CODEWITHSUNDEEP
ruby-on-railstestingmockingmocha.js
Verdi_Michael
Verdi_Michael

Reputation: 127

stub instance with namespaced object using Mocha Rails

I am using Mocha library with test unit. https://github.com/freerange/mocha

Here is my controller action

def update_purchase_state
  current_state = @purchase.aasm_state
  @purchase.update_attribute :aasm_state, params[:purchase_state]
  flash[:notice] = "successfully update the purchase state from '#{current_state}' to '#{params[:purchase_state]}'"
  redirect_to home_admin_purchase_editor_path(purchase_id: @purchase)
end

Here is my controller test

should "update the purchase's state" do
  PurchaseEditor::Purchase.any_instance.expects(:aasm_state).returns("paid")
  PurchaseEditor::Purchase.any_instance.expects(:update_attribute)
  post :update_purchase_state, purchase_id: "1", purchase_state: "refunded"
  assert_response 200
  assert_match /successfully update the purchase state/, flash[:notice]
end

The error I am getting is undef method aasm_state for nil class. I am confused bc I thought I was mocking it out with .any_instance. I have also tried .stubs as well with no luck.

Upvotes: 0

Views: 204

Answers (1)

Peter Alfvin
Peter Alfvin

Reputation: 29429

.any_instance will work for instances of Purchase, but @purchase is not an instance of Purchase. It is nil in this case. You need to address where you assign @purchase in your controller or you need to artificially assign it yourself from the spec.

Upvotes: 1

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