Usage

In your specs.watchr file just add:

@specs_watchr ||= Rspec::Rails::Watchr.new(self)

Then launch watchr as usual (probably bundle exec watchr).

Instructions

The normal behavior is similar to autotest --fast-start --no-full-after-failed but gives the user a bit more control over execution. By hitting CTRL+C (or CMD+. on OSX) you get the following prompt:

^C (Interrupted with CTRL+C)
--- What to do now? (q=quit, a=all-specs, r=reload):

Advanced

If you want to override some path matching:

@specs_watchr ||= Rspec::Rails::Watchr.new(self) do |path, specs|
  case path
  when %r{lib/calibration_with_coefficients}
    specs.grep(%r{models/(logarithmic|polynomial)_calibration})
  when %r{app/models/telemetry_parameter}
    specs.grep(%r{models/telemetry_parameter})
  end
end