Implementing Recipe Details, Part 1

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Having cleared out the first spec failures last night, I get started implementing the first scenario in the Recipe Details Cucumber story:

Feature: Recipe Details

  So that I can accurately reproduce a recipe at home
  As a web user
  I want to be able to easily recognize important details

    Scenario: Viewing a recipe with several ingredients

      Given a recipe for Buttermilk Chocolate Chip Pancakes
      When I view the recipe
      Then I should see an ingredient of "1 cup of all-purpose, unbleached flour"
      And I should see an ingredient of "¼ teaspoons salt"
      And I should see an ingredient of "chocolate chips (Nestle Tollhouse)"

Mostly following along with what I discovered in my Cucumber / Sinatra spike, I implement the Given and When steps as:

Given /^a recipe for Buttermilk Chocolate Chip Pancakes$/ do
  @date = Date.new(2009, 03, 24)
  @title = "Buttermilk Chocolate Chip Pancakes"
  @permalink = @date.to_s + "-" + @title.downcase.gsub(/\W/, '-')

  RestClient.put "#{@@db}/#{@permalink}",
    { :title => @title,
      :date  => @date }.to_json,
    :content_type => 'application/json'
end

When /^I view the recipe$/ do
  visit("/recipes/#{@permalink}")
end

The next pending step is reported as:

You can use these snippets to implement pending steps which have no step definition:

Then /^I should see an ingredient of "1 cup of all\-purpose, unbleached flour"$/ do
end

Implementing this as a simple response-should-contain:

Then /^I should see an ingredient of "(.+)"$/ do |ingredient|
  response.should contain(ingredient)
end

When this is run, I get the following error:

    Then I should see an ingredient of "1 cup of all-purpose, unbleached flour"
      expected the following element's content to include "1 cup of all-purpose, unbleached flour":
      Not Found (Spec::Expectations::ExpectationNotMetError)
      ./features/step_definitions/recipe_details.rb:17:in `Then /^I should see an ingredient of "(.+)"$/'
      features/recipe_details.feature:11:in `Then I should see an ingredient of "1 cup of all-purpose, unbleached flour"'

This simply means that the requested resource has not been defined in the Sinatra app. To get rid of the warning, define an empty resource:

get '/recipes/:permalink' do
end

Re-running the spec changes the error to:

    Then I should see an ingredient of "1 cup of all-purpose, unbleached flour"
      expected the following element's content to include "1 cup of all-purpose, unbleached flour": (Spec::Expectations::ExpectationNotMetError)
      ./features/step_definitions/recipe_details.rb:17:in `Then /^I should see an ingredient of "(.+)"$/'
      features/recipe_details.feature:11:in `Then I should see an ingredient of "1 cup of all-purpose, unbleached flour"'

We have gone from a Not Found error to an expectation not met error. Progress!

At this point, I need to move from the outside in by dropping down into RSpec. Tomorrow...