# encoding: utf-8
require 'spec_helper'
require 'stringio'

def capture(*streams)
  streams.map! { |stream| stream.to_s }
  begin
    result = StringIO.new
    streams.each { |stream| eval "$#{stream} = result" }
    yield
  ensure
    streams.each { |stream| eval("$#{stream} = #{stream.upcase}") }
  end
  result.string
end

describe Capybara::Driver::RackTest do
  before do
    @driver = TestSessions::RackTest.driver
  end

  it "should throw an error when no rack app is given" do
    running do
      Capybara::Driver::RackTest.new(nil)
    end.should raise_error(ArgumentError)
  end

  if '1.9'.respond_to?(:encode)
    describe "with non-binary parameters" do

      it "should convert attribute values to binary" do
        output = capture(:stderr) {
          @driver.visit('/mypage', :param => 'µ')
        }.should_not =~ %r{warning: regexp match /.../n against to UTF-8 string}
      end

      it "should convert attribute with Array to binary" do
        output = capture(:stderr) {
          @driver.visit('/mypage', :param => ['µ'])
        }.should_not =~ %r{warning: regexp match /.../n against to UTF-8 string}
      end

      it "should convert path to binary" do
        output = capture(:stderr) {
          @driver.visit('/mypage'.encode('utf-8'))
        }.should_not =~ %r{warning: regexp match /.../n against to UTF-8 string}
      end
    end
  end

  it_should_behave_like "driver"
  it_should_behave_like "driver with header support"
  it_should_behave_like "driver with status code support"
  it_should_behave_like "driver with cookies support"
  it_should_behave_like "driver with infinite redirect detection"

  describe '#reset!' do
    it { @driver.visit('/foo'); lambda { @driver.reset! }.should change(@driver, :current_url).to('') }

    it 'should reset headers' do
      @driver.header('FOO', 'BAR')
      @driver.visit('/get_header')
      @driver.body.should include('BAR')

      @driver.reset!
      @driver.visit('/get_header')
      @driver.body.should_not include('BAR')
    end

    it 'should reset response' do
      @driver.visit('/foo')
      lambda { @driver.response }.should_not raise_error
      @driver.reset!
      lambda { @driver.response }.should raise_error
    end

    it 'should request response' do
      @driver.visit('/foo')
      lambda { @driver.request }.should_not raise_error
      @driver.reset!
      lambda { @driver.request }.should raise_error
    end
  end
end