Braintree\SubscriptionSearch::status PHP Method

    public static function status()
    {
        return new MultipleValueNode('status', [Subscription::ACTIVE, Subscription::CANCELED, Subscription::EXPIRED, Subscription::PAST_DUE, Subscription::PENDING]);
    }

 public function testSearch_statusIsExpired()
 {
     $found = false;
     $collection = Braintree\Subscription::search([Braintree\SubscriptionSearch::status()->in([Braintree\Subscription::EXPIRED])]);
     foreach ($collection as $item) {
         $found = true;
         $this->assertEquals(Braintree\Subscription::EXPIRED, $item->status);
     }
     $this->assertTrue($found);
 }