Add spec

spec/openapi_3/openapi_3_spec.rb

@@ -0,0 +1,239 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'swagger spec v2.0' do
+  include_context "#{MODEL_PARSER} swagger example"
+
+  def app
+    Class.new(Grape::API) do
+      format :json
+
+      #  Thing stuff
+      desc 'This gets Things.' do
+        params Entities::Something.documentation
+        http_codes [{ code: 401, message: 'Unauthorized', model: Entities::ApiError }]
+      end
+      get '/thing' do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'This gets Things.' do
+        http_codes [
+          { code: 200, message: 'get Horses', model: Entities::Something },
+          { code: 401, message: 'HorsesOutError', model: Entities::ApiError }
+        ]
+      end
+      get '/thing2' do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'This gets Thing.' do
+        http_codes [{ code: 200, message: 'getting a single thing' }, { code: 401, message: 'Unauthorized' }]
+      end
+      params do
+        requires :id, type: Integer
+      end
+      get '/thing/:id' do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'This creates Thing.',
+           success: Entities::Something
+      params do
+        requires :text, type: String, documentation: { type: 'string', desc: 'Content of something.' }
+        requires :links, type: Array, documentation: { type: 'link', is_array: true }
+      end
+      post '/thing', http_codes: [{ code: 422, message: 'Unprocessible Entity' }] do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'This updates Thing.',
+           success: Entities::Something
+      params do
+        requires :id, type: Integer
+        optional :text, type: String, desc: 'Content of something.'
+        optional :links, type: Array, documentation: { type: 'link', is_array: true }
+      end
+      put '/thing/:id' do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'This deletes Thing.',
+           entity: Entities::Something
+      params do
+        requires :id, type: Integer
+      end
+      delete '/thing/:id' do
+        something = OpenStruct.new text: 'something'
+        present something, with: Entities::Something
+      end
+
+      desc 'dummy route.',
+           failure: [{ code: 401, message: 'Unauthorized' }]
+      params do
+        requires :id, type: Integer
+      end
+      delete '/dummy/:id' do
+      end
+
+      namespace :other_thing do
+        desc 'nested route inside namespace',
+             entity: Entities::QueryInput,
+             x: {
+               'amazon-apigateway-auth' => { type: 'none' },
+               'amazon-apigateway-integration' => { type: 'aws', uri: 'foo_bar_uri', httpMethod: 'get' }
+             }
+
+        params do
+          requires :elements, documentation: {
+            type: 'QueryInputElement',
+            desc: 'Set of configuration',
+            param_type: 'body',
+            is_array: true,
+            required: true
+          }
+        end
+        get '/:elements' do
+          present something, with: Entities::QueryInput
+        end
+      end
+
+      version 'v3', using: :path
+      add_swagger_documentation openapi_version: '3.0',
+                                api_version: 'v1',
+                                base_path: '/api',
+                                info: {
+                                  title: 'The API title to be displayed on the API homepage.',
+                                  description: 'A description of the API.',
+                                  contact_name: 'Contact name',
+                                  contact_email: '[email protected]',
+                                  contact_url: 'www.The-Contact-URL.org',
+                                  license: 'The name of the license.',
+                                  license_url: 'www.The-URL-of-the-license.org',
+                                  terms_of_service_url: 'www.The-URL-of-the-terms-and-service.com'
+                                }
+    end
+  end
+
+  describe 'whole documentation' do
+    subject do
+      get '/v3/swagger_doc'
+      puts last_response.body
+      JSON.parse(last_response.body)
+    end
+
+    describe 'swagger object' do
+      describe 'required keys' do
+        it { expect(subject.keys).to include 'openapi' }
+        it { expect(subject['openapi']).to eql '3.0.0' }
+        it { expect(subject.keys).to include 'info' }
+        it { expect(subject['info']).to be_a Hash }
+        it { expect(subject.keys).to include 'paths' }
+        it { expect(subject['paths']).to be_a Hash }
+      end
+
+      describe 'info object required keys' do
+        let(:info) { subject['info'] }
+
+        it { expect(info.keys).to include 'title' }
+        it { expect(info['title']).to be_a String }
+        it { expect(info.keys).to include 'version' }
+        it { expect(info['version']).to be_a String }
+
+        describe 'license object' do
+          let(:license) { subject['info']['license'] }
+
+          it { expect(license.keys).to include 'name' }
+          it { expect(license['name']).to be_a String }
+          it { expect(license.keys).to include 'url' }
+          it { expect(license['url']).to be_a String }
+        end
+
+        describe 'contact object' do
+          let(:contact) { subject['info']['contact'] }
+
+          it { expect(contact.keys).to include 'name' }
+          it { expect(contact['name']).to be_a String  }
+          it { expect(contact.keys).to include 'email' }
+          it { expect(contact['email']).to be_a String }
+          it { expect(contact.keys).to include 'url' }
+          it { expect(contact['url']).to be_a String }
+        end
+
+        describe 'global tags' do
+          let(:tags) { subject['tags'] }
+
+          it { expect(tags).to be_a Array }
+          it { expect(tags).not_to be_empty }
+        end
+      end
+
+      describe 'path object' do
+        let(:paths) { subject['paths'] }
+
+        it 'hides documentation paths per default' do
+          expect(paths.keys).not_to include '/swagger_doc', '/swagger_doc/{name}'
+        end
+
+        specify do
+          paths.each_pair do |path, value|
+            expect(path).to start_with('/')
+            expect(value).to be_a Hash
+            expect(value).not_to be_empty
+
+            value.each do |method, declaration|
+              expect(http_verbs).to include method
+              expect(declaration).to have_key('responses')
+
+              declaration['responses'].each do |status_code, response|
+                expect(status_code).to match(/\d{3}/)
+                expect(response).to have_key('description')
+              end
+            end
+          end
+        end
+      end
+
+      describe 'definitions object' do
+        let(:definitions) { subject['components']['schemas'] }
+
+        specify do
+          definitions.each do |model, properties|
+            expect(model).to match(/\w+/)
+            expect(properties).to have_key('properties')
+          end
+        end
+      end
+    end
+
+    describe 'swagger file' do
+      it do
+        # TODO: '/v3/other_thing/{elements}' path does not have a path parameter. Not sure on how to handle that.
+        expect(subject).to eql openapi_json
+      end
+    end
+  end
+
+  describe 'specific resource documentation' do
+    subject do
+      get '/v3/swagger_doc/other_thing'
+      JSON.parse(last_response.body)
+    end
+
+    let(:tags) { subject['tags'] }
+    specify do
+      expect(tags).to eql [
+        {
+          'name' => 'other_thing',
+          'description' => 'Operations about other_things'
+        }
+      ]
+    end
+  end
+end