discourse/spec/controllers/steps_controller_spec.rb

require 'rails_helper'

describe StepsController do

  it 'needs you to be logged in' do
    expect {
      xhr :put, :update, id: 'made-up-id', fields: { forum_title: "updated title" }
    }.to raise_error(Discourse::NotLoggedIn)
  end

  it "raises an error if you aren't an admin" do
    log_in
    xhr :put, :update, id: 'made-up-id', fields: { forum_title: "updated title" }
    expect(response).to be_forbidden
  end

  context "as an admin" do
    before do
      log_in(:admin)
    end

    it "updates properly if you are staff" do
      xhr :put, :update, id: 'contact', fields: { contact_email: "eviltrout@example.com" }
      expect(response).to be_success
      expect(SiteSetting.contact_email).to eq("eviltrout@example.com")
    end

    it "returns errors if the field has them" do
      xhr :put, :update, id: 'contact', fields: { contact_email: "not-an-email" }
      expect(response).to_not be_success
    end
  end

end