From ac288b93002289744d016c4ff4a4d3a86b6fddee Mon Sep 17 00:00:00 2001
From: Guo Xiang Tan <tgx_world@hotmail.com>
Date: Mon, 13 May 2019 10:37:49 +0800
Subject: [PATCH] Add frozen string literal comment to files.

---
 Gemfile                                                       | 2 ++
 app/controllers/chat_controller.rb                            | 2 ++
 app/controllers/public_controller.rb                          | 2 ++
 app/helpers/helper.rb                                         | 2 ++
 app/initializers/discourse_chat.rb                            | 2 ++
 app/jobs/onceoff/add_type_field.rb                            | 2 ++
 app/jobs/onceoff/migrate_from_slack_official.rb               | 2 ++
 app/jobs/regular/notify_chats.rb                              | 2 ++
 app/models/channel.rb                                         | 2 ++
 app/models/plugin_model.rb                                    | 2 ++
 app/models/rule.rb                                            | 2 ++
 app/routes/discourse.rb                                       | 2 ++
 app/routes/discourse_chat.rb                                  | 2 ++
 app/serializers/channel_serializer.rb                         | 2 ++
 app/serializers/rule_serializer.rb                            | 2 ++
 app/services/manager.rb                                       | 2 ++
 bin/pull_translations.rb                                      | 1 +
 lib/discourse_chat/provider.rb                                | 4 +++-
 lib/discourse_chat/provider/discord/discord_provider.rb       | 2 ++
 lib/discourse_chat/provider/flowdock/flowdock_provider.rb     | 2 ++
 lib/discourse_chat/provider/gitter/gitter_provider.rb         | 2 ++
 lib/discourse_chat/provider/matrix/matrix_provider.rb         | 2 ++
 .../provider/mattermost/mattermost_command_controller.rb      | 2 ++
 lib/discourse_chat/provider/mattermost/mattermost_provider.rb | 2 ++
 lib/discourse_chat/provider/rocketchat/rocketchat_provider.rb | 2 ++
 lib/discourse_chat/provider/slack/slack_command_controller.rb | 2 ++
 .../provider/slack/slack_enabled_setting_validator.rb         | 2 ++
 lib/discourse_chat/provider/slack/slack_message.rb            | 2 ++
 lib/discourse_chat/provider/slack/slack_message_formatter.rb  | 4 +++-
 lib/discourse_chat/provider/slack/slack_provider.rb           | 2 ++
 lib/discourse_chat/provider/slack/slack_transcript.rb         | 4 +++-
 .../provider/telegram/telegram_command_controller.rb          | 2 ++
 lib/discourse_chat/provider/telegram/telegram_initializer.rb  | 2 ++
 lib/discourse_chat/provider/telegram/telegram_provider.rb     | 2 ++
 lib/discourse_chat/provider/zulip/zulip_provider.rb           | 2 ++
 plugin.rb                                                     | 2 ++
 spec/dummy_provider.rb                                        | 1 +
 spec/helpers/helper_spec.rb                                   | 2 ++
 spec/jobs/onceoff/migrate_from_slack_official_spec.rb         | 2 ++
 spec/jobs/regular/notify_chats_spec.rb                        | 2 ++
 .../discourse_chat/provider/discord/discord_provider_spec.rb  | 2 ++
 .../provider/flowdock/flowdock_provider_spec.rb               | 2 ++
 .../discourse_chat/provider/gitter/gitter_provider_spec.rb    | 2 ++
 .../discourse_chat/provider/matrix/matrix_provider_spec.rb    | 2 ++
 .../provider/mattermost/mattermost_command_controller_spec.rb | 2 ++
 .../provider/mattermost/mattermost_provider_spec.rb           | 2 ++
 .../provider/rocketchat/rocketchat_provider_spec.rb           | 2 ++
 .../provider/slack/slack_command_controller_spec.rb           | 2 ++
 .../provider/slack/slack_message_formatter_spec.rb            | 2 ++
 spec/lib/discourse_chat/provider/slack/slack_provider_spec.rb | 2 ++
 .../discourse_chat/provider/slack/slack_transcript_spec.rb    | 2 ++
 .../provider/telegram/telegram_command_controller_spec.rb     | 2 ++
 .../provider/telegram/telegram_provider_spec.rb               | 2 ++
 spec/lib/discourse_chat/provider/zulip/zulip_provider_spec.rb | 2 ++
 spec/models/channel_spec.rb                                   | 2 ++
 spec/models/rule_spec.rb                                      | 2 ++
 spec/requests/chat_controller_spec.rb                         | 2 ++
 spec/requests/public_controller_spec.rb                       | 2 ++
 spec/services/manager_spec.rb                                 | 2 ++
 59 files changed, 119 insertions(+), 3 deletions(-)

diff --git a/Gemfile b/Gemfile
index 2a5f647..df32188 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 group :development do
   gem 'translations-manager', git: 'https://github.com/discourse/translations-manager.git'
 end
diff --git a/app/controllers/chat_controller.rb b/app/controllers/chat_controller.rb
index 787e00e..d9dbf1c 100644
--- a/app/controllers/chat_controller.rb
+++ b/app/controllers/chat_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::ChatController < ApplicationController
   requires_plugin DiscourseChat::PLUGIN_NAME
 
diff --git a/app/controllers/public_controller.rb b/app/controllers/public_controller.rb
index c3ad7b0..527cd51 100644
--- a/app/controllers/public_controller.rb
+++ b/app/controllers/public_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::PublicController < ApplicationController
   requires_plugin DiscourseChat::PLUGIN_NAME
 
diff --git a/app/helpers/helper.rb b/app/helpers/helper.rb
index d4a0586..c98b07a 100644
--- a/app/helpers/helper.rb
+++ b/app/helpers/helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Helper
 
diff --git a/app/initializers/discourse_chat.rb b/app/initializers/discourse_chat.rb
index 22031e8..ec173fc 100644
--- a/app/initializers/discourse_chat.rb
+++ b/app/initializers/discourse_chat.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module ::DiscourseChat
   PLUGIN_NAME = "discourse-chat-integration".freeze
 
diff --git a/app/jobs/onceoff/add_type_field.rb b/app/jobs/onceoff/add_type_field.rb
index 20de608..b75e0fe 100644
--- a/app/jobs/onceoff/add_type_field.rb
+++ b/app/jobs/onceoff/add_type_field.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class DiscourseChatAddTypeField < Jobs::Onceoff
     def execute_onceoff(args)
diff --git a/app/jobs/onceoff/migrate_from_slack_official.rb b/app/jobs/onceoff/migrate_from_slack_official.rb
index f250efd..9f71cae 100644
--- a/app/jobs/onceoff/migrate_from_slack_official.rb
+++ b/app/jobs/onceoff/migrate_from_slack_official.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class DiscourseChatMigrateFromSlackOfficial < Jobs::Onceoff
     def execute_onceoff(args)
diff --git a/app/jobs/regular/notify_chats.rb b/app/jobs/regular/notify_chats.rb
index 8ed597e..68486ef 100644
--- a/app/jobs/regular/notify_chats.rb
+++ b/app/jobs/regular/notify_chats.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Jobs
   class NotifyChats < Jobs::Base
     sidekiq_options retry: false
diff --git a/app/models/channel.rb b/app/models/channel.rb
index fc17c64..febe304 100644
--- a/app/models/channel.rb
+++ b/app/models/channel.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::Channel < DiscourseChat::PluginModel
   # Setup ActiveRecord::Store to use the JSON field to read/write these values
   store :value, accessors: [ :provider, :error_key, :error_info, :data ], coder: JSON
diff --git a/app/models/plugin_model.rb b/app/models/plugin_model.rb
index e2d9702..f2b89ca 100644
--- a/app/models/plugin_model.rb
+++ b/app/models/plugin_model.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::PluginModel < PluginStoreRow
   PLUGIN_NAME = 'discourse-chat-integration'
 
diff --git a/app/models/rule.rb b/app/models/rule.rb
index 32454c2..c74edba 100644
--- a/app/models/rule.rb
+++ b/app/models/rule.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::Rule < DiscourseChat::PluginModel
   # Setup ActiveRecord::Store to use the JSON field to read/write these values
   store :value, accessors: [ :channel_id, :type, :group_id, :category_id, :tags, :filter ], coder: JSON
diff --git a/app/routes/discourse.rb b/app/routes/discourse.rb
index dc22788..0a9ae87 100644
--- a/app/routes/discourse.rb
+++ b/app/routes/discourse.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 Discourse::Application.routes.append do
   mount ::DiscourseChat::AdminEngine, at: '/admin/plugins/chat', constraints: AdminConstraint.new
   mount ::DiscourseChat::PublicEngine, at: '/chat-transcript/', as: 'chat-transcript'
diff --git a/app/routes/discourse_chat.rb b/app/routes/discourse_chat.rb
index 5ccf234..810bab3 100644
--- a/app/routes/discourse_chat.rb
+++ b/app/routes/discourse_chat.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_dependency 'admin_constraint'
 
 module DiscourseChat
diff --git a/app/serializers/channel_serializer.rb b/app/serializers/channel_serializer.rb
index 80d5795..1ab0a8b 100644
--- a/app/serializers/channel_serializer.rb
+++ b/app/serializers/channel_serializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require_relative './rule_serializer'
 
 class DiscourseChat::ChannelSerializer < ApplicationSerializer
diff --git a/app/serializers/rule_serializer.rb b/app/serializers/rule_serializer.rb
index 1ad6715..6ace3c5 100644
--- a/app/serializers/rule_serializer.rb
+++ b/app/serializers/rule_serializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class DiscourseChat::RuleSerializer < ApplicationSerializer
   attributes :id, :channel_id, :type, :group_id, :group_name, :category_id, :tags, :filter
 
diff --git a/app/services/manager.rb b/app/services/manager.rb
index 9b72414..dd52a1b 100644
--- a/app/services/manager.rb
+++ b/app/services/manager.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Manager
 
diff --git a/bin/pull_translations.rb b/bin/pull_translations.rb
index 755a227..789ccaa 100755
--- a/bin/pull_translations.rb
+++ b/bin/pull_translations.rb
@@ -1,4 +1,5 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
 # Usage:
 #   bundle install
diff --git a/lib/discourse_chat/provider.rb b/lib/discourse_chat/provider.rb
index 84cffdc..a69ed6d 100644
--- a/lib/discourse_chat/provider.rb
+++ b/lib/discourse_chat/provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   class ProviderError < StandardError
     attr_accessor :info
@@ -35,7 +37,7 @@ module DiscourseChat
 
     def self.is_enabled(provider)
       if defined? provider::PROVIDER_ENABLED_SETTING
-        SiteSetting.send(provider::PROVIDER_ENABLED_SETTING)
+        SiteSetting.get(provider::PROVIDER_ENABLED_SETTING)
       else
         false
       end
diff --git a/lib/discourse_chat/provider/discord/discord_provider.rb b/lib/discourse_chat/provider/discord/discord_provider.rb
index 94faebc..7c86d0f 100644
--- a/lib/discourse_chat/provider/discord/discord_provider.rb
+++ b/lib/discourse_chat/provider/discord/discord_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module DiscordProvider
diff --git a/lib/discourse_chat/provider/flowdock/flowdock_provider.rb b/lib/discourse_chat/provider/flowdock/flowdock_provider.rb
index 765eb4d..677fe7a 100644
--- a/lib/discourse_chat/provider/flowdock/flowdock_provider.rb
+++ b/lib/discourse_chat/provider/flowdock/flowdock_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::FlowdockProvider
 
   PROVIDER_NAME = "flowdock".freeze
diff --git a/lib/discourse_chat/provider/gitter/gitter_provider.rb b/lib/discourse_chat/provider/gitter/gitter_provider.rb
index b5405c4..b1e0d3a 100644
--- a/lib/discourse_chat/provider/gitter/gitter_provider.rb
+++ b/lib/discourse_chat/provider/gitter/gitter_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module GitterProvider
diff --git a/lib/discourse_chat/provider/matrix/matrix_provider.rb b/lib/discourse_chat/provider/matrix/matrix_provider.rb
index b2ddbe7..291869b 100644
--- a/lib/discourse_chat/provider/matrix/matrix_provider.rb
+++ b/lib/discourse_chat/provider/matrix/matrix_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module MatrixProvider
diff --git a/lib/discourse_chat/provider/mattermost/mattermost_command_controller.rb b/lib/discourse_chat/provider/mattermost/mattermost_command_controller.rb
index 5c102b5..78ccb8b 100644
--- a/lib/discourse_chat/provider/mattermost/mattermost_command_controller.rb
+++ b/lib/discourse_chat/provider/mattermost/mattermost_command_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::MattermostProvider
   class MattermostCommandController < DiscourseChat::Provider::HookController
     requires_provider ::DiscourseChat::Provider::MattermostProvider::PROVIDER_NAME
diff --git a/lib/discourse_chat/provider/mattermost/mattermost_provider.rb b/lib/discourse_chat/provider/mattermost/mattermost_provider.rb
index fb86db7..42c7eab 100644
--- a/lib/discourse_chat/provider/mattermost/mattermost_provider.rb
+++ b/lib/discourse_chat/provider/mattermost/mattermost_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module MattermostProvider
diff --git a/lib/discourse_chat/provider/rocketchat/rocketchat_provider.rb b/lib/discourse_chat/provider/rocketchat/rocketchat_provider.rb
index f99c014..b854a8e 100644
--- a/lib/discourse_chat/provider/rocketchat/rocketchat_provider.rb
+++ b/lib/discourse_chat/provider/rocketchat/rocketchat_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::RocketchatProvider
   PROVIDER_NAME = "rocketchat".freeze
 
diff --git a/lib/discourse_chat/provider/slack/slack_command_controller.rb b/lib/discourse_chat/provider/slack/slack_command_controller.rb
index a504359..edecda7 100644
--- a/lib/discourse_chat/provider/slack/slack_command_controller.rb
+++ b/lib/discourse_chat/provider/slack/slack_command_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::SlackProvider
   class SlackCommandController < DiscourseChat::Provider::HookController
     requires_provider ::DiscourseChat::Provider::SlackProvider::PROVIDER_NAME
diff --git a/lib/discourse_chat/provider/slack/slack_enabled_setting_validator.rb b/lib/discourse_chat/provider/slack/slack_enabled_setting_validator.rb
index 1d0c5de..fd6ccc3 100644
--- a/lib/discourse_chat/provider/slack/slack_enabled_setting_validator.rb
+++ b/lib/discourse_chat/provider/slack/slack_enabled_setting_validator.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ChatIntegrationSlackEnabledSettingValidator
   def initialize(opts = {})
     @opts = opts
diff --git a/lib/discourse_chat/provider/slack/slack_message.rb b/lib/discourse_chat/provider/slack/slack_message.rb
index a5ca70e..031c890 100644
--- a/lib/discourse_chat/provider/slack/slack_message.rb
+++ b/lib/discourse_chat/provider/slack/slack_message.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::SlackProvider
   class SlackMessage
     def initialize(raw_message, transcript)
diff --git a/lib/discourse_chat/provider/slack/slack_message_formatter.rb b/lib/discourse_chat/provider/slack/slack_message_formatter.rb
index 2277c65..1b0d29d 100644
--- a/lib/discourse_chat/provider/slack/slack_message_formatter.rb
+++ b/lib/discourse_chat/provider/slack/slack_message_formatter.rb
@@ -1,9 +1,11 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::SlackProvider
   class SlackMessageFormatter < Nokogiri::XML::SAX::Document
     attr_reader :excerpt
 
     def initialize
-      @excerpt = ""
+      @excerpt = +""
     end
 
     def self.format(html = '')
diff --git a/lib/discourse_chat/provider/slack/slack_provider.rb b/lib/discourse_chat/provider/slack/slack_provider.rb
index 7cc6727..ee672a3 100644
--- a/lib/discourse_chat/provider/slack/slack_provider.rb
+++ b/lib/discourse_chat/provider/slack/slack_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::SlackProvider
   PROVIDER_NAME = "slack".freeze
 
diff --git a/lib/discourse_chat/provider/slack/slack_transcript.rb b/lib/discourse_chat/provider/slack/slack_transcript.rb
index a89c922..6c86749 100644
--- a/lib/discourse_chat/provider/slack/slack_transcript.rb
+++ b/lib/discourse_chat/provider/slack/slack_transcript.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::SlackProvider
   class SlackTranscript
     attr_reader :users, :channel_id, :messages
@@ -77,7 +79,7 @@ module DiscourseChat::Provider::SlackProvider
     end
 
     def build_transcript
-      post_content = "[quote]\n"
+      post_content = +"[quote]\n"
       post_content << "[**#{I18n.t('chat_integration.provider.slack.transcript.view_on_slack', name: @channel_name)}**](#{first_message.url})\n"
 
       all_avatars = {}
diff --git a/lib/discourse_chat/provider/telegram/telegram_command_controller.rb b/lib/discourse_chat/provider/telegram/telegram_command_controller.rb
index 7fb41de..faef0c7 100644
--- a/lib/discourse_chat/provider/telegram/telegram_command_controller.rb
+++ b/lib/discourse_chat/provider/telegram/telegram_command_controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat::Provider::TelegramProvider
   class TelegramCommandController < DiscourseChat::Provider::HookController
     requires_provider ::DiscourseChat::Provider::TelegramProvider::PROVIDER_NAME
diff --git a/lib/discourse_chat/provider/telegram/telegram_initializer.rb b/lib/discourse_chat/provider/telegram/telegram_initializer.rb
index 15fa49b..6360147 100644
--- a/lib/discourse_chat/provider/telegram/telegram_initializer.rb
+++ b/lib/discourse_chat/provider/telegram/telegram_initializer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 DiscourseEvent.on(:site_setting_saved) do |sitesetting|
   isEnabledSetting = sitesetting.name == 'chat_integration_telegram_enabled'
   isAccessToken =  sitesetting.name == 'chat_integration_telegram_access_token'
diff --git a/lib/discourse_chat/provider/telegram/telegram_provider.rb b/lib/discourse_chat/provider/telegram/telegram_provider.rb
index 9d5afd1..32a0fc6 100644
--- a/lib/discourse_chat/provider/telegram/telegram_provider.rb
+++ b/lib/discourse_chat/provider/telegram/telegram_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module TelegramProvider
diff --git a/lib/discourse_chat/provider/zulip/zulip_provider.rb b/lib/discourse_chat/provider/zulip/zulip_provider.rb
index c6a7646..95515f5 100644
--- a/lib/discourse_chat/provider/zulip/zulip_provider.rb
+++ b/lib/discourse_chat/provider/zulip/zulip_provider.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module DiscourseChat
   module Provider
     module ZulipProvider
diff --git a/plugin.rb b/plugin.rb
index a5de6f6..664d211 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # name: discourse-chat-integration
 # about: This plugin integrates discourse with a number of chat providers
 # version: 0.1
diff --git a/spec/dummy_provider.rb b/spec/dummy_provider.rb
index a4d0fec..67aecea 100644
--- a/spec/dummy_provider.rb
+++ b/spec/dummy_provider.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 
 RSpec.shared_context "dummy provider" do
   before(:each) do
diff --git a/spec/helpers/helper_spec.rb b/spec/helpers/helper_spec.rb
index ebc1795..0750200 100644
--- a/spec/helpers/helper_spec.rb
+++ b/spec/helpers/helper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 require_relative '../dummy_provider'
 
diff --git a/spec/jobs/onceoff/migrate_from_slack_official_spec.rb b/spec/jobs/onceoff/migrate_from_slack_official_spec.rb
index 534b7ea..9da4cd0 100644
--- a/spec/jobs/onceoff/migrate_from_slack_official_spec.rb
+++ b/spec/jobs/onceoff/migrate_from_slack_official_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe Jobs::DiscourseChatMigrateFromSlackOfficial do
diff --git a/spec/jobs/regular/notify_chats_spec.rb b/spec/jobs/regular/notify_chats_spec.rb
index bbc2e6b..8063937 100644
--- a/spec/jobs/regular/notify_chats_spec.rb
+++ b/spec/jobs/regular/notify_chats_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe PostCreator do
diff --git a/spec/lib/discourse_chat/provider/discord/discord_provider_spec.rb b/spec/lib/discourse_chat/provider/discord/discord_provider_spec.rb
index 3ec86f8..5854648 100644
--- a/spec/lib/discourse_chat/provider/discord/discord_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/discord/discord_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::DiscordProvider do
diff --git a/spec/lib/discourse_chat/provider/flowdock/flowdock_provider_spec.rb b/spec/lib/discourse_chat/provider/flowdock/flowdock_provider_spec.rb
index fbba268..4eec7aa 100644
--- a/spec/lib/discourse_chat/provider/flowdock/flowdock_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/flowdock/flowdock_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::FlowdockProvider do
diff --git a/spec/lib/discourse_chat/provider/gitter/gitter_provider_spec.rb b/spec/lib/discourse_chat/provider/gitter/gitter_provider_spec.rb
index 665b4cf..4b821b3 100644
--- a/spec/lib/discourse_chat/provider/gitter/gitter_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/gitter/gitter_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::GitterProvider do
diff --git a/spec/lib/discourse_chat/provider/matrix/matrix_provider_spec.rb b/spec/lib/discourse_chat/provider/matrix/matrix_provider_spec.rb
index ebfcfba..1bcee40 100644
--- a/spec/lib/discourse_chat/provider/matrix/matrix_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/matrix/matrix_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::MatrixProvider do
diff --git a/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb b/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
index 06a8d32..075bd73 100644
--- a/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/mattermost/mattermost_command_controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe 'Mattermost Command Controller', type: :request do
diff --git a/spec/lib/discourse_chat/provider/mattermost/mattermost_provider_spec.rb b/spec/lib/discourse_chat/provider/mattermost/mattermost_provider_spec.rb
index c485ffa..cb4f525 100644
--- a/spec/lib/discourse_chat/provider/mattermost/mattermost_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/mattermost/mattermost_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::MattermostProvider do
diff --git a/spec/lib/discourse_chat/provider/rocketchat/rocketchat_provider_spec.rb b/spec/lib/discourse_chat/provider/rocketchat/rocketchat_provider_spec.rb
index fc3d831..284c662 100644
--- a/spec/lib/discourse_chat/provider/rocketchat/rocketchat_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/rocketchat/rocketchat_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::RocketchatProvider do
diff --git a/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
index 25d9523..0461af6 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_command_controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe 'Slack Command Controller', type: :request do
diff --git a/spec/lib/discourse_chat/provider/slack/slack_message_formatter_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_message_formatter_spec.rb
index 44d8ffe..47c3eaa 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_message_formatter_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_message_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::SlackProvider::SlackMessageFormatter do
diff --git a/spec/lib/discourse_chat/provider/slack/slack_provider_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_provider_spec.rb
index ddd8e9d..843f8da 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::SlackProvider do
diff --git a/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb b/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
index 731c648..67b55b1 100644
--- a/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
+++ b/spec/lib/discourse_chat/provider/slack/slack_transcript_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::SlackProvider::SlackTranscript do
diff --git a/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb b/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
index 6a1f6d7..d636efd 100644
--- a/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
+++ b/spec/lib/discourse_chat/provider/telegram/telegram_command_controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe 'Telegram Command Controller', type: :request do
diff --git a/spec/lib/discourse_chat/provider/telegram/telegram_provider_spec.rb b/spec/lib/discourse_chat/provider/telegram/telegram_provider_spec.rb
index 772389e..232bfa8 100644
--- a/spec/lib/discourse_chat/provider/telegram/telegram_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/telegram/telegram_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::TelegramProvider do
diff --git a/spec/lib/discourse_chat/provider/zulip/zulip_provider_spec.rb b/spec/lib/discourse_chat/provider/zulip/zulip_provider_spec.rb
index 4d3fd1d..3738b35 100644
--- a/spec/lib/discourse_chat/provider/zulip/zulip_provider_spec.rb
+++ b/spec/lib/discourse_chat/provider/zulip/zulip_provider_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 RSpec.describe DiscourseChat::Provider::ZulipProvider do
diff --git a/spec/models/channel_spec.rb b/spec/models/channel_spec.rb
index 8179ff5..8ddfeed 100644
--- a/spec/models/channel_spec.rb
+++ b/spec/models/channel_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 require_relative '../dummy_provider'
 
diff --git a/spec/models/rule_spec.rb b/spec/models/rule_spec.rb
index ba9f2ef..4dd5614 100644
--- a/spec/models/rule_spec.rb
+++ b/spec/models/rule_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 require_relative '../dummy_provider'
 
diff --git a/spec/requests/chat_controller_spec.rb b/spec/requests/chat_controller_spec.rb
index 64e110e..69f5fd4 100644
--- a/spec/requests/chat_controller_spec.rb
+++ b/spec/requests/chat_controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 require_relative '../dummy_provider'
 
diff --git a/spec/requests/public_controller_spec.rb b/spec/requests/public_controller_spec.rb
index 92b45c1..8fe9bf1 100644
--- a/spec/requests/public_controller_spec.rb
+++ b/spec/requests/public_controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 
 describe 'Public Controller', type: :request do
diff --git a/spec/services/manager_spec.rb b/spec/services/manager_spec.rb
index 23a4e2f..3806fef 100644
--- a/spec/services/manager_spec.rb
+++ b/spec/services/manager_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rails_helper'
 require_dependency 'post_creator'
 require_relative '../dummy_provider'