# Agouti [![Build Status](https://travis-ci.org/CWISoftware/agouti.png?branch=master)](https://travis-ci.org/CWISoftware/agouti) [![Code Climate](https://codeclimate.com/github/CWISoftware/agouti/badges/gpa.svg)](https://codeclimate.com/github/CWISoftware/agouti) [![Gem Version](https://badge.fury.io/rb/agouti.svg)](http://badge.fury.io/rb/agouti)

Gem for testing above the fold render on the first tcp round trip.

This gem is a Rack middleware that truncates the gzipped response to 14kb.

Useful for testing [critical rendering path optimization](https://developers.google.com/web/fundamentals/performance/critical-rendering-path/).

## Installation

Add this line to your application's Gemfile:

```ruby
gem 'agouti'
```

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install agouti

## Usage

To enable the middleware, it is necessary to add the following header to the request:
```
X-Agouti-Enable: 1
```

It is possible to customize the length of the content that the server will respond with the following header:
```
X-Agouti-Limit: 14000
```

### Example usage with Cucumber, Capybara and Poltergeist
```
Given /^(?:|I )navigate to '(.+)'$/ do |page_path|
  visit page_path

Given /^(?:|I )navigate to '(.+)' waiting only one tcp round trip$/ do |page_path|
  page.driver.add_header("X-Agouti-Enable", "1", permanent: false)
  visit page_path
end
```

## Contributing

1. Fork it ( https://github.com/CWISoftware/agouti/fork )
2. Create your feature branch (`git checkout -b my-new-feature`)
3. Commit your changes (`git commit -am 'Add some feature'`)
4. Push to the branch (`git push origin my-new-feature`)
5. Create a new Pull Request