Support for testing bots in poller mode and non-Rails apps

CHANGELOG.md

@@ -5,6 +5,10 @@
     - Changed signature `dispatch(bot, update) => dispatch(update, bot)`.
     - `update` helper is symbolized by default.
     - `build_update(type, data)` is dropped in favor of `deep_stringify(type => data)`.
+- Provide support for integration testing of bots in poller mode and non-Rails apps.
+  __Breaking changes__:
+    - `telegram/bot/rspec/integration` is moved to `telegram/bot/rspec/integration/rails`.
+    - `:telegram_bot` rspec tag is replaced with `telegram_bot: :rails`.
 
 # 0.13.1
 

README.md

@@ -192,8 +192,9 @@ end
 #### Reply helpers
 
 There are helpers to respond for basic actions. They just set chat/message/query
-identifiers from update. See [`ReplyHelpers`](https://github.com/telegram-bot-rb/telegram-bot/blob/master/lib/telegram/bot/updates_controller/reply_helpers.rb) module for more information.
-Here are this methods signatures:
+identifiers from update. See
+[`ReplyHelpers`](https://github.com/telegram-bot-rb/telegram-bot/blob/master/lib/telegram/bot/updates_controller/reply_helpers.rb)
+module for more information. Here are this methods signatures:
 
 ```ruby
 def respond_with(type, params); end
@@ -421,19 +422,27 @@ tags. In RSpec < 3.4 it's require to use `include_context` explicitly.
 See [list of available helpers](https://github.com/telegram-bot-rb/telegram-bot/tree/master/lib/telegram/bot/rspec)
 for details.
 
-Integration tests simulate webhooks from Telegram. It works for Rails applications
-using bot in webhooks mode without any additional configuration,
-and may require some setup in other cases. It works on top of request-spec,
-so it's required to use `type: :request` or place specs in `spec/requests` directory
-with RSpec's `infer_spec_type_from_file_location!`.
+There are 3 types of integration tests:
+
+- `:rails` - for testing bot in webhooks-mode in Rails application.
+  It simulates webhook requests like request specs, POSTing data to controller's endpoint.
+- `:rack` - for testing bot in webhooks-mode in non-Rails application.
+  It uses `rack-test` gem to POST requests to bot's endpoint.
+- `:poller` - calls `.dispatch` directly on controller class.
+
+Pick the appropriate one, then require `telegram/bot/rspec/integration/#{type}`
+and mark spec group with tag `telegram_bot: type`. See configuration options
+for each type in `telegram/bot/rspec/integration/`.
+
+Here is example for Rails app:
 
 ```ruby
 # spec/requests/telegram_webhooks_spec.rb
-require 'telegram/bot/rspec/integration'
+require 'telegram/bot/rspec/integration/rails'
 
-RSpec.describe TelegramWebhooksController, :telegram_bot do
+RSpec.describe TelegramWebhooksController, telegram_bot: :rails do
   # for old RSpec:
-  # include_context 'telegram/bot/integration'
+  # include_context 'telegram/bot/integration/rails'
 
   # Main method is #dispatch(update). Some helpers are:
   #   #dispatch_message(text, options = {})
@@ -466,7 +475,11 @@ end
 ```
 
 There is context for testing bot controller in the way similar to Rails controller tests.
-It's supposed to be low-level alternative for request specs
+It's supposed to be low-level alternative for request specs. Among the differencies is
+that controller tests use single controller instance for all dispatches in single exaple,
+session is stubbed (does not use configured store engine), and update is not serialized
+so it support mocks. This can be useful for unit testing, but should not be considered as
+default way to test bot.
 
 ```ruby
 require 'telegram/bot/updates_controller/rspec_helpers'

lib/telegram/bot/rspec.rb

@@ -2,6 +2,15 @@ module Telegram
   module Bot
     module RSpec
       autoload :ClientMatchers, 'telegram/bot/rspec/client_matchers'
+
+      module_function
+
+      # Yelds a block if `include_context` is supported.
+      def with_include_context
+        ::RSpec.configure do |config|
+          yield(config) if config.respond_to?(:include_context)
+        end
+      end
     end
   end
 end

lib/telegram/bot/rspec/callback_query_helpers.rb

@@ -3,7 +3,6 @@ require 'telegram/bot/rspec/message_helpers'
 
 # Shared helpers for testing callback query updates.
 RSpec.shared_context 'telegram/bot/callback_query' do
-  include_context 'telegram/bot/integration'
   include_context 'telegram/bot/message_helpers'
 
   subject { -> { dispatch callback_query: payload } }
@@ -38,9 +37,3 @@ RSpec.shared_context 'telegram/bot/callback_query' do
     ).with(hash_including(options))
   end
 end
-
-RSpec.configure do |config|
-  if config.respond_to?(:include_context)
-    config.include_context 'telegram/bot/callback_query', :telegram_bot, :callback_query
-  end
-end

lib/telegram/bot/rspec/integration.rb

@@ -1,36 +0,0 @@
-require 'telegram/bot/rspec/message_helpers'
-require 'telegram/bot/rspec/callback_query_helpers'
-
-RSpec.shared_context 'telegram/bot/integration' do
-  include Telegram::Bot::RSpec::ClientMatchers
-  include_context 'telegram/bot/message_helpers'
-
-  let(:bot) { Telegram.bot }
-  let(:controller_path) do
-    route_name = Telegram::Bot::RoutesHelper.route_name_for_bot(bot)
-    Rails.application.routes.url_helpers.public_send("#{route_name}_path")
-  end
-  let(:request_headers) do
-    {
-      'ACCEPT' => 'application/json',
-      'Content-Type' => 'application/json',
-    }
-  end
-  let(:clear_session?) { described_class.respond_to?(:session_store) }
-  before { described_class.session_store.try!(:clear) if clear_session? }
-
-  # Process update.
-  def dispatch(update)
-    if ActionPack::VERSION::MAJOR >= 5
-      post(controller_path, params: update.to_json, headers: request_headers)
-    else
-      post(controller_path, update.to_json, request_headers)
-    end
-  end
-end
-
-RSpec.configure do |config|
-  if config.respond_to?(:include_context)
-    config.include_context 'telegram/bot/integration', :telegram_bot
-  end
-end

lib/telegram/bot/rspec/integration/poller.rb

@@ -0,0 +1,14 @@
+require 'telegram/bot/rspec/integration/shared'
+
+RSpec.shared_context 'telegram/bot/integration/poller' do
+  include_context 'telegram/bot/integration/shared'
+  let(:controller_class) { described_class }
+
+  def dispatch(update)
+    controller_class.dispatch(bot, update.as_json)
+  end
+end
+
+Telegram::Bot::RSpec.with_include_context do |config|
+  config.include_context 'telegram/bot/integration/poller', telegram_bot: :poller
+end

lib/telegram/bot/rspec/integration/rack.rb

@@ -0,0 +1,24 @@
+require 'telegram/bot/rspec/integration/shared'
+require 'rack/test'
+
+RSpec.shared_context 'telegram/bot/integration/rack' do
+  include_context 'telegram/bot/integration/shared'
+  include Rack::Test::Methods
+
+  let(:request_path) { raise '`let(:request_path) { path to bot }` is required' }
+  let(:app) { raise '`let(:app) { your rack app here }` is required' }
+  let(:request_headers) do
+    {
+      'ACCEPT' => 'application/json',
+      'CONTENT_TYPE' => 'application/json',
+    }
+  end
+
+  def dispatch(update)
+    post request_path, update.to_json, request_headers
+  end
+end
+
+Telegram::Bot::RSpec.with_include_context do |config|
+  config.include_context 'telegram/bot/integration/rack', telegram_bot: :rack
+end

lib/telegram/bot/rspec/integration/rails.rb

@@ -0,0 +1,30 @@
+require 'telegram/bot/rspec/integration/shared'
+
+#
+RSpec.shared_context 'telegram/bot/integration/rails', type: :request do
+  include_context 'telegram/bot/integration/shared'
+
+  let(:controller_path) do
+    route_name = Telegram::Bot::RoutesHelper.route_name_for_bot(bot)
+    Rails.application.routes.url_helpers.public_send("#{route_name}_path")
+  end
+  let(:request_headers) do
+    {
+      'Accept' => 'application/json',
+      'Content-Type' => 'application/json',
+    }
+  end
+
+  def dispatch(update)
+    if ActionPack::VERSION::MAJOR >= 5
+      post(controller_path, params: update.to_json, headers: request_headers)
+    else
+      post(controller_path, update.to_json, request_headers)
+    end
+  end
+end
+
+Telegram::Bot::RSpec.with_include_context do |config|
+  config.include_context 'telegram/bot/integration/rails', :telegram_bot
+  config.include_context 'telegram/bot/integration/rails', telegram_bot: :rails
+end

lib/telegram/bot/rspec/integration/shared.rb

@@ -0,0 +1,14 @@
+require 'active_support/json'
+require 'telegram/bot'
+require 'telegram/bot/rspec/message_helpers'
+require 'telegram/bot/rspec/callback_query_helpers'
+
+RSpec.shared_context 'telegram/bot/integration/shared' do
+  include Telegram::Bot::RSpec::ClientMatchers
+  include_context 'telegram/bot/message_helpers'
+  include_context 'telegram/bot/callback_query', :callback_query
+
+  let(:bot) { Telegram.bot }
+  let(:clear_session?) { described_class.respond_to?(:session_store) }
+  before { described_class.session_store.try!(:clear) if clear_session? }
+end

lib/telegram/bot/updates_controller/rspec_helpers.rb

@@ -1,9 +1,11 @@
 require 'telegram/bot/updates_controller/testing'
 require 'telegram/bot/rspec/message_helpers'
+require 'telegram/bot/rspec/callback_query_helpers'
 
 RSpec.shared_context 'telegram/bot/updates_controller' do
   include Telegram::Bot::RSpec::ClientMatchers
   include_context 'telegram/bot/message_helpers'
+  include_context 'telegram/bot/callback_query', :callback_query
 
   let(:controller_class) { described_class }
   let(:controller) do
@@ -34,8 +36,6 @@ RSpec.shared_context 'telegram/bot/updates_controller' do
   end
 end
 
-RSpec.configure do |config|
-  if config.respond_to?(:include_context)
-    config.include_context 'telegram/bot/updates_controller', type: :telegram_bot_controller
-  end
+Telegram::Bot::RSpec.with_include_context do |config|
+  config.include_context 'telegram/bot/updates_controller', type: :telegram_bot_controller
 end

spec/integration_helper.rb

@@ -1,4 +1,4 @@
-require 'telegram/bot/rspec/integration'
+require 'telegram/bot/rspec/integration/rails'
 require 'action_controller'
 require 'action_dispatch'
 

spec/support/examples/integration.rb

@@ -0,0 +1,24 @@
+RSpec.shared_examples 'shared integration examples' do
+  let(:bot) { Telegram::Bot::ClientStub.new('token') }
+  let(:controller_class) do
+    Class.new(Telegram::Bot::UpdatesController) do
+      def start(data = nil, *)
+        respond_with :message, text: "Hi #{data}"
+      end
+
+      def callback_query(data, *)
+        answer_callback_query "pong: #{data}"
+      end
+    end
+  end
+
+  describe '#start' do
+    subject { -> { dispatch_command(:start, :test_data) } }
+    it { should respond_with_message('Hi test_data') }
+  end
+
+  describe '#callback_query', :callback_query do
+    let(:data) { :test_data }
+    it { should answer_callback_query "pong: #{data}" }
+  end
+end

spec/telegram/bot/rspec/callback_query_helpers_spec.rb

@@ -0,0 +1,42 @@
+require 'telegram/bot/rspec/integration/poller'
+
+RSpec.describe 'Integration spec helpers', telegram_bot: :poller do
+  let(:bot) { Telegram::Bot::ClientStub.new('token') }
+  let(:controller_class) do
+    Class.new(Telegram::Bot::UpdatesController) do
+      include Telegram::Bot::UpdatesController::CallbackQueryContext
+
+      def callback_query(data = nil, *)
+        answer_callback_query "data: #{data}"
+      end
+
+      def context_callback_query(data = nil, *)
+        answer_callback_query "data: #{data}", extra: :param
+      end
+
+      def answer_and_edit_callback_query(data = nil, *)
+        answer_callback_query "data: #{data}"
+        edit_message :text, text: 'edited-text', extra: :param
+      end
+    end
+  end
+
+  describe '#callback_query', :callback_query do
+    let(:data) { 'unknown:command' }
+    it { should answer_callback_query("data: #{data}") }
+  end
+
+  describe '#context_callback_query', :callback_query do
+    let(:data) { 'context:test:payload' }
+    it { should answer_callback_query('data: test:payload', extra: :param) }
+    it { should_not edit_current_message(:text) }
+  end
+
+  describe '#answer_and_edit_callback_query', :callback_query do
+    let(:data) { 'answer_and_edit:test:payload' }
+    it do
+      should answer_callback_query(/test:payload/).
+        and edit_current_message(:text, text: /edited/, extra: :param)
+    end
+  end
+end

spec/telegram/bot/rspec/integration/poller_spec.rb

@@ -0,0 +1,5 @@
+require 'telegram/bot/rspec/integration/poller'
+
+RSpec.describe 'Poller integration spec', telegram_bot: :poller do
+  include_examples 'shared integration examples'
+end

spec/telegram/bot/rspec/integration/rack_spec.rb

@@ -0,0 +1,20 @@
+require 'telegram/bot/rspec/integration/rack'
+
+RSpec.describe 'Rack integration spec', telegram_bot: :rack do
+  include_examples 'shared integration examples'
+  let(:request_path) { '/bot' }
+  let(:app) do
+    path = request_path
+    bot_app = Telegram::Bot::Middleware.new(bot, controller_class)
+    app = Rack::Builder.new do
+      map(path) { run bot_app }
+      run ->(env) { raise "Route is not mapped: #{env['PATH_INFO']}" }
+    end
+    if ActionPack::VERSION::MAJOR >= 5
+      app
+    else
+      require 'action_dispatch/middleware/params_parser'
+      ActionDispatch::ParamsParser.new(app)
+    end
+  end
+end

spec/telegram/bot/rspec/integration/rails_spec.rb

@@ -0,0 +1 @@
+# Tested in spec/integration

spec/telegram/bot/rspec/integration_spec.rb

@@ -1,111 +0,0 @@
-require 'telegram/bot/rspec/integration'
-require 'action_controller'
-require 'action_dispatch'
-
-RSpec.describe 'Integrations helper', :telegram_bot do
-  include ActionDispatch::Integration::Runner
-  def reset_template_assertion
-  end
-
-  let(:app) do
-    app = Telegram::Bot::Middleware.new(bot, controller)
-    if ActionPack::VERSION::MAJOR >= 5
-      app
-    else
-      require 'action_dispatch/middleware/params_parser'
-      ActionDispatch::ParamsParser.new(app)
-    end
-  end
-  let(:bot) { Telegram::Bot::ClientStub.new('token') }
-  let(:controller_path) { '/' }
-  let(:controller) do
-    Class.new(Telegram::Bot::UpdatesController) do
-      def start(*args)
-        respond_with :message, text: "Start: #{args.inspect}, option: #{payload[:option]}"
-      end
-    end
-  end
-
-  describe '#default_message_options' do
-    subject { default_message_options }
-    it { should eq from: {id: from_id}, chat: {id: chat_id} }
-  end
-
-  describe '#dispatch' do
-    subject { -> { dispatch message: {text: '/start', **default_message_options} } }
-    it { should respond_with_message 'Start: [], option: ' }
-  end
-
-  describe '#dispatch_message' do
-    subject { -> { dispatch_message "/start #{args.join ' '}", options } }
-    let(:args) { %w[asd qwe] }
-    let(:options) { {} }
-    it { should respond_with_message "Start: #{args.inspect}, option: " }
-
-    context 'with options' do
-      let(:options) { {option: 1} }
-      it { should respond_with_message "Start: #{args.inspect}, option: 1" }
-
-      context 'and chat_id is not set' do
-        let(:options) { super().merge(chat: nil) }
-        it { should raise_error(/chat is not present/) }
-      end
-    end
-  end
-
-  describe '#dispatch_command' do
-    subject { -> { dispatch_command :start, *args } }
-    let(:args) { [] }
-    it { should respond_with_message "Start: #{args.inspect}, option: " }
-
-    context 'with args' do
-      let(:args) { %w[asd qwe] }
-      it { should respond_with_message "Start: #{args.inspect}, option: " }
-    end
-
-    context 'with options' do
-      let(:args) { ['asd', 'qwe', option: 1] }
-      it { should respond_with_message "Start: #{args[0...-1].inspect}, option: 1" }
-    end
-  end
-
-  describe 'callback queries', :callback_query do
-    let(:controller) do
-      Class.new(Telegram::Bot::UpdatesController) do
-        include Telegram::Bot::UpdatesController::CallbackQueryContext
-
-        def callback_query(data = nil, *)
-          answer_callback_query "data: #{data}"
-        end
-
-        def context_callback_query(data = nil, *)
-          answer_callback_query "data: #{data}", extra: :param
-        end
-
-        def answer_and_edit_callback_query(data = nil, *)
-          answer_callback_query "data: #{data}"
-          edit_message :text, text: 'edited-text', extra: :param
-        end
-      end
-    end
-
-    describe '#callback_query' do
-      let(:data) { 'unknown:command' }
-      it { should answer_callback_query("data: #{data}") }
-    end
-
-    describe '#context_callback_query' do
-      let(:data) { 'context:test:payload' }
-      it { should answer_callback_query('data: test:payload', extra: :param) }
-      it { should_not edit_current_message(:text) }
-    end
-
-    describe '#answer_and_edit_callback_query' do
-      let(:data) { 'answer_and_edit:test:payload' }
-      it do
-        should answer_callback_query(/test:payload/).
-          and edit_current_message(:text, text: /edited/, extra: :param)
-      end
-    end
-  end
-end

spec/telegram/bot/rspec/message_helpers_spec.rb

@@ -0,0 +1,115 @@
+require 'telegram/bot/rspec/integration/poller'
+
+RSpec.describe 'Integration: message helpers', telegram_bot: :poller do
+  describe '#default_message_options' do
+    subject { default_message_options }
+    it { should eq from: {id: from_id}, chat: {id: chat_id} }
+  end
+
+  describe '#dispatch_message' do
+    subject { -> { dispatch_message text, options } }
+    let(:text) { '/start asd qwe' }
+    let(:options) { {} }
+    let(:result) { double(:result) }
+
+    it 'invokes dispatch' do
+      expect(self).to receive(:dispatch).with(
+        message: hash_including(default_message_options.merge(
+          text: text,
+        )),
+      ) { result }
+      expect(subject.call).to eq result
+    end
+
+    context 'with options' do
+      let(:options) { {option: 1} }
+      it 'invokes dispatch' do
+        expect(self).to receive(:dispatch).with(
+          message: hash_including(default_message_options.merge(
+            text: text,
+          ).merge(options)),
+        ) { result }
+        expect(subject.call).to eq result
+      end
+    end
+  end
+
+  describe '#dispatch_command' do
+    subject { -> { dispatch_command :start, *args } }
+    let(:args) { [] }
+    let(:result) { double(:result) }
+
+    it 'invokes dispatch' do
+      expect(self).to receive(:dispatch).with(
+        message: hash_including(default_message_options.merge(
+          text: '/start',
+        )),
+      ) { result }
+      expect(subject.call).to eq result
+    end
+
+    context 'with args & options' do
+      let(:args) { [*params, options] }
+      let(:params) { %w[qwe asd] }
+      let(:options) { {option: 1} }
+      it 'invokes dispatch' do
+        expect(self).to receive(:dispatch).with(
+          message: hash_including(default_message_options.merge(
+            text: "/start #{params.join(' ')}",
+          ).merge(options)),
+        ) { result }
+        expect(subject.call).to eq result
+      end
+    end
+  end
+end
+
+# Old specs
+RSpec.describe 'Integration: message helpers', telegram_bot: :poller do
+  let(:bot) { Telegram::Bot::ClientStub.new('token') }
+  let(:controller_class) do
+    Class.new(Telegram::Bot::UpdatesController) do
+      def start(*args)
+        respond_with :message, text: "Start: #{args.inspect}, option: #{payload['option']}"
+      end
+    end
+  end
+
+  describe '#default_message_options' do
+    subject { default_message_options }
+    it { should eq from: {id: from_id}, chat: {id: chat_id} }
+  end
+
+  describe '#dispatch_message' do
+    subject { -> { dispatch_message "/start #{args.join ' '}", options } }
+    let(:args) { %w[asd qwe] }
+    let(:options) { {} }
+    it { should respond_with_message "Start: #{args.inspect}, option: " }
+
+    context 'with options' do
+      let(:options) { {option: 1} }
+      it { should respond_with_message "Start: #{args.inspect}, option: 1" }
+
+      context 'and chat_id is not set' do
+        let(:options) { super().merge(chat: nil) }
+        it { should raise_error(/chat is not present/) }
+      end
+    end
+  end
+
+  describe '#dispatch_command' do
+    subject { -> { dispatch_command :start, *args } }
+    let(:args) { [] }
+    it { should respond_with_message "Start: #{args.inspect}, option: " }
+
+    context 'with args' do
+      let(:args) { %w[asd qwe] }
+      it { should respond_with_message "Start: #{args.inspect}, option: " }
+    end
+
+    context 'with options' do
+      let(:args) { ['asd', 'qwe', option: 1] }
+      it { should respond_with_message "Start: #{args[0...-1].inspect}, option: 1" }
+    end
+  end
+end