feat: add payment information endpoint for guest

Author: ahinkle

src/Api/GuestCarts.php

@@ -102,10 +102,23 @@ public function shippingInformation($cartId, $body = [])
     /**
      * List available payment methods for a specified shopping cart. This call returns an array of objects, but detailed information about each object’s attributes might not be included.
      *
+     * @param  string $cartId
      * @return array
      */
     public function paymentMethods($cartId)
     {
         return $this->get('/guest-carts/'.$cartId.'/payment-methods');
     }
+
+    /**
+     * Set payment information and place order for a specified cart.
+     *
+     * @param  string $cartId
+     * @param  array  $body
+     * @return array
+     */
+    public function paymentInformation($cartId, $body = [])
+    {
+        return $this->post('/guest-carts/'.$cartId.'/payment-information', $body);
+    }
 }

tests/Api/GuestCartsTest.php

@@ -121,4 +121,17 @@ public function test_can_call_guest_carts_payment_methods()
 
         $this->assertTrue($api->ok());
     }
+
+    public function test_can_call_guest_carts_payment_information()
+    {
+        Http::fake([
+            '*rest/all/V1/guest-carts/foo/payment-information' => Http::response([], 200),
+        ]);
+
+        $magento = new Magento();
+
+        $api = $magento->api('guestCarts')->paymentInformation('foo', ['bar']);
+
+        $this->assertTrue($api->ok());
+    }
 }