Spec your Cells.

<img src=“https://secure.travis-ci.org/apotonick/rspec-cells.png” />

This plugin allows you to test your cells easily using RSpec. Basically, it adds a cells example group with a #render_cell helper.

Cells is Rails’ popular view components framework.

This gem runs with RSpec2 and Rails >= 3.x, so just add it to your app’s Gemfile.

group :test do
  gem "rspec-cells"
end

Simply put all your specs in the spec/cells directory. However, let the cell generator do that for you!

rails g cell blog_post show -t rspec

will create an exemplary spec/cells/blog_post_cell_spec.rb for you.

In your specs you can use render_cell to assert the rendered markup (or whatever your state is supposed to do). This goes fine with Webrat matchers.

it "renders posts count" do
  render_cell(:posts, :count).should have_selector("p", :content => "4 posts!")
end

You can create a cell instance using the cell method, and then render afterwards. This is helpful when you’re planning to stub things or if you need to pass arguments to the cell constructor.

it "renders empty posts list" do
  posts = cell(:posts)
  posts.stub(:recent_posts).and_return([])

  posts.render_state(:count).should have_selector("p", :content => "No posts!")
end

After preparing the instance you can use render_state for triggering the state.

If you want Capybara’s string matchers be sure to bundle at least capybara 0.4.1 in your Gemfile.

group :development, :test do
  gem "capybara", "~> 0.4.1"
end

In order to make the cells test generator work properly, capybara needs to be in both groups.

You can then use capybara’s matchers in your cell spec.

describe PostsCell do
  describe "search posts" do
    let(:search) { render_cell(:posts, :search) }

    it "should have a search field" do
      search.should have_field("Search by Title")
    end

    it "should have a search button" do
      search.should have_button("Search")
    end
  end

  describe "latest posts" do
    subject { render_cell(:posts, :latest) }

    it { should have_css("h3.title", :text => "Latest Posts") }
    it { should have_table("latest_posts") }
    it { should have_link("View all Posts") }
    it { should_not have_button("Create Post") }
    it { should_not have_field("Search by Title") }
  end
end

You can see all capybara matchers and finders here.

Run your examples with

rake spec:cells

If you need more helpers, matchers and stuff, just let us know.

• Jorge Calás Lozano <[email protected]> (Cleanup, capybara string matchers)

Copyright © 2010, Nick Sutterer

Copyright © 2007-2009, Dmytro Shteflyuk <[email protected]> kpumuk.info

Released under the MIT License.