Implement tracks/{show,listen}

app/controllers/tracks_controller.rb

@@ -0,0 +1,8 @@
+class TracksController < ApplicationController
+  def show
+    @track = Track.find params[:id]
+  end
+
+  def stream
+  end
+end

app/models/track.rb

@@ -0,0 +1,3 @@
+class Track < ActiveRecord::Base
+  validates_presence_of :name
+end

app/views/tracks/show.html.haml

@@ -0,0 +1,3 @@
+%h1= @track.name
+%audio{:src => stream_track_path(@track)}
+  Your browser does not support the audio element

config/routes.rb

@@ -1,3 +1,6 @@
 Scube::Application.routes.draw do
+  resources :tracks do
+    get 'stream', :on => :member
+  end
   resources :playlists
 end

db/migrate/20110713182005_create_tracks.rb

@@ -0,0 +1,13 @@
+class CreateTracks < ActiveRecord::Migration
+  def self.up
+    create_table :tracks do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :tracks
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20110711195337) do
+ActiveRecord::Schema.define(:version => 20110713182005) do
 
   create_table "playlists", :force => true do |t|
     t.string   "name"
@@ -18,4 +18,10 @@ ActiveRecord::Schema.define(:version => 20110711195337) do
     t.datetime "updated_at"
   end
 
+  create_table "tracks", :force => true do |t|
+    t.string   "name"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
 end

features/step_definitions/tracks_step.rb

@@ -0,0 +1,11 @@
+Given /^a track named "([^"]*)"$/ do |name|
+  @track = Track.create!(:name => name)
+end
+
+Then /^I should see an audio player$/ do
+  page.should have_xpath '//audio'
+end
+
+Then /^it should provide an audio stream for "([^"]*)"$/ do |name|
+  page.should have_xpath "//audio[@src='#{stream_track_path(@track)}']"
+end

features/support/paths.rb

@@ -1,31 +1,19 @@
 module NavigationHelpers
-  # Maps a name to a path. Used by the
-  #
-  #   When /^I go to (.+)$/ do |page_name|
-  #
-  # step definition in web_steps.rb
-  #
   def path_to(page_name)
     case page_name
-
-    when /^the home\s?page$/
-      '/'
-
-    # Add more mappings here.
-    # Here is an example that pulls values out of the Regexp:
-    #
-    #   when /^(.*)'s profile page$/i
-    #     user_profile_path(User.find_by_login($1))
-
-    else
-      begin
-        page_name =~ /^the (.*) page$/
-        path_components = $1.split(/\s+/)
-        self.send(path_components.push('path').join('_').to_sym)
-      rescue NoMethodError, ArgumentError
-        raise "Can't find mapping from \"#{page_name}\" to a path.\n" +
-          "Now, go and add a mapping in #{__FILE__}"
-      end
+      when /^the home\s?page$/
+        '/'
+      when /^the track page for "([^\"]*)"$/
+        track_path Track.find_by_name($1)
+      else
+        begin
+          page_name =~ /^the (.*) page$/
+          path_components = $1.split(/\s+/)
+          self.send(path_components.push('path').join('_').to_sym)
+        rescue NoMethodError, ArgumentError
+          raise "Can't find mapping from \"#{page_name}\" to a path.\n" +
+            "Now, go and add a mapping in #{__FILE__}"
+        end
     end
   end
 end

features/tracks.feature

@@ -0,0 +1,16 @@
+Feature: Tracks
+
+  So that I can listen music
+  As a listener
+  I want to add, manage and listen some tracks
+
+  Scenario: Show track
+    Given a track named "Mega song"
+    When I go to the track page for "Mega song"
+    Then I should see "Mega song" within "h1"
+
+  Scenario: Listen track
+    Given a track named "Mega song"
+    When I go to the track page for "Mega song"
+    Then I should see an audio player
+    And it should provide an audio stream for "Mega song"

spec/controllers/tracks_controller_spec.rb

@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe TracksController do
+  def valid_attributes
+    {
+      :name => 'Mega song'
+    }
+  end
+
+  describe 'GET show' do
+    it 'assigns the requested track as @track' do
+      track = Track.create! valid_attributes
+      get :show, :id => track.id.to_s
+      assigns[:track].should == track
+    end
+  end
+end

spec/models/track_spec.rb

@@ -0,0 +1,18 @@
+require 'spec_helper'
+
+describe Track do
+  subject { track }
+  let(:track) { Track.new :name => 'Mega song' }
+
+  context 'with valid attributes' do
+    it { should be_valid }
+  end
+
+  context 'when name empty' do
+    before do
+      track.name = ''
+    end
+
+    it { should_not be_valid }
+  end
+end

spec/views/tracks/show.html.haml_spec.rb

@@ -0,0 +1,30 @@
+require 'spec_helper'
+
+describe 'tracks/show.html.haml' do
+  let(:track) do
+    mock_model('Track', :name => 'Mega song')
+  end
+
+  before do
+    assign :track, track
+  end
+
+  it 'displays the name of the track' do
+    render
+    rendered.should have_selector('h1', :text => 'Mega song')
+  end
+
+  context 'audio tag' do
+    it 'provides an audio stream for the track' do
+      render
+      rendered.should have_selector('audio[src]')
+    end
+
+    it 'displays a text fallback for UA without support' do
+      render
+      rendered.should have_selector('audio',
+        :text => 'Your browser does not support the audio element'
+      )
+    end
+  end
+end