How to write controller spec for method which returns an object, but without checking for any related templates

0
votes

I would like to ask my question in more conslidated way with basic example.

1) I have UsersController
2) I have show method in it
3) But I don't have any templates for this method(either - show.html.erb/show.xml.erb etc)
4) So currently, I just wanted to write a spec for just checking whether my method is returning an object or not
5) it is working, but as it is CRUD related method, it is expecting a Template for it.
6) ActionView::MissingTemplate

I have tried in this way

it "should show the user record" do
  get :show, :id => 1
  User.should_receive(:find).at_least(:once).with(1).and_return(mock_user)
end

class UsersController
  def show
    # params = {}
    # params = {:id => 1}
    @user_obj = User.find(params[:id]) # ActiveRecord::Relation
  end
end

require 'spec_helper'

describe UsersController do
  def mock_user(stubs={})
    @mock_user ||= mock_model(User, stubs).as_null_object
  end

  it "should show the user record" do
    expect(assigns(:user_obj)).to eq(mock_user) # How to stop execution  here only.
  end
end

ActionView::MissingTemplate: Missing template users/show with {:handlers=>[:erb, :rjs, :builder, :rhtml, :rxml], :formats=>[:html], :locale=>[:en, :en]} in view paths "#"

2
ruby-on-railsrubyrspec-railsrspec3

2 Answers

0
votes

What you are trying to do doesn't seem right for me. This type of testing (controller tests is) for testing the response of action and rendering. so you shouldn't do that you should test the output of the rendering of the action. otherwise, if you wanted to test the method show only (unit testing) don't use get here you can do this 

users_controller = UsersController.new
users_controller.show

and test it as any method inside any class

0
votes

you are missing a render, so it searches for template to render.

class UsersController
  def show
    # params = {}
    # params = {:id => 1}
    @user_obj = User.find(params[:id])
    render status: 200, json: @user_obj
  end
end

Now your spec shoud work.