Add a failing test.

lib/capybara/spec/session/current_host_spec.rb

@@ -58,5 +58,11 @@ shared_examples_for "current_host" do
       @session.body.should include('Current host is http://capybara2.elabs.se')
       @session.current_host.should == 'http://capybara2.elabs.se'
     end
+
+    it "is affected by following a redirect" do
+      @session.visit('http://capybara-testapp.heroku.com/redirect_secure')
+      @session.body.should include('Current host is https://capybara-testapp.heroku.com')
+      @session.current_host.should == 'https://capybara-testapp.heroku.com'
+    end
   end
 end

lib/capybara/spec/test_app.rb

@@ -67,6 +67,10 @@ class TestApp < Sinatra::Base
     redirect back
   end
 
+  get '/redirect_secure' do
+    redirect "https://#{request.host}/host"
+  end
+
   get '/slow_response' do
     sleep 2
     'Finally!'