Don't Program RSS by Coincidence

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Up tonight is the RSS recipes feed. For the most part, the inside, RSpec driven work is the same as that for meals RSS feed.

I do need to create a new, recipes by-date CouchDB view:

  recipes_view = <<_JS
{
  "views": {
    "by_date": {
      "map": "function (doc) {
        if (typeof(doc['preparations']) != 'undefined') {
          emit(doc['date'], [doc['_id'], doc['title']]);
        }
      }"
    },
  },
  "language": "javascript"
}
_JS

  RestClient.put "#{@@db}/_design/recipes",
    recipes_view,
    :content_type => 'application/json'

That gets consumed by the Sinatra application:

  url = "#{@@db}/_design/recipes/_view/by_date?limit=10&descending=true"
  data = RestClient.get url
  @recipe_view = JSON.parse(data)['rows']

As with the meals RSS feed, I use the results of the CouchDB view to build the recipes RSS feed with RSS::Maker.

With the inside work complete, I can move back out to the Cucumber scenario:

Feature: RSS

  So that I tell my user when there are updates to this great cooking site
  As an RSS bot
  I want to be able to consume your RSS

  Scenario: Recipe RSS

    Given 20 delicious, easy to prepare recipes
    When I access the recipe RSS feed
    Then I should see the 10 most recent recipes
    And I should see the summary of each recipe

The first step is a re-used, earlier defined step. I can define the next two steps with:

When /^I access the recipe RSS feed$/ do
  visit('/recipes.rss')
  response.should be_ok
end

Then /^I should see the 10 most recent recipes$/ do
  response.
    should have_selector("channel > item > title",
                         :count => 10)
  response.
    should have_selector("channel > item > title",
                         :content => "delicious, easy to prepare")
end

When I get to the last step, I realize that I will have to either choose a different first step or define a new one. The last step calls for recipes summaries, but the "Given 20 delicious, easy to prepare recipes" step does not define them.

I will determine what to do with that first step tomorrow. I may also want to refactor a little.