Add Watchexec watcher as default when installed on machine

  * Revert to Bundler 2.3.27
  * Create --exts and Delete --ext option
    We allow to pass a list of extensions instead of a regex and build the regex
    from the options instead of the user. This is simpler and easier for the user.
  * Display watcher used
  * Switch Listen to Wrapper Watcher::Default
  * Override watchexec with default watcher on CI
  * Allow VersionControl.files to take file extensions
  * Default to watchexec when installed
  * Remove .puts (for now)

Gemfile.lock

@@ -48,4 +48,4 @@ DEPENDENCIES
   retest!
 
 BUNDLED WITH
-   2.4.21
+   2.3.27

bin/test/watchexec-ruby-app

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash
+
+bundle install
+bundle exec rake build
+cp -R features/support features/watchexec-ruby-app/retest
+ls -t pkg | head -n1 | xargs -I {} mv pkg/{} features/watchexec-ruby-app/retest.gem
+docker compose -f features/watchexec-ruby-app/docker-compose.yml up --build --exit-code-from retest

exe/retest

@@ -5,7 +5,7 @@ require 'retest'
 $stdout.sync = true
 listen_rd, listen_wr = IO.pipe
 Signal.trap(:INT) do
-  $stdout.puts "Goodbye"
+  puts "Goodbye"
   listen_rd.close
   listen_wr.close
   exit
@@ -14,12 +14,12 @@ end
 options = Retest::Options.new(ARGV)
 
 if options.help?
-  $stdout.puts options.help
+  puts options.help
   return
 end
 
 if options.version?
-  $stdout.puts Retest::VERSION
+  puts Retest::VERSION
   return
 end
 
@@ -28,6 +28,7 @@ repository = Retest::Repository.new(files: Retest::VersionControl.files, prompt:
 command    = Retest::Command.for_options(options)
 runner     = Retest::Runner.new(command)
 sounds     = Retest::Sounds.for(options)
+watcher    = Retest::Watcher.for(options.watcher)
 
 sounds.play(:start)
 runner.add_observer(sounds)
@@ -43,25 +44,31 @@ if options.params[:diff]
   return
 end
 
+if watcher == Retest::Watcher::Watchexec
+  puts "Watcher: [WATCHEXEC]"
+else Retest::Watcher::Default
+  puts "Watcher: [LISTEN]"
+end
+
 launching_message = "Launching Retest..."
 if options.force_polling?
   launching_message = "Launching Retest with polling method..."
 end
 
 # Main action
 
-$stdout.puts launching_message
-Retest.listen(options) do |modified, added, removed|
+puts launching_message
+Retest.listen(options, listener: watcher) do |modified, added, removed|
   begin
     repository.sync(added: added, removed: removed)
     runner.sync(added: added, removed: removed)
 
     listen_wr.puts "file changed: #{(modified + added).first}"
   rescue => e
-    $stdout.puts "Something went wrong: #{e.message}"
+    puts "Something went wrong: #{e.message}"
   end
 end
-$stdout.puts "Ready to refactor! You can make file changes now"
+puts "Ready to refactor! You can make file changes now"
 
 def run_command(input:, program:)
   program.clear_terminal

features/hanami-app/retest/retest_test.rb

@@ -71,6 +71,7 @@ def test_with_no_command
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RAKE]. Using command: 'bundle exec rake test TEST=<test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT
@@ -81,6 +82,7 @@ def test_with_no_command_all
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RAKE]. Using command: 'bundle exec rake test'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/rails-app/retest/retest_test.rb

@@ -71,6 +71,7 @@ def test_with_no_command
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RAILS]. Using command: 'bin/rails test <test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT
@@ -81,6 +82,7 @@ def test_with_no_command_all
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RAILS]. Using command: 'bin/rails test'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/rspec-rails/retest/retest_test.rb

@@ -71,6 +71,7 @@ def test_with_no_command
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RSPEC]. Using command: 'bundle exec rspec <test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT
@@ -81,6 +82,7 @@ def test_with_no_command_all
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RSPEC]. Using command: 'bundle exec rspec'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/rspec-ruby/retest/retest_test/flags_test.rb

@@ -11,6 +11,7 @@ def test_with_no_command
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RSPEC]. Using command: 'bundle exec rspec <test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/ruby-app/retest/retest_test/flags_test.rb

@@ -11,6 +11,7 @@ def test_with_no_command
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RUBY]. Using command: 'bundle exec ruby <test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/ruby-bare/retest/scenarios/auto_flag.rb

@@ -8,6 +8,7 @@ def test_start_retest
 
     assert_match <<~OUTPUT, @output.read
       Setup identified: [RUBY]. Using command: 'ruby <test>'
+      Watcher: [LISTEN]
       Launching Retest...
       Ready to refactor! You can make file changes now
     OUTPUT

features/ruby-bare/retest/scenarios/custom_extensions.rb

@@ -1,6 +1,6 @@
 class CustomExtensionTest < Minitest::Test
   def setup
-    @command = %Q{retest "echo 'I captured a change'" --ext="\\.txt$"}
+    @command = %Q{retest "echo 'I captured a change'" --exts="txt"}
   end
 
   def teardown

features/watchexec-ruby-app/.gitignore

@@ -0,0 +1,3 @@
+.ruby-version
+retest.gem
+/tmp/*

features/watchexec-ruby-app/Dockerfile

@@ -0,0 +1,32 @@
+FROM ruby:2.5.9-alpine3.13
+
+ARG BUILD_PACKAGES="build-base git"
+
+RUN apk update && \
+    apk upgrade && \
+    apk add --update --no-cache $BUILD_PACKAGES && \
+    rm -rf /var/cache/apk/*
+
+# throw errors if Gemfile has been modified since Gemfile.lock
+RUN bundle config --global frozen 1
+
+WORKDIR /usr/src/app
+
+ENV LANG C.UTF-8
+ENV BUNDLER_VERSION 2.1
+
+ENV GEM_HOME="/usr/local/bundle"
+ENV PATH $GEM_HOME/bin:$GEM_HOME/gems/bin:$PATH
+
+COPY watchexec /usr/bin/
+
+COPY Gemfile Gemfile.lock retest.gem ./
+RUN gem update --system 3.2.3
+RUN gem install bundler -v 2.1.4
+RUN bundle config --delete frozen
+RUN bundle install
+RUN gem install retest.gem
+
+COPY . /usr/src/app
+
+CMD ["retest", "--ruby"]

features/watchexec-ruby-app/Gemfile

@@ -0,0 +1,3 @@
+source 'https://rubygems.org'
+gem 'minitest', '~> 5.4'
+gem 'byebug'

features/watchexec-ruby-app/Gemfile.lock

@@ -0,0 +1,15 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    byebug (11.1.3)
+    minitest (5.14.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  byebug
+  minitest (~> 5.4)
+
+BUNDLED WITH
+   2.4.21

features/watchexec-ruby-app/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Alexandre Barret
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

features/watchexec-ruby-app/README.md

@@ -0,0 +1,23 @@
+# 99 Bottles
+
+## Installing Ruby
+
+### Windows
+
+There's an installer, it's easy.
+http://rubyinstaller.org/
+
+### Mac
+
+Newer macs ship with a usable version of Ruby.
+
+Try `ruby -v` in a terminal window, and if it's 1.9.x or 2.x you're fine.
+
+http://www.railstutorial.org/book/beginning#sec-install_ruby
+http://tutorials.jumpstartlab.com/topics/environment/environment.html
+http://docs.railsbridge.org/installfest/macintosh
+
+### Linux
+
+Ubuntu: http://docs.railsbridge.org/installfest/linux
+https://www.ruby-lang.org/en/installation/

features/watchexec-ruby-app/docker-compose.yml

@@ -0,0 +1,9 @@
+services:
+  retest:
+    build: .
+    volumes:
+      - .:/usr/src/app
+    environment:
+      - DEFAULT_SLEEP_SECONDS=1
+      - LAUNCH_SLEEP_SECONDS=1.5
+    command: ruby retest/retest_test.rb

features/watchexec-ruby-app/lib/bottles.rb

@@ -0,0 +1,119 @@
+class CountdownSong
+  attr_reader :verse_template, :max, :min
+
+  def initialize(verse_template:, max: 999999, min: 0)
+    @verse_template = verse_template
+    @max, @min = max, min
+  end
+
+  def song
+    verses(max, min)
+  end
+
+  def verses(upper, lower)
+    upper.downto(lower).collect {|i| verse(i)}.join("\n")
+  end
+
+  def verse(number)
+    verse_template.lyrics(number)
+  end
+end
+
+
+class BottleVerse
+  def self.lyrics(number)
+    new(BottleNumber.for(number)).lyrics
+  end
+
+  attr_reader :bottle_number
+
+  def initialize(bottle_number)
+    @bottle_number = bottle_number
+  end
+
+  def lyrics
+    "#{bottle_number} of beer on the wall, ".capitalize +
+    "#{bottle_number} of beer.\n" +
+    "#{bottle_number.action}, " +
+    "#{bottle_number.successor} of beer on the wall.\n"
+  end
+end
+
+
+class BottleNumber
+  def self.for(number)
+    case number
+    when 0
+      BottleNumber0
+    when 1
+      BottleNumber1
+    when 6
+      BottleNumber6
+    else
+      BottleNumber
+    end.new(number)
+  end
+
+  attr_reader :number
+  def initialize(number)
+    @number = number
+  end
+
+  def to_s
+    "#{quantity} #{container}"
+  end
+
+  def quantity
+    number.to_s
+  end
+
+  def container
+    "bottles"
+  end
+
+  def action
+    "Take #{pronoun} down and pass it around"
+  end
+
+  def pronoun
+    "one"
+  end
+
+  def successor
+    BottleNumber.for(number - 1)
+  end
+end
+
+class BottleNumber0 < BottleNumber
+  def quantity
+    "no more"
+  end
+
+  def action
+    "Go to the store and buy some more"
+  end
+
+  def successor
+    BottleNumber.for(99)
+  end
+end
+
+class BottleNumber1 < BottleNumber
+  def container
+    "bottle"
+  end
+
+  def pronoun
+    "it"
+  end
+end
+
+class BottleNumber6 < BottleNumber
+  def quantity
+    "1"
+  end
+
+  def container
+    "six-pack"
+  end
+end