monkeys_controller_spec.rb

require 'spec_helper'

describe MonkeysController do

  def mock_monkey(stubs={})
    @mock_monkey ||= mock_model(Monkey, stubs).as_null_object
  end

  describe "GET index" do
    it "assigns all monkeys as @monkeys" do
      Monkey.stub(:all) { [mock_monkey] }
      get :index
      assigns(:monkeys).should eq([mock_monkey])
    end
  end

  describe "GET show" do
    it "assigns the requested monkey as @monkey" do
      Monkey.stub(:find).with("37") { mock_monkey }
      get :show, :id => "37"
      assigns(:monkey).should be(mock_monkey)
    end
  end

  describe "GET new" do
    it "assigns a new monkey as @monkey" do
      Monkey.stub(:new) { mock_monkey }
      get :new
      assigns(:monkey).should be(mock_monkey)
    end
  end

  describe "GET edit" do
    it "assigns the requested monkey as @monkey" do
      Monkey.stub(:find).with("37") { mock_monkey }
      get :edit, :id => "37"
      assigns(:monkey).should be(mock_monkey)
    end
  end

  describe "POST create" do

    describe "with valid params" do
      it "assigns a newly created monkey as @monkey" do
        Monkey.stub(:new).with({'these' => 'params'}) { mock_monkey(:save => true) }
        post :create, :monkey => {'these' => 'params'}
        assigns(:monkey).should be(mock_monkey)
      end

      it "redirects to the created monkey" do
        Monkey.stub(:new) { mock_monkey(:save => true) }
        post :create, :monkey => {}
        response.should redirect_to(monkey_url(mock_monkey))
      end
    end

    describe "with invalid params" do
      it "assigns a newly created but unsaved monkey as @monkey" do
        Monkey.stub(:new).with({'these' => 'params'}) { mock_monkey(:save => false) }
        post :create, :monkey => {'these' => 'params'}
        assigns(:monkey).should be(mock_monkey)
      end

      it "re-renders the 'new' template" do
        Monkey.stub(:new) { mock_monkey(:save => false) }
        post :create, :monkey => {}
        response.should render_template(:new)
      end
    end

  end

  describe "PUT update" do

    describe "with valid params" do
      it "updates the requested monkey" do
        Monkey.should_receive(:find).with("37") { mock_monkey }
        mock_monkey.should_receive(:update_attributes).with({'these' => 'params'})
        put :update, :id => "37", :monkey => {'these' => 'params'}
      end

      it "assigns the requested monkey as @monkey" do
        Monkey.stub(:find) { mock_monkey(:update_attributes => true) }
        put :update, :id => "1"
        assigns(:monkey).should be(mock_monkey)
      end

      it "redirects to the monkey" do
        Monkey.stub(:find) { mock_monkey(:update_attributes => true) }
        put :update, :id => "1"
        response.should redirect_to(monkey_url(mock_monkey))
      end
    end

    describe "with invalid params" do
      it "assigns the monkey as @monkey" do
        Monkey.stub(:find) { mock_monkey(:update_attributes => false) }
        put :update, :id => "1"
        assigns(:monkey).should be(mock_monkey)
      end

      it "re-renders the 'edit' template" do
        Monkey.stub(:find) { mock_monkey(:update_attributes => false) }
        put :update, :id => "1"
        response.should render_template(:edit)
      end
    end

  end

  describe "DELETE destroy" do
    it "destroys the requested monkey" do
      Monkey.should_receive(:find).with("37") { mock_monkey }
      mock_monkey.should_receive(:destroy)
      delete :destroy, :id => "37"
    end

    it "redirects to the monkeys list" do
      Monkey.stub(:find) { mock_monkey(:destroy => true) }
      delete :destroy, :id => "1"
      response.should redirect_to(monkeys_url)
    end
  end

end