Runs specs based on a fuzzy match of the file path

smartspec.rb

#!/usr/bin/env ruby
require 'rubygems'
require 'thor'
require 'pry'

class SmartSpec < Thor
  option :all, type: :boolean, aliases: ['-a']
  desc 'fuzzy [PATTERN] *OR* smartspec -- [PATTERN]', 'Find specs matching PATTERN and run one or all of them.'
  long_desc <<-DESC
  This is the default action of smartspec, so:\x5
    `smartspec fuzzy 'app mod user'`\x5
  ...and:\x5
    `smartspec -- 'app mod user'`\x5
  are synonymous.

  By default, if the supplied pattern matches more than one spec, only one is chosen, and this choice is based on:\x5
    1. the length of the filename, so 'user_spec.rb' would be chosen over 'super_user_spec.rb' when both are in the same directory, and:\x5
    2. the length of the path to the file, so 'spec/models/user_spec.rb' would be chosen over 'spec/models/admin/user_spec.rb'\x5

  OPTIONS

  -a, --all: Instead of choosing a spec based on the matching rules above, run all specs that match PATTERN

  EXAMPLES

  Run `spec/models/user_spec.rb`:\x5
    `smartspec -- 'mod user'

  Run both `spec/models/user_spec.rb` and `spec/models/admin/user_spec.rb`:\x5
    `smartspec -a -- 'mod user'

  Run any spec that relates to users:\x5
    `smartspec -a -- user`
  DESC
  def fuzzy(*patterns)
    files = patterns.flat_map do |pattern|
      pattern_matches = spec_files.grep Regexp.new(pattern.gsub(" ", ".*/"))
      if options[:all]
        pattern_matches
      else
        pattern_matches.sort do |a,b|
          if File.basename(a).length == File.basename(b).length
            File.dirname(a).length <=> File.dirname(b).length
          else
            File.basename(a).length <=> File.basename(b).length
          end
        end.first
      end
    end

    cmd = "bundle exec rspec #{files.join(" ")}"
    puts cmd
    system cmd
  end
  default_task :fuzzy

  private

  def spec_files
    @spec_files ||= Dir["spec/**/*"].to_a
  end
end

SmartSpec.start(ARGV)