public function testGetApi() { $stripe = new Stripe("key"); $cards = $stripe->cards(); $this->assertInstanceOf('Stripe\\Api\\Cards', $cards); $customers = $stripe->customers; $this->assertInstanceOf('Stripe\\Api\\Customers', $customers); $invoiceItems = $stripe->invoiceItems; $this->assertInstanceOf('Stripe\\Api\\InvoiceItems', $invoiceItems); }