API objects return nil when dereferenced with non-existing method

[jasonbuehler]

Issue summary

When I call a method on a ShopifyAPI api object that doesn't exist it returns nil instead of raising NoMethodError

• shopify_api version: 13.4
• Ruby version:
• Operating system:

Expected behavior

An exception should be raised NoMethodError

Actual behavior

The method call returns nil

Steps to reproduce the problem

1. Instantiate a ShopifyAPI ruby object (I used an api product)
2. Dereference with a non-existent method

[matteodepalo]

Hi @jasonbuehler, thank you for opening this issue which I'm linking to the other one you've opened as they are related #1273

It seems like the method_missing implementation could be improved to raise NoMethodError in case the instance variable is not defined. I'll take a not of this and add this issue to our backlog together with the other one you've opened.