Add two-way conversation feature

features/chat.feature

@@ -4,11 +4,25 @@ Feature: Chat
   As a User
   I want to have a conversation online
 
-  Background: Signed in
-    Given I am on the homepage
-    And I have signed in as "Steve"
-
   Scenario: Chatting to myself
+    Given I am signed in as "Steve"
     When I fill in "Message" with "Hello?"
     And I press "Send"
-    Then I should see "Hello?" within the chat log
+    Then I should see "Hello?" within the chat log
+
+  Scenario: Two-way conversation
+    Given I have a browser with "Ashley" signed in
+    And I switch browsers to "Steve"
+    And I am signed in as "Steve"
+
+    When I say "Hello Ashley"
+
+    When I switch browsers to "Ashley"
+    Then I should see "Hi Ashley"
+    Then I should see "Hello Ashley"
+
+    When I say "Yo"
+    And I switch browsers to "Steve"
+
+    Then I should see "Steve"
+    Then I should see "Yo"

features/identity.feature

@@ -13,7 +13,7 @@ Feature: Identity
     And I should see "Sign out"
 
   Scenario: Sign out
-    Given I have signed in as "Steve"
+    Given I am signed in as "Steve"
     When I follow "Sign out"
     Then I should see "Sign in"
     And I should not see "Steve"

features/step_definitions/chat_steps.rb

@@ -0,0 +1,4 @@
+When /^I say "([^"]*)"$/ do |message|
+  fill_in "Message", :with => message
+  click_button "Send"
+end

features/step_definitions/identity_steps.rb

@@ -1,4 +1,5 @@
-Given /^I have signed in as "([^"]*)"$/ do |name|
+Given /^I am signed in as "([^"]*)"$/ do |name|
+  visit "/sign_in"
   fill_in "Name", :with => name
   click_button "Go"
 end

features/step_definitions/session_steps.rb

@@ -0,0 +1,8 @@
+Given /^I have a browser with "([^"]*)" signed in$/ do |name|
+  switch_session(name)
+  And %{I am signed in as "#{name}"}
+end
+
+When /^I switch browsers to "([^"]*)"$/ do |name|
+  switch_session(name)
+end

features/support/sessions.rb

@@ -0,0 +1,28 @@
+# Author: Eric Pierce
+# http://www.automation-excellence.com/blog/racking-my-brains
+module Capybara
+  module Driver
+    module Sessions
+      def set_session(id)
+        Capybara.instance_variable_set('@session_pool', {
+         "#{Capybara.current_driver}#{Capybara.app.object_id}" => $sessions[id]
+        })
+      end
+
+      def switch_session(id)
+        $sessions ||= {}
+        $sessions[:default] ||= Capybara.current_session
+        $sessions[id]       ||= Capybara::Session.new(Capybara.current_driver, Capybara.app)
+        set_session(id)
+      end
+
+      def in_session(id, &block)
+        switch_session(id)
+        yield
+        set_session(:default)
+      end
+    end
+  end
+end
+
+World(Capybara::Driver::Sessions)