adds request spec generator shamelessly stollen from rspec-rails-swagger

rswag-specs/lib/generators/rspec/swagger/USAGE

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+Description:
+    This creates an RSpec request spec to define Swagger documentation for a
+    controller. It will create a test for each of the controller's methods.
+
+Example:
+    rails generate rspec:swagger V3::AccountsController
+
+    This will create:
+        spec/requests/v3/accounts_spec.rb

rswag-specs/lib/generators/rspec/swagger/swagger_generator.rb

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+require 'rspec/rails/swagger/route_parser'
+require 'rails/generators'
+
+module Rspec
+  module Generators
+    class SwaggerGenerator < ::Rails::Generators::NamedBase
+      source_root File.expand_path('../templates', __FILE__)
+
+      def setup
+        @routes = RSpec::Rails::Swagger::RouteParser.new(controller_path).routes
+      end
+
+      def create_spec_file
+        template 'spec.rb', File.join('spec/requests', "#{controller_path}_spec.rb")
+      end
+
+      private
+
+      def controller_path
+        file_path.chomp('_controller')
+      end
+    end
+  end
+end

rswag-specs/lib/generators/rspec/swagger/templates/spec.rb

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+require 'swagger_helper'
+
+RSpec.describe '<%= controller_path %>', type: :request do
+  <% @routes.each  do | template, path_item | %>
+  path '<%= template %>' do
+<% unless path_item[:params].empty? -%>
+    # You'll want to customize the parameter types...
+  <% path_item[:params].each  do |param| -%>
+    parameter '<%= param %>', in: :body, type: :string
+  <% end -%>
+<% end -%>
+<% path_item[:actions].each do | action, details | -%>
+    <%= action %>('<%= details[:summary] %>') do
+      response(200, 'successful') do
+<% unless path_item[:params].empty? -%>
+      <% path_item[:params].each do |param| -%>
+        let(:<%= param %>) { '123' }
+      <% end -%>
+<% end  -%>
+
+        after do |example|
+          example.metadata[:response][:examples] = { 'application/json' => JSON.parse(response.body, symbolize_names: true) }
+        end
+        run_test!
+      end
+    end
+<% end  -%>
+  end
+<% end -%>
+end