basic controller test

technologies_controller_spec.rb

require 'spec_helper'

describe TechnologiesController do
  describe "GET show" do
    let(:technology) { mock_model(Technology, id: 1) }
     
    it "shows a technology" do
     get :show, :id => 1
      response.should be_success
    end

    it "shows the technology template" do
      get :show, id: 1
      response.should render_template("show")
    end
  end
    
  it "shows a list of technologies" do
    get "index"
  end
 
end

adding

    before :each do
      Technology.stub(:find).with("1").and_return(@technology)
    end

works!