``` bash
git clone --recursive https://github.com/Nerian/akephalos2
```
The HTMLUnit files are located at [https://github.com/Nerian/html-unit-vendor](https://github.com/Nerian/html-unit-vendor) and are automatically downloaded as a submodule.
Also, we have a .rvmrc file already cooked:
``` bash
cp .rvmrc.example .rvmrc
```
## Setup
Configuring akephalos is as simple as requiring it and setting Capybara's
javascript driver:
``` ruby
require 'akephalos'
Capybara.javascript_driver = :akephalos
```
## Basic Usage
Akephalos provides a driver for Capybara, so using Akephalos is no
different than using Selenium or Rack::Test. For a full usage guide, check
out Capybara's DSL [documentation](http://github.com/jnicklas/capybara). It
makes no assumptions about the testing framework being used, and works with
RSpec, Cucumber, and Test::Unit.
Here's some sample RSpec code:
``` ruby
describe "Home Page" do
before { visit "/" }
context "searching" do
before do
fill_in "Search", :with => "akephalos"
click_button "Go"
end
it "returns results" { page.should have_css("#results") }
it "includes the search term" { page.should have_content("akephalos") }
end
end
```
Capybara allows you to perform your action on a context, for example inside a div or a frame. With Akephalos you can select the frame either by id or by index.
``` html
Test
Test2
Test3
``` You can operate within the context of iframe `test2` with any of these calls: ``` ruby # By ID within_frame("test2") do .... end # By index within_frame(1) do .... end ``` ## Configuration There are now a few configuration options available through Capybara's new `register_driver` API. ### Configuring the max memory that Java Virtual Machine can use The max memory that the JVM is going to use can be set using an environment variable in your spec_helper or .bashrc file. ``` ruby ENV['akephalos_jvm_max_memory'] ``` The default value is 128 MB. If you use akephalos's bin the parameter `-m [memory]` sets the max memory for the JVM. ``` bash $ akephalos -m 670 ``` ### Using a different browser HtmlUnit supports a few browser implementations, and you can choose which browser you would like to use through Akephalos. By default, Akephalos uses Firefox 3.6. ``` ruby Capybara.register_driver :akephalos do |app| # available options: # :ie6, :ie7, :ie8, :firefox_3_6 Capybara::Driver::Akephalos.new(app, :browser => :ie8) end ``` ### Using a Proxy Server ``` ruby Capybara.register_driver :akephalos do |app| Capybara::Driver::Akephalos.new(app, :http_proxy => 'myproxy.com', :http_proxy_port => 8080) end ``` ### Ignoring javascript errors By default HtmlUnit (and Akephalos) will raise an exception when an error is encountered in javascript files. This is generally desirable, except that certain libraries aren't supported by HtmlUnit. If possible, it's best to keep the default behaviour, and use Filters (see below) to mock offending libraries. If needed, however, you can configure Akephalos to ignore javascript errors. ``` ruby Capybara.register_driver :akephalos do |app| Capybara::Driver::Akephalos.new(app, :validate_scripts => false) end ``` ### Setting the HtmlUnit log level By default it uses the 'fatal' level. You can change that like this: ``` ruby Capybara.register_driver :akephalos do |app| # available options # "trace", "debug", "info", "warn", "error", or "fatal" Capybara::Driver::Akephalos.new(app, :htmlunit_log_level => 'fatal') end ``` ### Running Akephalos with Spork ``` ruby Spork.prefork do ... Akephalos::RemoteClient.manager end Spork.each_run do ... Thread.current['DRb'] = { 'server' => DRb::DRbServer.new } end ``` More info at : [sporking-with-akephalos](http://spacevatican.org/2011/7/3/sporking-with-akephalos) ### Filters Akephalos allows you to filter requests originating from the browser and return mock responses. This will let you easily filter requests for external resources when running your tests, such as Facebook's API and Google Analytics. Configuring filters in Akephalos should be familiar to anyone who has used FakeWeb or a similar library. The simplest filter requires only an HTTP method (:get, :post, :put, :delete, :any) and a string or regex to match against. ``` ruby Akephalos.filter(:get, "http://www.google.com") Akephalos.filter(:any, %r{^http://(api\.)?twitter\.com/.*$}) ``` By default, all filtered requests will return an empty body with a 200 status code. You can change this by passing additional options to your filter call. ``` ruby Akephalos.filter(:get, "http://google.com/missing", :status => 404, :body => "...