Add a Rake target for running the full rails3 integration test

Rakefile

@@ -17,6 +17,18 @@ namespace :spec do
   end
 end
 
+namespace :test do
+  namespace :rails3 do
+    desc "Run an integration test with the rails3-demo code (slow)"
+    task :testunit do |t|
+      unless File.exists? File.expand_path("~/.rvm/scripts/rvm")
+        abort("I don't think you have RVM installed, which means this test will fail")
+      end
+      sh "(cd examples/rails3-demo && ./run-test.sh)"
+    end
+  end
+end
+
 
 Rake::TestTask.new(:examples) do |test|
   test.libs << 'lib' << 'examples'

examples/rails3-demo/run-test.sh

@@ -2,6 +2,14 @@
 
 RAKE="bundle exec rake"
 
+# Resetting some environment variables in case our parent is running us via
+# Rake
+export GEM_HOME=
+export GEM_PATH=
+export BUNDLE_GEMFILE=
+export BUNDLE_BIN_PATH=
+export RUBYOPT=
+
 # Make sure we load RVM into the shell properly
 source ~/.rvm/scripts/rvm
 # Make sure we load in our .rvmrc to use the right gemset