How to get other Gem helpers into my Engine Gem's tests?

Question

I'm trying to write tests for an engine gem I'm writing. I'm using Rspec and the tests seem to be running fine. But whenever a view uses a helper from another gem, such as "will_paginate" or "ransack", I get an "undefined method" error.

I've tried including the other gems in my gem's Gemfile (in addition to the engine.gemspec file) as well as the dummy app's Gemfile, but I get the same error. I've also tried including the gems in the spec/spec_helper.rb file.

So I've tried most of the things mentioned here:

Setup RSpec to test a gem (not Rails)

Usually, for Rspec tests for a regular Rails app, these helpers seem to be just included some how since I don't have this issue running tests for a regular Rails app.

I also have been needing to namespace my url helpers in the views with something like: engine.resources_path

I'm not sure if that's a symptom of some configuration I've messed up on.

Everything in the engine runs fine when mounted to another app and viewed on the browser.

Any ideas?

Answer 1

Turns out a better approach is to stub out methods from gems since the gem should be testing their own methods anyways. Please let me know if I'm misunderstanding anything. Thanks!