Add ruby and tooling: RSpec, Rubocop, Overcommit, Guard, .gitignore,

.editorconfig

.editorconfig

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+# http://EditorConfig.org
+root = true
+
+[*]
+# Unix-style newlines
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# Default indentation
+indent_style = space
+indent_size = 2
+
+# Set default charset
+charset = utf-8

.gitignore

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+coverage
+tmp

.overcommit.yml

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+# extend the default configuration defined in:
+# https://github.com/brigade/overcommit/blob/master/config/default.yml
+#
+# At the topmost level of this YAML file is a key representing type of hook
+# being run (e.g. pre-commit, commit-msg, etc.). Within each type you can
+# customize each hook, such as whether to only run it on certain files (via
+# `include`), whether to only display output if it fails (via `quiet`), etc.
+#
+# For a complete list of hooks, see:
+# https://github.com/brigade/overcommit/tree/master/lib/overcommit/hook
+#
+# For a complete list of options that you can use to customize hooks, see:
+# https://github.com/brigade/overcommit#configuration
+#
+PostCheckout:
+  BundleInstall:
+    enabled: true
+
+PostMerge:
+  BundleInstall:
+    enabled: true
+
+PostRewrite:
+  BundleInstall:
+    enabled: true
+
+PreCommit:
+  BundleCheck:
+    enabled: true
+  LocalPathsInGemfile:
+    enabled: true
+  RuboCop:
+    enabled: true
+  YamlSyntax:
+    enabled: true
+
+PrePush:
+  RSpec:
+    enabled: true
+

.rspec

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+--color
+--format documentation
+--order rand
+--require spec_helper

.rubocop

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+--display-cop-names
+--display-style-guide
+--extra-details

.rubocop.yml

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+#
+# Our adjustments to rubocop default code policies.
+#
+# See http://rubocop.readthedocs.io/en/latest/ for detailed configuration options documentation
+
+# Additional cops for working with RSpec. See https://github.com/backus/rubocop-rspec
+require: rubocop-rspec
+
+AllCops:
+  Exclude:
+    - 'tmp/**/*.rb'
+
+Metrics/BlockLength:
+  Exclude:
+    # The default guard-rspec config fails this, but it's ok.
+    - 'Guardfile'
+    - 'spec/**/*_spec.rb'
+
+# Big screens are common :)
+Metrics/LineLength:
+  Max: 120
+
+# We use RSpec as a format linter, so no specific classes under test neccessarily :)
+RSpec/DescribeClass:
+  Enabled: false
+
+# Prefer to use the up-front message expectations
+RSpec/MessageSpies:
+  Enabled: false
+
+# Prefer structure over small indentation
+RSpec/NestedGroups:
+  Max: 5
+
+Style/Documentation:
+  Enabled: false
+
+# Prefer to create "real" booleans using double negation
+Style/DoubleNegation:
+  Enabled: false
+
+Style/StringLiterals:
+  EnforcedStyle: double_quotes
+
+Style/TrailingCommaInLiteral:
+  EnforcedStyleForMultiline: comma
+

.ruby-version

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+2.4.2

.simplecov

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+SimpleCov.start do
+  minimum_coverage 100
+end

Gemfile

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+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+ruby File.read(File.join(__dir__, ".ruby-version")).strip
+
+group :test do
+  gem "rspec"
+  gem "simplecov"
+end
+
+group :development do
+  gem "guard-bundler"
+  gem "guard-rspec"
+  gem "guard-rubocop"
+
+  gem "overcommit"
+
+  gem "rubocop"
+  gem "rubocop-rspec"
+end

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.3.0)
+    childprocess (0.8.0)
+      ffi (~> 1.0, >= 1.0.11)
+    coderay (1.1.2)
+    diff-lcs (1.3)
+    docile (1.1.5)
+    ffi (1.9.18)
+    formatador (0.2.5)
+    guard (2.14.1)
+      formatador (>= 0.2.4)
+      listen (>= 2.7, < 4.0)
+      lumberjack (~> 1.0)
+      nenv (~> 0.1)
+      notiffany (~> 0.0)
+      pry (>= 0.9.12)
+      shellany (~> 0.0)
+      thor (>= 0.18.1)
+    guard-bundler (2.1.0)
+      bundler (~> 1.0)
+      guard (~> 2.2)
+      guard-compat (~> 1.1)
+    guard-compat (1.2.1)
+    guard-rspec (4.7.3)
+      guard (~> 2.1)
+      guard-compat (~> 1.1)
+      rspec (>= 2.99.0, < 4.0)
+    guard-rubocop (1.3.0)
+      guard (~> 2.0)
+      rubocop (~> 0.20)
+    iniparse (1.4.4)
+    json (2.1.0)
+    listen (3.1.5)
+      rb-fsevent (~> 0.9, >= 0.9.4)
+      rb-inotify (~> 0.9, >= 0.9.7)
+      ruby_dep (~> 1.2)
+    lumberjack (1.0.12)
+    method_source (0.9.0)
+    nenv (0.3.0)
+    notiffany (0.1.1)
+      nenv (~> 0.1)
+      shellany (~> 0.0)
+    overcommit (0.41.0)
+      childprocess (~> 0.6, >= 0.6.3)
+      iniparse (~> 1.4)
+    parallel (1.12.0)
+    parser (2.4.0.0)
+      ast (~> 2.2)
+    powerpack (0.1.1)
+    pry (0.11.1)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    rainbow (2.2.2)
+      rake
+    rake (12.1.0)
+    rb-fsevent (0.10.2)
+    rb-inotify (0.9.10)
+      ffi (>= 0.5.0, < 2)
+    rspec (3.6.0)
+      rspec-core (~> 3.6.0)
+      rspec-expectations (~> 3.6.0)
+      rspec-mocks (~> 3.6.0)
+    rspec-core (3.6.0)
+      rspec-support (~> 3.6.0)
+    rspec-expectations (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-mocks (3.6.0)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.6.0)
+    rspec-support (3.6.0)
+    rubocop (0.50.0)
+      parallel (~> 1.10)
+      parser (>= 2.3.3.1, < 3.0)
+      powerpack (~> 0.1)
+      rainbow (>= 2.2.2, < 3.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (~> 1.0, >= 1.0.1)
+    rubocop-rspec (1.18.0)
+      rubocop (>= 0.50.0)
+    ruby-progressbar (1.9.0)
+    ruby_dep (1.5.0)
+    shellany (0.0.1)
+    simplecov (0.15.1)
+      docile (~> 1.1.0)
+      json (>= 1.8, < 3)
+      simplecov-html (~> 0.10.0)
+    simplecov-html (0.10.2)
+    thor (0.20.0)
+    unicode-display_width (1.3.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  guard-bundler
+  guard-rspec
+  guard-rubocop
+  overcommit
+  rspec
+  rubocop
+  rubocop-rspec
+  simplecov
+
+RUBY VERSION
+   ruby 2.4.2p198
+
+BUNDLED WITH
+   1.15.4

Guardfile

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+# frozen_string_literal: true
+
+# A sample Guardfile
+# More info at https://github.com/guard/guard#readme
+
+## Uncomment and set this to only include directories you want to watch
+# directories %w(app lib config test spec features) \
+#  .select{|d| Dir.exists?(d) ? d : UI.warning("Directory #{d} does not exist")}
+
+## Note: if you are using the `directories` clause above and you are not
+## watching the project directory ('.'), then you will want to move
+## the Guardfile to a watched dir and symlink it back, e.g.
+#
+#  $ mkdir config
+#  $ mv Guardfile config/
+#  $ ln -s config/Guardfile .
+#
+# and, you'll have to watch "config/Guardfile" instead of "Guardfile"
+
+guard :bundler do
+  require "guard/bundler"
+  require "guard/bundler/verify"
+  helper = Guard::Bundler::Verify.new
+
+  files = ["Gemfile"]
+  files += Dir["*.gemspec"] if files.any? { |f| helper.uses_gemspec?(f) }
+
+  # Assume files are symlinked from somewhere
+  files.each { |file| watch(helper.real_path(file)) }
+end
+
+# Note: The cmd option is now required due to the increasing number of ways
+#       rspec may be run, below are examples of the most common uses.
+#  * bundler: 'bundle exec rspec'
+#  * bundler binstubs: 'bin/rspec'
+#  * spring: 'bin/rspec' (This will use spring if running and you have
+#                          installed the spring binstubs per the docs)
+#  * zeus: 'zeus rspec' (requires the server to be started separately)
+#  * 'just' rspec: 'rspec'
+
+guard :rspec, cmd: "bundle exec rspec" do
+  require "guard/rspec/dsl"
+  dsl = Guard::RSpec::Dsl.new(self)
+
+  # Feel free to open issues for suggestions and improvements
+
+  # RSpec files
+  rspec = dsl.rspec
+  watch(rspec.spec_helper) { rspec.spec_dir }
+  watch(rspec.spec_support) { rspec.spec_dir }
+  watch(rspec.spec_files)
+
+  # Ruby files
+  ruby = dsl.ruby
+  dsl.watch_spec_files_for(ruby.lib_files)
+
+  # Rails files
+  rails = dsl.rails(view_extensions: %w[erb haml slim])
+  dsl.watch_spec_files_for(rails.app_files)
+  dsl.watch_spec_files_for(rails.views)
+
+  watch(rails.controllers) do |m|
+    [
+      rspec.spec.call("routing/#{m[1]}_routing"),
+      rspec.spec.call("controllers/#{m[1]}_controller"),
+      rspec.spec.call("acceptance/#{m[1]}"),
+    ]
+  end
+
+  # Rails config changes
+  watch(rails.spec_helper)     { rspec.spec_dir }
+  watch(rails.routes)          { "#{rspec.spec_dir}/routing" }
+  watch(rails.app_controller)  { "#{rspec.spec_dir}/controllers" }
+
+  # Capybara features specs
+  watch(rails.view_dirs)     { |m| rspec.spec.call("features/#{m[1]}") }
+  watch(rails.layouts)       { |m| rspec.spec.call("features/#{m[1]}") }
+
+  # Turnip features and steps
+  watch(%r{^spec/acceptance/(.+)\.feature$})
+  watch(%r{^spec/acceptance/steps/(.+)_steps\.rb$}) do |m|
+    Dir[File.join("**/#{m[1]}.feature")][0] || "spec/acceptance"
+  end
+end
+
+rubocop_cli_args = []
+
+if ENV["AUTOCORRECT"]
+  puts "*" * 80, "Rubocop auto-correct mode enabled", "*" * 80
+  rubocop_cli_args << "--auto-correct"
+else
+  puts "*" * 80
+  puts "You can set Rubocop to auto-correct fixable offenses by setting ENV['AUTOCORRECT']"
+  puts "e.g. `$ AUTOCORRECT=yesplease guard`"
+  puts "*" * 80
+end
+
+guard :rubocop, run_on_start: true, cli: rubocop_cli_args.join(" ") do
+  watch(/.+\.rb$/)
+  watch(%r{(?:.+/)?\.rubocop(?:_todo)?\.yml$}) { |m| File.dirname(m[0]) }
+end