cuc_demo

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copyright 2008 Paul Cortens

see the presentations directory for more helpful documents

A basic example of TDD with Cucumber and RSpec

Steps in this document correspond to tags in my git repository

rails cuc_demo cd cuc_demo script/generate cucumber script/generate rspec

Step 0

Add the feature

Step 1

rake db:migrate rake db:test:prepare (to create db/schema.rb)

rake features or AUTOFEATURE=true autospec

add some matchers

Step 2

script/generate rspec_model Postie name:string body:text rake db:migrate db:test:prepare rake features

Step 3

Need to require webrat (so we get the nice stuff like visits '/')

Step 4

Set up a root route (it doesn't load the static page) script/generate rspec_controller Posties new create show in routes.rb map.resources :posties map.root :controller => 'posties', :action => 'new'

Step 5

describe PostiesController do describe "GET 'new'" do it "should assign a new postie to the view" do

make it pass

Step 6

add the new postie form to app/views/posties/new.html.erb

remove view specs

• I will let cucumber test the views

Step 7

still fails - Webrat uses label (i.e. what the customer sees) update form to have 'nice' labels

Step 8

We forgot the button Update feature Update view

Step 9

Implement create action

Rails has the singular of posties as posty inflect.irregular 'postie', 'posties'

describe PostiesController do describe "POST 'create'" do describe "with valid attributes" do it "should redirect to the show pastie page" do

This feature doesn't have the negative, so I didn't implement it

Step 10 Note how cucumber is rendering Posties#show now (instead of Posties#create)

add our fields to app/views/pasties/show.html.erb

describe PostiesController do describe "GET 'show'" do it "should assign a the postie to the view" do

Step 11

Need to fix our routes I also did some messing around with the model to get the pretty urls

Step 12

Bug in my routes. I was using PUT instead of POST (for create)

Step 13

A few more bugs with the params Need to have Postie#to_params use the pretty_id

Step 14

git rm public/index.html

Step 15

Fire up the browser (for the first time)

Add more examples to the feature

Step 16

They fail because my code escapes the HTML, but the matchers don't.

Step 17

That's it :)