just_add_watir

A. Use a ci_reporter gem …
To install the ci_reporter gem on windows:

gem install ci_reporter

If you’re using Test::Unit, ensure the ci/reporter/rake/test_unit_loader.rb file is loaded before the test is run. If you’re using RSpec, you‘ll need to pass the following arguments to the spec command:

 --require GEM_PATH/lib/ci/reporter/rake/rspec_loader
 --format CI::Reporter::RSpec

You may also want to set the output directory as demonstrated by setting the CI_REPORTS environment variable.

require 'test/unit'
require 'ci/reporter/rake/test_unit_loader.rb'
require 'watir'
ENV["CI_REPORTS"] = 'C:/temp/'