The nginx Rspec matcher for serverspec

nginx_matcher.rb

module NginxMatchers
  RSpec::Matchers.define :permit do |ip_addresses|
    match do |content|
      escaped_url = Regexp.escape @url
      ip_addresses.all?{ |ip_address|
        content=~/location #{escaped_url} \{[^}]+allow #{ip_address};/m
      }
    end

    chain :access_to do |url|
      @url = url
    end

    failure_message_for_should do |content|
      escaped_url = Regexp.escape @url
      missing_ip_addresses = ip_addresses.select{ |ip_address|
        (content=~/location #{escaped_url} \{[^}]+allow #{ip_address};/m).nil?
      }
      "expected Nginx to permit #{missing_ip_addresses.join(", ")} access to '#{@url}'"
    end
  end

  RSpec::Matchers.define :upstream_to do |server|
    match do |content|
      escaped_server = Regexp.escape(server)
      !(content=~/upstream #{@upstreamer} \{[^}]+server #{escaped_server};/m).nil?
    end

    chain :through do |upstreamer|
      @upstreamer = upstreamer
    end

    failure_message_for_should do |content|
      "expected Nginx to upstream to '#{server}' via '#{@upstreamer}'"
    end
  end
end