Class | ActionController::IntegrationTest
In: | lib/action_controller/integration.rb
Parent: | Test::Unit::TestCase

An IntegrationTest is one that spans multiple controllers and actions, tying them all together to ensure they work together as expected. It tests more completely than either unit or functional tests do, exercising the entire stack, from the dispatcher to the database.

At its simplest, you simply extend IntegrationTest and write your tests using the get/post methods:

      require "#{File.dirname(__FILE__)}/test_helper"

      class ExampleTest < ActionController::IntegrationTest
        fixtures :people

        def test_login
          # get the login page
          get "/login"
          assert_equal 200, status

          # post the login and follow through to the home page
          post "/login", :username => people(:jamis).username,
            :password => people(:jamis).password
          follow_redirect!
          assert_equal 200, status
          assert_equal "/home", path
        end
      end

However, you can also have multiple session instances open per test, and even extend those instances with assertions and methods to create a very powerful testing DSL that is specific for your application. You can even reference any named routes you happen to have defined!

      require "#{File.dirname(__FILE__)}/test_helper"

      class AdvancedTest < ActionController::IntegrationTest
        fixtures :people, :rooms

        def test_login_and_speak
          jamis, david = login(:jamis), login(:david)
          room = rooms(:office)

          jamis.enter(room)
          jamis.speak(room, "anybody home?")

          david.enter(room)
          david.speak(room, "hello!")
        end

        private

          module CustomAssertions
            def enter(room)
              # reference a named route, for maximum internal consistency!
              get(room_url(:id => room.id))
              assert(...)
              ...
            end

            def speak(room, message)
              xml_http_request "/say/#{room.id}", :message => message
              assert(...)
              ...
            end
          end

          def login(who)
            open_session do |sess|
              sess.extend(CustomAssertions)
              who = people(who)
              sess.post "/login", :username => who.username,
                :password => who.password
              assert(...)
            end
          end
      end

### Methods

method_missing open_session reset!

### Public Instance methods

method_missing(sym, *args, &block)

Delegate unhandled messages to the current session instance.

open_session() {|session if block_given?| ...}

Open a new session instance. If a block is given, the new session is yielded to the block before being returned.

      session = open_session do |sess|
        sess.extend(CustomAssertions)
      end

By default, a single session is automatically created for you, but you can use this method to open multiple sessions that ought to be tested simultaneously.

reset!()

Reset the current session. This is useful for testing multiple sessions in a single test case.

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