More specs for home controller

app/controllers/home_controller.rb

@@ -1,7 +1,8 @@
 class HomeController < ApplicationController
   def show
     offset = (Asciicast.featured.count * rand).to_i
-    asciicast = Asciicast.featured.offset(offset).first || @asciicasts.first
+    asciicast = Asciicast.featured.offset(offset).first ||
+                Asciicast.order("created_at DESC").first
     @asciicast = AsciicastDecorator.new(asciicast)
   end
 end

spec/controllers/home_controller_spec.rb

@@ -3,9 +3,33 @@ require 'spec_helper'
 describe HomeController do
 
   describe "GET 'show'" do
-    it "returns http success" do
-      get 'show'
-      response.should be_success
+    describe 'when there is at least one featured cast' do
+      before do
+        Factory(:asciicast, :featured => true)
+      end
+
+      it "returns http success" do
+        get 'show'
+        response.should be_success
+      end
+    end
+
+    describe 'when there is no featured cast but any cast exists' do
+      before do
+        Factory(:asciicast, :featured => false)
+      end
+
+      it "returns http success" do
+        get 'show'
+        response.should be_success
+      end
+    end
+
+    describe 'when there are no casts at all' do
+      it "returns http success" do
+        get 'show'
+        response.should be_success
+      end
     end
   end