Maintenance: Treat Ruby deprecation warnings as test errors.

app/controllers/form_controller.rb

@@ -146,7 +146,7 @@ class FormController < ApplicationController
 
   # we don't wann to tell what the cause for the authorization error is
   # so we capture the exception and raise an anonymized one
-  def authorize!(*)
+  def authorize!(...)
     super
   rescue Pundit::NotAuthorizedError
     raise Exceptions::Forbidden

app/controllers/tickets_controller.rb

@@ -95,8 +95,9 @@ class TicketsController < ApplicationController
       clean_params[:customer_id] = current_user.id
     end
 
-    # try to create customer if needed
+    # The parameter :customer_id is 'abused' in cases where it is not an integer, but a string like
-    if clean_params[:customer_id].present? && clean_params[:customer_id] =~ %r{^guess:(.+?)$}
+    #   'guess:customers.email@domain.com' which implies that the customer should be looked up.
+    if clean_params[:customer_id].is_a?(String) && clean_params[:customer_id] =~ %r{^guess:(.+?)$}
       email_address = $1
       email_address_validation = EmailAddressValidation.new(email_address)
       if !email_address_validation.valid_format?

app/jobs/application_job/has_custom_logging.rb

@@ -13,7 +13,7 @@ class ApplicationJob
     class LogSubscriber < ActiveJob::Logging::LogSubscriber
 
       # ATTENTION: Uncomment this line to enable info logging again
-      def info(*); end
+      def info(...); end
 
       def enqueue(event)
         super if job_enqueued?(event)

app/models/application_model/can_creates_and_updates.rb

@@ -41,7 +41,7 @@ returns
 
       raise ArgumentError, 'Need name, login, email or locale for create_or_update()' if attr.nil?
 
-      record = case_sensitive_find_by(data.slice(attr))
+      record = case_sensitive_find_by(**data.slice(attr))
       record.nil? ? create(data) : record.tap { |r| r.update(data) }
     end
 

app/models/channel/driver/null.rb

@@ -5,7 +5,7 @@ class Channel::Driver::Null
     false
   end
 
-  def fetch(*)
+  def fetch(...)
     {
       result:  'ok',
       fetched: 0,

app/models/concerns/can_csv_import.rb

@@ -59,7 +59,7 @@ returns
         raise Exceptions::UnprocessableEntity, "Unable to read file '#{data[:file]}': #{e.inspect}"
       end
 
-      header, *rows = ::CSV.parse(data[:string], data[:parse_params])
+      header, *rows = ::CSV.parse(data[:string], **data[:parse_params])
 
       header&.each do |column|
         column.try(:strip!)
@@ -117,7 +117,7 @@ returns
           record = (lookup_keys & attributes.keys).lazy.map do |lookup_key|
             params = attributes.slice(lookup_key)
             params.transform_values!(&:downcase) if lookup_key.in?(%i[email login])
-            lookup(params)
+            lookup(**params)
           end.detect(&:present?)
 
           if record&.in?(records)
@@ -296,7 +296,7 @@ returns
         end
         rows_to_add = []
       end
-      ::CSV.generate(params) do |csv|
+      ::CSV.generate(**params) do |csv|
         csv << header
         rows.each do |row|
           csv << row

app/models/object_manager/attribute/validation/backend.rb

@@ -1,8 +1,8 @@
 # Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/
 
 class ObjectManager::Attribute::Validation::Backend
-  def self.validate(*args)
+  def self.validate(...)
-    new(*args).validate
+    new(...).validate
   end
 
   attr_reader :record, :attribute, :value, :previous_value

lib/core_ext/active_record/connection_adapters/postgresql/schema_statements.rb

@@ -9,7 +9,7 @@ module ActiveRecord
 
         # on postgres create lower indices to support case-insensitive where conditions
         def add_index(table_name, column_name, options = {}) #:nodoc:
-          index_name, index_type, index_columns, index_options, index_algorithm, index_using = add_index_options(table_name, column_name, options)
+          index_name, index_type, index_columns, index_options, index_algorithm, index_using = add_index_options(table_name, column_name, **options)
 
           column_names = index_columns.split ', '
           if column_names.instance_of?(Array)

lib/core_ext/string.rb

@@ -470,8 +470,8 @@ class String
   #     * `:output_to_binary` returns an ASCII-8BIT-encoded string.
   #     * `:read_as_sanitized_binary` returns a UTF-8-encoded string with all
   #       invalid byte sequences replaced with "?" characters.
-  def utf8_encode(**options)
+  def utf8_encode(...)
-    dup.utf8_encode!(options)
+    dup.utf8_encode!(...)
   end
 
   def utf8_encode!(**options)

lib/search_index_backend.rb

@@ -946,7 +946,7 @@ helper method for making HTTP calls and raising error if response was not succes
 =end
 
   def self.make_request_and_validate(url, **args)
-    response = make_request(url, args)
+    response = make_request(url, **args)
 
     return true if response.success?
 

lib/sequencer.rb

@@ -20,8 +20,8 @@ class Sequencer
   #  )
   #
   # @return [Hash{Symbol => Object}] the final result state attributes and values
-  def self.process(sequence, *args)
+  def self.process(sequence, **args)
-    new(sequence, *args).process
+    new(sequence, **args).process
   end
 
   # Provides the log level definition for the requested Sequencer component.

lib/sequencer/unit/import/freshdesk/request/conversation.rb

@@ -8,7 +8,7 @@ class Sequencer
           class Conversation < Sequencer::Unit::Import::Freshdesk::Request::Generic
             attr_reader :ticket
 
-            def initialize(*)
+            def initialize(...)
               super
               @ticket = request_params.delete(:ticket)
             end

lib/sequencer/unit/import/freshdesk/request/time_entry.rb

@@ -8,7 +8,7 @@ class Sequencer
           class TimeEntry < Sequencer::Unit::Import::Freshdesk::Request::Generic
             attr_reader :ticket
 
-            def initialize(*)
+            def initialize(...)
               super
               @ticket = request_params.delete(:ticket)
             end

spec/lib/ldap_spec.rb

@@ -263,7 +263,7 @@ RSpec.describe Ldap do
         allow(mocked_ldap).to receive(:search).with(include(expected)).and_yield(yield_entry).and_return(true)
 
         check_entry = nil
-        instance.search(filter, additional) { |entry| check_entry = entry }
+        instance.search(filter, **additional) { |entry| check_entry = entry }
         expect(check_entry).to eq(yield_entry)
       end
 
@@ -283,7 +283,7 @@ RSpec.describe Ldap do
         allow(mocked_ldap).to receive(:search).with(include(expected)).and_yield(yield_entry).and_return(true)
 
         check_entry = nil
-        instance.search(filter, additional) { |entry| check_entry = entry }
+        instance.search(filter, **additional) { |entry| check_entry = entry }
         expect(check_entry).to eq(yield_entry)
       end
 

spec/models/application_model/can_lookup_examples.rb

@@ -93,7 +93,7 @@ RSpec.shared_examples 'ApplicationModel::CanLookup' do
                   expect { instance.update(attribute => new_attribute_val) }
                     .to change { described_class.cache_get(old_attribute_val) }.to(nil)
 
-                  expect { described_class.lookup({ attribute => instance.send(attribute) }) }
+                  expect { described_class.lookup(attribute => instance.send(attribute)) }
                     .to change { described_class.cache_get(new_attribute_val) }.to(instance)
                 end
               end

spec/models/channel_spec.rb

@@ -23,11 +23,11 @@ RSpec.describe Channel, type: :model do
 
       let(:failing_adapter_class) do
         Class.new(Channel::Driver::Null) do
-          def fetchable?(*)
+          def fetchable?(...)
             true
           end
 
-          def fetch(*)
+          def fetch(...)
             raise 'some error'
           end
         end
@@ -35,7 +35,7 @@ RSpec.describe Channel, type: :model do
 
       let(:dummy_adapter_class) do
         Class.new(Channel::Driver::Null) do
-          def fetchable?(*)
+          def fetchable?(...)
             true
           end
         end

spec/support/capybara/authenticated.rb

@@ -18,6 +18,6 @@ RSpec.configure do |config|
     authenticated = example.metadata.fetch(:authenticated_as, true)
     credentials   = authenticated_as_get_user(authenticated, return_type: :credentials)
 
-    login(credentials) if credentials
+    login(**credentials) if credentials
   end
 end

spec/support/capybara/custom_extensions.rb

@@ -36,43 +36,43 @@ class Capybara::Node::Element
 end
 
 module ZammadCapybarActionDelegator
-  def select(*)
+  def select(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def click(*)
+  def click(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def click_on(*)
+  def click_on(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def click_link_or_button(*)
+  def click_link_or_button(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def click_button(*)
+  def click_button(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def select_option(*)
+  def select_option(...)
     super.tap do
       await_empty_ajax_queue
     end
   end
 
-  def send_keys(*)
+  def send_keys(...)
     super.tap do
       await_empty_ajax_queue
     end
@@ -80,31 +80,31 @@ module ZammadCapybarActionDelegator
 end
 
 module ZammadCapybarSelectorDelegator
-  def find_field(*)
+  def find_field(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def find_button(*)
+  def find_button(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def find_by_id(*)
+  def find_by_id(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def find_link(*)
+  def find_link(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def find(*)
+  def find(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def first(*)
+  def first(...)
     ZammadCapybaraElementDelegator.new(element: super, context: self)
   end
 
-  def all(*)
+  def all(...)
     super.map { |element| ZammadCapybaraElementDelegator.new(element: element, context: self) }
   end
 end
@@ -131,7 +131,7 @@ module CapybaraCustomExtensions
   include ZammadCapybarActionDelegator
   include ZammadCapybarSelectorDelegator
 
-  def page(*)
+  def page(...)
     ZammadCapybaraSessionDelegator.new(element: super, context: self)
   end
 end

spec/support/capybara/driven_by.rb

@@ -11,7 +11,7 @@ RSpec.configure do |config|
       Setting.set('fqdn', "#{host}:#{port}")
 
       # start a silenced Puma as application server
-      Capybara.servers[:puma].call(app, port, host, { Silent: true, Host: '0.0.0.0', Threads: '0:16' })
+      Capybara.servers[:puma].call(app, port, host, Silent: true, Host: '0.0.0.0', Threads: '0:16')
     end
     Capybara.server = :puma_wrapper
 

spec/support/capybara/selenium_driver.rb

@@ -29,7 +29,7 @@ Capybara.register_driver(:zammad_chrome) do |app|
     options[:url]     = ENV['REMOTE_URL']
   end
 
-  Capybara::Selenium::Driver.new(app, options)
+  Capybara::Selenium::Driver.new(app, **options)
 end
 
 Capybara.register_driver(:zammad_firefox) do |app|
@@ -54,5 +54,5 @@ Capybara.register_driver(:zammad_firefox) do |app|
     options[:url]     = ENV['REMOTE_URL']
   end
 
-  Capybara::Selenium::Driver.new(app, options)
+  Capybara::Selenium::Driver.new(app, **options)
 end

spec/support/db_migration.rb

@@ -117,7 +117,7 @@ module DbMigrationHelper
   #  remove_foreign_key(:online_notifications, :users)
   #
   # @return [nil]
-  def respond_to_missing?(*)
+  def respond_to_missing?(...)
     true
   end
 

spec/support/deprecation_toolkit.rb

@@ -3,4 +3,14 @@
 require 'deprecation_toolkit/rspec'
 
 DeprecationToolkit::Configuration.test_runner = :rspec
-# DeprecationToolkit::Configuration.warnings_treated_as_deprecation = [ %r{deprecat}i ]
+
+# Treat Ruby deprecation warnings as errors.
+DeprecationToolkit::Configuration.warnings_treated_as_deprecation = [ %r{deprecat}i ]
+
+# Ignore deprecation warnings from dependencies.
+DeprecationToolkit::Configuration.allowed_deprecations = [
+  lambda do |_message, stack|
+    path = stack.first.absolute_path.to_s
+    path.include?('/ruby/') || path.include?('/gems/')
+  end
+]