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This is assuming you already have:

1. An existing Ruby/Rails API
2. Local server can start without issues

Steps:

1. Add gem "rswag" to your Gemfile

2. Add gem "rspec-rails" and gem "rswag-specs" to your Gemfile within the group :development, :test do...end block

etusm

Nest.js Cheat Sheet

Install Nest CLI

• npm i -g @nestjs/cli

Generator Commands

• nest new <project-name> / The project-name directory will be created, node modules and a few boilerplate files will be installed, and a src/ directory will be created and populated with files.
• nest generate controller / nest g co

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RestClient::Response - 200, 207
RestClient::NotFound - 404
RestClient::Unauthorized - 401
RestClient::BadRequest - 400
RestClient::InternalServerError - 500

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Capybara::DSL#methods:
  accept_alert              choose                find_all               has_no_content?          has_unchecked_field?      switch_to_frame
  accept_confirm            click_button          find_button            has_no_css?              has_xpath?                switch_to_window
  accept_prompt             click_link            find_by_id             has_no_current_path?     html                      text
  all                       click_link_or_button  find_field             has_no_field?            open_new_window           title
  assert_all_of_selectors   click_on              find_link              has_no_link?             page                      uncheck
  assert_current_path       current_host          first                  has_no_select?           query                     unselect
  assert_no_current_path    current_path          go_back                has_no_selector?         refute_selector           visit
  assert_no_selector        current_scope         go_forward