Run any changed specs

run_changed_specs

#!/usr/bin/env ruby

project_root = `git rev-parse --show-toplevel`.strip
git_status = `git status --porcelain --untracked-files=all`.split("\n")
changed_files = git_status.map { |line| line[3..-1] }
grouped_specs = Hash.new { |hash, key| hash[key] = [] }

changed_files.select { |file| file =~ /spec/ }.each do |spec|
  project, file = spec.split("/spec/")
  grouped_specs[project] << "spec/#{file}"
end

commands = grouped_specs.map do |project, specs|
  "'cd #{project_root}/#{project} && bundle exec rspec #{specs.join(" ")}'"
end

system("parallel -vu -j #{grouped_specs.size} ::: #{commands.join(' ')}")