# encoding: utf-8
require 'spec_helper'

describe ProxyPac::PACEngine do
  let(:valid_pac_file) do <<-EOS.strip_heredoc
                           function FindProxyForURL(url, host) {
                             return "DIRECT"
                           }
  EOS
  end

  let(:client_ip_pac) do <<-EOS.strip_heredoc
      function FindProxyForURL(url, host) {
        if ( MyIpAddress() == '127.0.0.2' ) {
          return "DIRECT";
        } else {
          return "PROXY localhost:8080";
        }
      }
  EOS
  end

  context '#find' do
    it 'returns a result' do
      file = double('PacFile')
      expect(file).to receive(:content).and_return(valid_pac_file)

      parser = ProxyPac::PACEngine.new(file: file)
      result = parser.find(Addressable::URI.parse('http://example.org'))
      expect(result).to eq('DIRECT')
    end

    it 'makes use of an environment' do
      file = double('PacFile')
      expect(file).to receive(:content).and_return(client_ip_pac)

      parser = ProxyPac::PACEngine.new(file: file, env: { client_ip: '127.0.0.1'})
      result = parser.find(Addressable::URI.parse('http://example.org'))
      expect(result).to eq('PROXY localhost:8080')
    end

    it 'raises an error if pac file is invalid' do
      file = double('PacFile')
      allow(file).to receive(:content).and_return('asdfasdf()')

      parser = ProxyPac::PACEngine.new(file: file)

      expect do
        silence(:stderr) do
          parser.find(Addressable::URI.parse('http://example.org'))
        end
      end.to raise_error Exceptions::PacFileInvalid
    end
  end
end