rspec 3 - stub a class method

ruby-on-rails ruby rspec rspec3
Peter Sankauskas picture Peter Sankauskas · Jul 31, 2014 · Viewed 67.1k times · Source

I am upgrading from rspec 2.99 to rspec 3.0.3 and have converted instance methods to use allow_any_instance_of, but haven't figured out how to stub a class method. I have code like this:

module MyMod
  class Utils
    def self.find_x(myarg)
      # Stuff
    end
  end
end

and my rspec 2 test does this:

MyMod::Utils.stub(:find_x).and_return({something: 'testing'})

What is the Rspec 3 way of doing this?

Answer

Arup Rakshit picture Arup Rakshit · Jul 31, 2014

You should do

allow(MyMod::Utils).to receive(:find_x).and_return({something: 'testing'})

Check out the doco Method stubs.

Related questions

In RSpec, using let variable inside before :all block

I have the following code inside most of my tests: describe 'index' let(:company) { FactoryGirl.create(:company) } let(:user) { FactoryGirl.create(:user, company: company) } before do sign_in user visit products_path end ... end But I'm getting the following warning: …

Read More
How to raise an exception in an RSpec test

I'm stuck on a test scenario. I have a controller method: def update @object = Object.find params[:id] # some other stuff @object.save rescue ActiveRecord::StaleObjectError # woo other stuff end The first part I test with: context '#update' let(:…

Read More
How to run a single RSpec test?

I have the following file: /spec/controllers/groups_controller_spec.rb What command in terminal do I use to run just that spec and in what directory do I run the command? My gem file: # Test ENVIRONMENT GEMS group :development, :…

Read More