Question

I’m trying to spec a module by including it in a basic mock_model object. However, when I call the instance method defined in the module ActiveRecord tries to establish a connection with the database.

The module:

module Stuff
    module SoftDelete
        extend ActiveSupport::Concern

        def soft_delete
            puts "Called here"
        end
    end
end

The Spec:

describe Stuff::SoftDelete do
    class Network < ActiveRecord::Base
        include Stuff::SoftDelete
        attr_accessor :deleted_at
    end

    before (:each) do
        @network = mock_model(Network)
    end

    context "When a record is deleted" do
        it "is marked as deleted" do
            @network.soft_delete
        end
    end
end

When I run this Spec, the following error occurs:

  1) Stuff::SoftDelete When a record is deleted is marked as deleted
     Failure/Error: @network.soft_delete
     ActiveRecord::ConnectionNotEstablished:
       ActiveRecord::ConnectionNotEstablished
     # ./spec/apoc/soft_delete_spec.rb:18:in `block (3 levels) in <top (required)>'

Note: If I include the SoftDelete module in a real ActiveRecord class, it will work. It just seems that mock_model isn’t able to deal with the module.

Would love some help on this one.
Thanks!

Answer 1

Do you trust ActiveRecord? If so, don’t inherit from it; test your module in isolation. If your module includes calls ActiveRecord methods, stub them and test only your code.