Rails new app API only with PostgreSQL & rspec

[blackchestnut]

rails new YOUR_APP_NAME --api --database=postgresql --skip-test --skip-action-cable --skip-action-mailer --skip-javascript

rails db:create

Update Gemfile

# ...

group :development do
  # ...

  gem 'rubocop-rails', require: false
  gem 'guard'
  gem 'guard-bundler', require: false
  gem 'guard-pow', require: false
  gem 'guard-rspec', require: false
  gem 'guard-rubocop', require: false
  gem 'guard-spring', require: false

  gem 'better_errors'
  gem 'binding_of_caller'
  gem 'listen'
  gem 'spring'
end

group :test do
  gem 'rspec-collection_matchers'
  gem 'rspec-its'
  gem 'rspec-rails'
  gem 'rspec_junit_formatter'
  gem 'shoulda'
  gem 'shoulda-matchers'
  gem 'timecop'
  gem 'vcr'
  gem 'webmock', require: false
end

# ...

Install rspec

rails generate rspec:install

[blackchestnut]

Guardfile example

Guardfile

ignore %r{
  bin | public | node_modules | tmp | .git
}x

guard :bundler do
  watch('Gemfile')
  watch('Gemfile.lock')
end

group :specs, halt_on_fail: true do
  guard :rspec,
      cmd: 'bundle exec rspec --color --format documentation',
      all_after_pass: false,
      all_on_start: false,
      failed_mode: :keep 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

  guard :rubocop, all_on_start: false, keep_failed: false do
    watch(%r{.+\.rb$})
    watch(%r{(?:.+/)?\.rubocop\.yml$}) { |m| File.dirname(m[0]) }
  end
end

guard :pow do
  watch '.powrc'
  watch '.powenv'
  watch '.rvmrc'
  watch 'Gemfile'
  watch 'Gemfile.lock'
  watch 'config/application.rb'
  watch 'config/environment.rb'
  watch %r{^config/environments/.*\.rb$}
  watch %r{^config/initializers/.*\.rb$}
  watch %r{^config/middleware/.*\.rb$}
end