad = $this->analytics->userdata();
         $uad->setEmail("[email protected]");
         $uad->setPhone(4500000000);