Extract common setup into spec_helper, add given_castle helper.

spec/spec_helper.rb

@@ -5,15 +5,28 @@ require 'rspec'
 require 'rspec/autorun'
 require 'construct'
 
-Rspec.configure do |config|
+RSpec.configure do |config|
   config.include Construct::Helpers
 
   config.before do
     @user_dir = create_construct
     ENV['HOME'] = @user_dir.to_s
+
+    @repos_dir = @user_dir.directory(".homesick/repos")
+    homesick.stub!(:repos_dir).and_return(@repos_dir)
   end
 
   config.after do
     @user_dir.destroy!
   end
+
+  def given_castle(name, path=name)
+    @repos_dir.directory(path) do |castle|
+      Dir.chdir(castle) do
+        system "git init >/dev/null 2>&1"
+        system "git remote add origin git://github.com/technicalpickles/#{name}.git >/dev/null 2>&1"
+        return castle.directory("home")
+      end
+    end
+  end
 end