applies new string literal convention in activejob/test

The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.

47 files changed, 279 insertions, 279 deletions

diff --git a/activejob/test/adapters/backburner.rb b/activejob/test/adapters/backburner.rb
index 65d05f850b..0bd4aad5d3 100644
--- a/activejob/test/adapters/backburner.rb
+++ b/activejob/test/adapters/backburner.rb
@@ -1,3 +1,3 @@
-require 'support/backburner/inline'
+require "support/backburner/inline"
 
 ActiveJob::Base.queue_adapter = :backburner
\ No newline at end of file
diff --git a/activejob/test/adapters/qu.rb b/activejob/test/adapters/qu.rb
index 7728c843b4..b89c504091 100644
--- a/activejob/test/adapters/qu.rb
+++ b/activejob/test/adapters/qu.rb
@@ -1,3 +1,3 @@
-require 'qu-immediate'
+require "qu-immediate"
 
 ActiveJob::Base.queue_adapter = :qu
diff --git a/activejob/test/adapters/que.rb b/activejob/test/adapters/que.rb
index e6abc57457..0c49274a4e 100644
--- a/activejob/test/adapters/que.rb
+++ b/activejob/test/adapters/que.rb
@@ -1,4 +1,4 @@
-require 'support/que/inline'
+require "support/que/inline"
 
 ActiveJob::Base.queue_adapter = :que
 Que.mode = :sync
diff --git a/activejob/test/adapters/queue_classic.rb b/activejob/test/adapters/queue_classic.rb
index ad5ced3cc2..e301a7ca96 100644
--- a/activejob/test/adapters/queue_classic.rb
+++ b/activejob/test/adapters/queue_classic.rb
@@ -1,2 +1,2 @@
-require 'support/queue_classic/inline'
+require "support/queue_classic/inline"
 ActiveJob::Base.queue_adapter = :queue_classic
diff --git a/activejob/test/adapters/sidekiq.rb b/activejob/test/adapters/sidekiq.rb
index cd9d2034de..8036331ef1 100644
--- a/activejob/test/adapters/sidekiq.rb
+++ b/activejob/test/adapters/sidekiq.rb
@@ -1,2 +1,2 @@
-require 'sidekiq/testing/inline'
+require "sidekiq/testing/inline"
 ActiveJob::Base.queue_adapter = :sidekiq
diff --git a/activejob/test/adapters/sneakers.rb b/activejob/test/adapters/sneakers.rb
index 204166a700..159c0d1906 100644
--- a/activejob/test/adapters/sneakers.rb
+++ b/activejob/test/adapters/sneakers.rb
@@ -1,2 +1,2 @@
-require 'support/sneakers/inline'
+require "support/sneakers/inline"
 ActiveJob::Base.queue_adapter = :sneakers
diff --git a/activejob/test/adapters/sucker_punch.rb b/activejob/test/adapters/sucker_punch.rb
index d2d1712946..5661b6ee92 100644
--- a/activejob/test/adapters/sucker_punch.rb
+++ b/activejob/test/adapters/sucker_punch.rb
@@ -1,2 +1,2 @@
-require 'sucker_punch/testing/inline'
+require "sucker_punch/testing/inline"
 ActiveJob::Base.queue_adapter = :sucker_punch
diff --git a/activejob/test/cases/adapter_test.rb b/activejob/test/cases/adapter_test.rb
index 6d75ae9a7c..caf5d44a5e 100644
--- a/activejob/test/cases/adapter_test.rb
+++ b/activejob/test/cases/adapter_test.rb
@@ -1,4 +1,4 @@
-require 'helper'
+require "helper"
 
 class AdapterTest < ActiveSupport::TestCase
   test "should load #{ENV['AJ_ADAPTER']} adapter" do
diff --git a/activejob/test/cases/argument_serialization_test.rb b/activejob/test/cases/argument_serialization_test.rb
index 75b06ebde4..af3d4f2a8e 100644
--- a/activejob/test/cases/argument_serialization_test.rb
+++ b/activejob/test/cases/argument_serialization_test.rb
@@ -1,25 +1,25 @@
-require 'helper'
-require 'active_job/arguments'
-require 'models/person'
-require 'active_support/core_ext/hash/indifferent_access'
-require 'jobs/kwargs_job'
+require "helper"
+require "active_job/arguments"
+require "models/person"
+require "active_support/core_ext/hash/indifferent_access"
+require "jobs/kwargs_job"
 
 class ArgumentSerializationTest < ActiveSupport::TestCase
   setup do
-    @person = Person.find('5')
+    @person = Person.find("5")
   end
 
   [ nil, 1, 1.0, 1_000_000_000_000_000_000_000,
-    'a', true, false, BigDecimal.new(5),
-    [ 1, 'a' ],
-    { 'a' => 1 }
+    "a", true, false, BigDecimal.new(5),
+    [ 1, "a" ],
+    { "a" => 1 }
   ].each do |arg|
     test "serializes #{arg.class} - #{arg} verbatim" do
       assert_arguments_unchanged arg
     end
   end
 
-  [ :a, Object.new, self, Person.find('5').to_gid ].each do |arg|
+  [ :a, Object.new, self, Person.find("5").to_gid ].each do |arg|
     test "does not serialize #{arg.class}" do
       assert_raises ActiveJob::SerializationError do
         ActiveJob::Arguments.serialize [ arg ]
@@ -31,22 +31,22 @@ class ArgumentSerializationTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should convert records to Global IDs' do
+  test "should convert records to Global IDs" do
     assert_arguments_roundtrip [@person]
   end
 
-  test 'should dive deep into arrays and hashes' do
+  test "should dive deep into arrays and hashes" do
     assert_arguments_roundtrip [3, [@person]]
-    assert_arguments_roundtrip [{ 'a' => @person }]
+    assert_arguments_roundtrip [{ "a" => @person }]
   end
 
-  test 'should maintain string and symbol keys' do
+  test "should maintain string and symbol keys" do
     assert_arguments_roundtrip([a: 1, "b" => 2])
   end
 
-  test 'should maintain hash with indifferent access' do
+  test "should maintain hash with indifferent access" do
     symbol_key = { a: 1 }
-    string_key = { 'a' => 1 }
+    string_key = { "a" => 1 }
     indifferent_access = { a: 1 }.with_indifferent_access
 
     assert_not_instance_of ActiveSupport::HashWithIndifferentAccess, perform_round_trip([symbol_key]).first
@@ -54,7 +54,7 @@ class ArgumentSerializationTest < ActiveSupport::TestCase
     assert_instance_of ActiveSupport::HashWithIndifferentAccess, perform_round_trip([indifferent_access]).first
   end
 
-  test 'should disallow non-string/symbol hash keys' do
+  test "should disallow non-string/symbol hash keys" do
     assert_raises ActiveJob::SerializationError do
       ActiveJob::Arguments.serialize [ { 1 => 2 } ]
     end
@@ -64,16 +64,16 @@ class ArgumentSerializationTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should not allow reserved hash keys' do
-    ['_aj_globalid', :_aj_globalid, '_aj_symbol_keys', :_aj_symbol_keys,
-     '_aj_hash_with_indifferent_access', :_aj_hash_with_indifferent_access].each do |key|
+  test "should not allow reserved hash keys" do
+    ["_aj_globalid", :_aj_globalid, "_aj_symbol_keys", :_aj_symbol_keys,
+     "_aj_hash_with_indifferent_access", :_aj_hash_with_indifferent_access].each do |key|
       assert_raises ActiveJob::SerializationError do
         ActiveJob::Arguments.serialize [key => 1]
       end
     end
   end
 
-  test 'should not allow non-primitive objects' do
+  test "should not allow non-primitive objects" do
     assert_raises ActiveJob::SerializationError do
       ActiveJob::Arguments.serialize [Object.new]
     end
@@ -83,17 +83,17 @@ class ArgumentSerializationTest < ActiveSupport::TestCase
     end
   end
 
-  test 'allows for keyword arguments' do
+  test "allows for keyword arguments" do
     KwargsJob.perform_later(argument: 2)
 
     assert_equal "Job with argument: 2", JobBuffer.last_value
   end
 
-  test 'raises a friendly SerializationError for records without ids' do
+  test "raises a friendly SerializationError for records without ids" do
     err = assert_raises ActiveJob::SerializationError do
       ActiveJob::Arguments.serialize [Person.new(nil)]
     end
-    assert_match 'Unable to serialize Person without an id.', err.message
+    assert_match "Unable to serialize Person without an id.", err.message
   end
 
   private
diff --git a/activejob/test/cases/callbacks_test.rb b/activejob/test/cases/callbacks_test.rb
index 9af2380767..8d1c9c3058 100644
--- a/activejob/test/cases/callbacks_test.rb
+++ b/activejob/test/cases/callbacks_test.rb
@@ -1,10 +1,10 @@
-require 'helper'
-require 'jobs/callback_job'
+require "helper"
+require "jobs/callback_job"
 
-require 'active_support/core_ext/object/inclusion'
+require "active_support/core_ext/object/inclusion"
 
 class CallbacksTest < ActiveSupport::TestCase
-  test 'perform callbacks' do
+  test "perform callbacks" do
     performed_callback_job = CallbackJob.new("A-JOB-ID")
     performed_callback_job.perform_now
     assert "CallbackJob ran before_perform".in? performed_callback_job.history
@@ -13,7 +13,7 @@ class CallbacksTest < ActiveSupport::TestCase
     assert "CallbackJob ran around_perform_stop".in? performed_callback_job.history
   end
 
-  test 'enqueue callbacks' do
+  test "enqueue callbacks" do
     enqueued_callback_job = CallbackJob.perform_later
     assert "CallbackJob ran before_enqueue".in? enqueued_callback_job.history
     assert "CallbackJob ran after_enqueue".in? enqueued_callback_job.history
diff --git a/activejob/test/cases/exceptions_test.rb b/activejob/test/cases/exceptions_test.rb
index 58d87a339a..004e9f4305 100644
--- a/activejob/test/cases/exceptions_test.rb
+++ b/activejob/test/cases/exceptions_test.rb
@@ -1,5 +1,5 @@
-require 'helper'
-require 'jobs/retry_job'
+require "helper"
+require "jobs/retry_job"
 
 class ExceptionsTest < ActiveJob::TestCase
   setup do
@@ -9,7 +9,7 @@ class ExceptionsTest < ActiveJob::TestCase
 
   test "successfully retry job throwing exception against defaults" do
     perform_enqueued_jobs do
-      RetryJob.perform_later 'DefaultsError', 5
+      RetryJob.perform_later "DefaultsError", 5
 
       assert_equal [
         "Raised DefaultsError for the 1st time",
@@ -22,7 +22,7 @@ class ExceptionsTest < ActiveJob::TestCase
 
   test "successfully retry job throwing exception against higher limit" do
     perform_enqueued_jobs do
-      RetryJob.perform_later 'ShortWaitTenAttemptsError', 9
+      RetryJob.perform_later "ShortWaitTenAttemptsError", 9
       assert_equal 9, JobBuffer.values.count
     end
   end
@@ -30,7 +30,7 @@ class ExceptionsTest < ActiveJob::TestCase
   test "failed retry job when exception kept occurring against defaults" do
     perform_enqueued_jobs do
       begin
-        RetryJob.perform_later 'DefaultsError', 6
+        RetryJob.perform_later "DefaultsError", 6
         assert_equal "Raised DefaultsError for the 5th time", JobBuffer.last_value
       rescue DefaultsError
         pass
@@ -41,7 +41,7 @@ class ExceptionsTest < ActiveJob::TestCase
   test "failed retry job when exception kept occurring against higher limit" do
     perform_enqueued_jobs do
       begin
-        RetryJob.perform_later 'ShortWaitTenAttemptsError', 11
+        RetryJob.perform_later "ShortWaitTenAttemptsError", 11
         assert_equal "Raised ShortWaitTenAttemptsError for the 10th time", JobBuffer.last_value
       rescue ShortWaitTenAttemptsError
         pass
@@ -51,14 +51,14 @@ class ExceptionsTest < ActiveJob::TestCase
 
   test "discard job" do
     perform_enqueued_jobs do
-      RetryJob.perform_later 'DiscardableError', 2
+      RetryJob.perform_later "DiscardableError", 2
       assert_equal "Raised DiscardableError for the 1st time", JobBuffer.last_value
     end
   end
 
   test "custom handling of job that exceeds retry attempts" do
     perform_enqueued_jobs do
-      RetryJob.perform_later 'CustomCatchError', 6
+      RetryJob.perform_later "CustomCatchError", 6
       assert_equal "Dealt with a job that failed to retry in a custom way", JobBuffer.last_value
     end
   end
@@ -68,7 +68,7 @@ class ExceptionsTest < ActiveJob::TestCase
   
     perform_enqueued_jobs do
       assert_performed_with at: (Time.now + 3600.seconds).to_i do
-        RetryJob.perform_later 'LongWaitError', 5
+        RetryJob.perform_later "LongWaitError", 5
       end
     end
   end
@@ -81,7 +81,7 @@ class ExceptionsTest < ActiveJob::TestCase
       assert_performed_with at: (Time.now + 18.seconds).to_i do
       assert_performed_with at: (Time.now + 83.seconds).to_i do
       assert_performed_with at: (Time.now + 258.seconds).to_i do
-        RetryJob.perform_later 'ExponentialWaitTenAttemptsError', 5
+        RetryJob.perform_later "ExponentialWaitTenAttemptsError", 5
       end
       end
       end
@@ -97,7 +97,7 @@ class ExceptionsTest < ActiveJob::TestCase
       assert_performed_with at: (Time.now + 4.seconds).to_i do
       assert_performed_with at: (Time.now + 6.seconds).to_i do
       assert_performed_with at: (Time.now + 8.seconds).to_i do
-        RetryJob.perform_later 'CustomWaitTenAttemptsError', 5
+        RetryJob.perform_later "CustomWaitTenAttemptsError", 5
       end
       end
       end
diff --git a/activejob/test/cases/job_serialization_test.rb b/activejob/test/cases/job_serialization_test.rb
index fa94209889..3f2e300dfa 100644
--- a/activejob/test/cases/job_serialization_test.rb
+++ b/activejob/test/cases/job_serialization_test.rb
@@ -1,8 +1,8 @@
-require 'helper'
-require 'jobs/gid_job'
-require 'jobs/hello_job'
-require 'models/person'
-require 'json'
+require "helper"
+require "jobs/gid_job"
+require "jobs/hello_job"
+require "models/person"
+require "json"
 
 class JobSerializationTest < ActiveSupport::TestCase
   setup do
@@ -10,16 +10,16 @@ class JobSerializationTest < ActiveSupport::TestCase
     @person = Person.find(5)
   end
 
-  test 'serialize job with gid' do
+  test "serialize job with gid" do
     GidJob.perform_later @person
     assert_equal "Person with ID: 5", JobBuffer.last_value
   end
 
-  test 'serialize includes current locale' do
-    assert_equal 'en', HelloJob.new.serialize['locale']
+  test "serialize includes current locale" do
+    assert_equal "en", HelloJob.new.serialize["locale"]
   end
 
-  test 'serialize and deserialize are symmetric' do
+  test "serialize and deserialize are symmetric" do
     # Round trip a job in memory only
     h1 = HelloJob.new
     h1.deserialize(h1.serialize)
@@ -33,15 +33,15 @@ class JobSerializationTest < ActiveSupport::TestCase
     assert_equal h1.serialize, h2.serialize
   end
 
-  test 'deserialize sets locale' do
+  test "deserialize sets locale" do
     job = HelloJob.new
-    job.deserialize 'locale' => 'es'
-    assert_equal 'es', job.locale
+    job.deserialize "locale" => "es"
+    assert_equal "es", job.locale
   end
 
-  test 'deserialize sets default locale' do
+  test "deserialize sets default locale" do
     job = HelloJob.new
     job.deserialize({})
-    assert_equal 'en', job.locale
+    assert_equal "en", job.locale
   end
 end
diff --git a/activejob/test/cases/logging_test.rb b/activejob/test/cases/logging_test.rb
index bf8a66432a..954974b2a5 100644
--- a/activejob/test/cases/logging_test.rb
+++ b/activejob/test/cases/logging_test.rb
@@ -1,11 +1,11 @@
-require 'helper'
+require "helper"
 require "active_support/log_subscriber/test_helper"
-require 'active_support/core_ext/numeric/time'
-require 'jobs/hello_job'
-require 'jobs/logging_job'
-require 'jobs/overridden_logging_job'
-require 'jobs/nested_job'
-require 'models/person'
+require "active_support/core_ext/numeric/time"
+require "jobs/hello_job"
+require "jobs/logging_job"
+require "jobs/overridden_logging_job"
+require "jobs/nested_job"
+require "models/person"
 
 class LoggingTest < ActiveSupport::TestCase
   include ActiveSupport::LogSubscriber::TestHelper
diff --git a/activejob/test/cases/queue_adapter_test.rb b/activejob/test/cases/queue_adapter_test.rb
index fb3fdc392f..dc862450aa 100644
--- a/activejob/test/cases/queue_adapter_test.rb
+++ b/activejob/test/cases/queue_adapter_test.rb
@@ -1,4 +1,4 @@
-require 'helper'
+require "helper"
 
 module ActiveJob
   module QueueAdapters
@@ -15,15 +15,15 @@ module ActiveJob
 end
 
 class QueueAdapterTest < ActiveJob::TestCase
-  test 'should forbid nonsense arguments' do
+  test "should forbid nonsense arguments" do
     assert_raises(ArgumentError) { ActiveJob::Base.queue_adapter = Mutex }
     assert_raises(ArgumentError) { ActiveJob::Base.queue_adapter = Mutex.new }
   end
 
-  test 'should warn on passing an adapter class' do
+  test "should warn on passing an adapter class" do
     klass = Class.new do
       def self.name
-        'fake'
+        "fake"
       end
 
       def enqueue(*); end
@@ -33,7 +33,7 @@ class QueueAdapterTest < ActiveJob::TestCase
     assert_deprecated { ActiveJob::Base.queue_adapter = klass }
   end
 
-  test 'should allow overriding the queue_adapter at the child class level without affecting the parent or its sibling' do
+  test "should allow overriding the queue_adapter at the child class level without affecting the parent or its sibling" do
     base_queue_adapter = ActiveJob::Base.queue_adapter
 
     child_job_one = Class.new(ActiveJob::Base)
diff --git a/activejob/test/cases/queue_naming_test.rb b/activejob/test/cases/queue_naming_test.rb
index 898016a704..7777e557c9 100644
--- a/activejob/test/cases/queue_naming_test.rb
+++ b/activejob/test/cases/queue_naming_test.rb
@@ -1,14 +1,14 @@
-require 'helper'
-require 'jobs/hello_job'
-require 'jobs/logging_job'
-require 'jobs/nested_job'
+require "helper"
+require "jobs/hello_job"
+require "jobs/logging_job"
+require "jobs/nested_job"
 
 class QueueNamingTest < ActiveSupport::TestCase
-  test 'name derived from base' do
+  test "name derived from base" do
     assert_equal "default", HelloJob.queue_name
   end
 
-  test 'uses given queue name job' do
+  test "uses given queue name job" do
     original_queue_name = HelloJob.queue_name
 
     begin
@@ -19,7 +19,7 @@ class QueueNamingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'allows a blank queue name' do
+  test "allows a blank queue name" do
     original_queue_name = HelloJob.queue_name
 
     begin
@@ -30,7 +30,7 @@ class QueueNamingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'does not use a nil queue name' do
+  test "does not use a nil queue name" do
     original_queue_name = HelloJob.queue_name
 
     begin
@@ -41,7 +41,7 @@ class QueueNamingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'evals block given to queue_as to determine queue' do
+  test "evals block given to queue_as to determine queue" do
     original_queue_name = HelloJob.queue_name
 
     begin
@@ -52,42 +52,42 @@ class QueueNamingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'can use arguments to determine queue_name in queue_as block' do
+  test "can use arguments to determine queue_name in queue_as block" do
     original_queue_name = HelloJob.queue_name
 
     begin
-      HelloJob.queue_as { self.arguments.first=='1' ? :one : :two }
-      assert_equal "one", HelloJob.new('1').queue_name
-      assert_equal "two", HelloJob.new('3').queue_name
+      HelloJob.queue_as { self.arguments.first=="1" ? :one : :two }
+      assert_equal "one", HelloJob.new("1").queue_name
+      assert_equal "two", HelloJob.new("3").queue_name
     ensure
       HelloJob.queue_name = original_queue_name
     end
   end
 
-  test 'queue_name_prefix prepended to the queue name with default delimiter' do
+  test "queue_name_prefix prepended to the queue name with default delimiter" do
     original_queue_name_prefix = ActiveJob::Base.queue_name_prefix
     original_queue_name = HelloJob.queue_name
 
     begin
-      ActiveJob::Base.queue_name_prefix = 'aj'
+      ActiveJob::Base.queue_name_prefix = "aj"
       HelloJob.queue_as :low
-      assert_equal 'aj_low', HelloJob.queue_name
+      assert_equal "aj_low", HelloJob.queue_name
     ensure
       ActiveJob::Base.queue_name_prefix = original_queue_name_prefix
       HelloJob.queue_name = original_queue_name
     end
   end
 
-  test 'queue_name_prefix prepended to the queue name with custom delimiter' do
+  test "queue_name_prefix prepended to the queue name with custom delimiter" do
     original_queue_name_prefix = ActiveJob::Base.queue_name_prefix
     original_queue_name_delimiter = ActiveJob::Base.queue_name_delimiter
     original_queue_name = HelloJob.queue_name
 
     begin
-      ActiveJob::Base.queue_name_delimiter = '.'
-      ActiveJob::Base.queue_name_prefix = 'aj'
+      ActiveJob::Base.queue_name_delimiter = "."
+      ActiveJob::Base.queue_name_prefix = "aj"
       HelloJob.queue_as :low
-      assert_equal 'aj.low', HelloJob.queue_name
+      assert_equal "aj.low", HelloJob.queue_name
     ensure
       ActiveJob::Base.queue_name_prefix = original_queue_name_prefix
       ActiveJob::Base.queue_name_delimiter = original_queue_name_delimiter
@@ -95,7 +95,7 @@ class QueueNamingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'uses queue passed to #set' do
+  test "uses queue passed to #set" do
     job = HelloJob.set(queue: :some_queue).perform_later
     assert_equal "some_queue", job.queue_name
   end
diff --git a/activejob/test/cases/queue_priority_test.rb b/activejob/test/cases/queue_priority_test.rb
index ca17b51dad..ab4a1bdf7b 100644
--- a/activejob/test/cases/queue_priority_test.rb
+++ b/activejob/test/cases/queue_priority_test.rb
@@ -1,12 +1,12 @@
-require 'helper'
-require 'jobs/hello_job'
+require "helper"
+require "jobs/hello_job"
 
 class QueuePriorityTest < ActiveSupport::TestCase
-  test 'priority unset by default' do
+  test "priority unset by default" do
     assert_equal nil, HelloJob.priority
   end
 
-  test 'uses given priority' do
+  test "uses given priority" do
     original_priority = HelloJob.priority
 
     begin
@@ -17,7 +17,7 @@ class QueuePriorityTest < ActiveSupport::TestCase
     end
   end
 
-  test 'evals block given to priority to determine priority' do
+  test "evals block given to priority to determine priority" do
     original_priority = HelloJob.priority
 
     begin
@@ -28,19 +28,19 @@ class QueuePriorityTest < ActiveSupport::TestCase
     end
   end
 
-  test 'can use arguments to determine priority in priority block' do
+  test "can use arguments to determine priority in priority block" do
     original_priority = HelloJob.priority
 
     begin
-      HelloJob.queue_with_priority { self.arguments.first=='1' ? 99 : 11 }
-      assert_equal 99, HelloJob.new('1').priority
-      assert_equal 11, HelloJob.new('3').priority
+      HelloJob.queue_with_priority { self.arguments.first=="1" ? 99 : 11 }
+      assert_equal 99, HelloJob.new("1").priority
+      assert_equal 11, HelloJob.new("3").priority
     ensure
       HelloJob.priority = original_priority
     end
   end
 
-  test 'uses priority passed to #set' do
+  test "uses priority passed to #set" do
     job = HelloJob.set(priority: 123).perform_later
     assert_equal 123, job.priority
   end
diff --git a/activejob/test/cases/queuing_test.rb b/activejob/test/cases/queuing_test.rb
index 0eeabbf693..9690e0cc79 100644
--- a/activejob/test/cases/queuing_test.rb
+++ b/activejob/test/cases/queuing_test.rb
@@ -1,6 +1,6 @@
-require 'helper'
-require 'jobs/hello_job'
-require 'active_support/core_ext/numeric/time'
+require "helper"
+require "jobs/hello_job"
+require "active_support/core_ext/numeric/time"
 
 
 class QueuingTest < ActiveSupport::TestCase
@@ -8,17 +8,17 @@ class QueuingTest < ActiveSupport::TestCase
     JobBuffer.clear
   end
 
-  test 'run queued job' do
+  test "run queued job" do
     HelloJob.perform_later
     assert_equal "David says hello", JobBuffer.last_value
   end
 
-  test 'run queued job with arguments' do
+  test "run queued job with arguments" do
     HelloJob.perform_later "Jamie"
     assert_equal "Jamie says hello", JobBuffer.last_value
   end
 
-  test 'run queued job later' do
+  test "run queued job later" do
     begin
       result = HelloJob.set(wait_until: 1.second.ago).perform_later "Jamie"
       assert result
@@ -27,13 +27,13 @@ class QueuingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'job returned by enqueue has the arguments available' do
+  test "job returned by enqueue has the arguments available" do
     job = HelloJob.perform_later "Jamie"
     assert_equal [ "Jamie" ], job.arguments
   end
 
 
-  test 'job returned by perform_at has the timestamp available' do
+  test "job returned by perform_at has the timestamp available" do
     begin
       job = HelloJob.set(wait_until: Time.utc(2014, 1, 1)).perform_later
       assert_equal Time.utc(2014, 1, 1).to_f, job.scheduled_at
diff --git a/activejob/test/cases/rescue_test.rb b/activejob/test/cases/rescue_test.rb
index 58c9ca8992..afb1b48831 100644
--- a/activejob/test/cases/rescue_test.rb
+++ b/activejob/test/cases/rescue_test.rb
@@ -1,34 +1,34 @@
-require 'helper'
-require 'jobs/rescue_job'
-require 'models/person'
+require "helper"
+require "jobs/rescue_job"
+require "models/person"
 
 class RescueTest < ActiveSupport::TestCase
   setup do
     JobBuffer.clear
   end
 
-  test 'rescue perform exception with retry' do
+  test "rescue perform exception with retry" do
     job = RescueJob.new("david")
     job.perform_now
     assert_equal [ "rescued from ArgumentError", "performed beautifully" ], JobBuffer.values
   end
 
-  test 'let through unhandled perform exception' do
+  test "let through unhandled perform exception" do
     job = RescueJob.new("other")
     assert_raises(RescueJob::OtherError) do
       job.perform_now
     end
   end
 
-  test 'rescue from deserialization errors' do
+  test "rescue from deserialization errors" do
     RescueJob.perform_later Person.new(404)
-    assert_includes JobBuffer.values, 'rescued from DeserializationError'
-    assert_includes JobBuffer.values, 'DeserializationError original exception was Person::RecordNotFound'
-    assert_not_includes JobBuffer.values, 'performed beautifully'
+    assert_includes JobBuffer.values, "rescued from DeserializationError"
+    assert_includes JobBuffer.values, "DeserializationError original exception was Person::RecordNotFound"
+    assert_not_includes JobBuffer.values, "performed beautifully"
   end
 
   test "should not wrap DeserializationError in DeserializationError" do
     RescueJob.perform_later [Person.new(404)]
-    assert_includes JobBuffer.values, 'DeserializationError original exception was Person::RecordNotFound'
+    assert_includes JobBuffer.values, "DeserializationError original exception was Person::RecordNotFound"
   end
 end
diff --git a/activejob/test/cases/test_case_test.rb b/activejob/test/cases/test_case_test.rb
index 616454a4b6..23fffd4235 100644
--- a/activejob/test/cases/test_case_test.rb
+++ b/activejob/test/cases/test_case_test.rb
@@ -1,7 +1,7 @@
-require 'helper'
-require 'jobs/hello_job'
-require 'jobs/logging_job'
-require 'jobs/nested_job'
+require "helper"
+require "jobs/hello_job"
+require "jobs/logging_job"
+require "jobs/nested_job"
 
 class ActiveJobTestCaseTest < ActiveJob::TestCase
   # this tests that this job class doesn't get its adapter set.
@@ -9,7 +9,7 @@ class ActiveJobTestCaseTest < ActiveJob::TestCase
   # the `class_attribute` inheritance
   class TestClassAttributeInheritanceJob < ActiveJob::Base
     def self.queue_adapter=(*)
-      raise 'Attempting to break `class_attribute` inheritance, bad!'
+      raise "Attempting to break `class_attribute` inheritance, bad!"
     end
   end
 
diff --git a/activejob/test/cases/test_helper_test.rb b/activejob/test/cases/test_helper_test.rb
index 3d863f5e65..2398402d5d 100644
--- a/activejob/test/cases/test_helper_test.rb
+++ b/activejob/test/cases/test_helper_test.rb
@@ -1,17 +1,17 @@
-require 'helper'
-require 'active_support/core_ext/time'
-require 'active_support/core_ext/date'
-require 'jobs/hello_job'
-require 'jobs/logging_job'
-require 'jobs/nested_job'
-require 'jobs/rescue_job'
-require 'models/person'
+require "helper"
+require "active_support/core_ext/time"
+require "active_support/core_ext/date"
+require "jobs/hello_job"
+require "jobs/logging_job"
+require "jobs/nested_job"
+require "jobs/rescue_job"
+require "models/person"
 
 class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs
     assert_nothing_raised do
       assert_enqueued_jobs 1 do
-        HelloJob.perform_later('david')
+        HelloJob.perform_later("david")
       end
     end
   end
@@ -19,23 +19,23 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_repeated_enqueued_jobs_calls
     assert_nothing_raised do
       assert_enqueued_jobs 1 do
-        HelloJob.perform_later('abdelkader')
+        HelloJob.perform_later("abdelkader")
       end
     end
 
     assert_nothing_raised do
       assert_enqueued_jobs 2 do
-        HelloJob.perform_later('sean')
-        HelloJob.perform_later('yves')
+        HelloJob.perform_later("sean")
+        HelloJob.perform_later("yves")
       end
     end
   end
 
   def test_assert_enqueued_jobs_message
-    HelloJob.perform_later('sean')
+    HelloJob.perform_later("sean")
     e = assert_raises Minitest::Assertion do
       assert_enqueued_jobs 2 do
-        HelloJob.perform_later('sean')
+        HelloJob.perform_later("sean")
       end
     end
     assert_match "Expected: 2", e.message
@@ -44,13 +44,13 @@ class EnqueuedJobsTest < ActiveJob::TestCase
 
   def test_assert_enqueued_jobs_with_no_block
     assert_nothing_raised do
-      HelloJob.perform_later('rafael')
+      HelloJob.perform_later("rafael")
       assert_enqueued_jobs 1
     end
 
     assert_nothing_raised do
-      HelloJob.perform_later('aaron')
-      HelloJob.perform_later('matthew')
+      HelloJob.perform_later("aaron")
+      HelloJob.perform_later("matthew")
       assert_enqueued_jobs 3
     end
   end
@@ -72,7 +72,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_too_few_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_enqueued_jobs 2 do
-        HelloJob.perform_later('xavier')
+        HelloJob.perform_later("xavier")
       end
     end
 
@@ -82,8 +82,8 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_too_many_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_enqueued_jobs 1 do
-        HelloJob.perform_later('cristian')
-        HelloJob.perform_later('guillermo')
+        HelloJob.perform_later("cristian")
+        HelloJob.perform_later("guillermo")
       end
     end
 
@@ -93,7 +93,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_no_enqueued_jobs_failure
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_no_enqueued_jobs do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
       end
     end
 
@@ -103,7 +103,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_with_only_option
     assert_nothing_raised do
       assert_enqueued_jobs 1, only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         LoggingJob.perform_later
       end
     end
@@ -122,7 +122,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_with_only_option_and_too_few_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_enqueued_jobs 5, only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         4.times { LoggingJob.perform_later }
       end
     end
@@ -133,7 +133,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_with_only_option_and_too_many_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_enqueued_jobs 1, only: HelloJob do
-        2.times { HelloJob.perform_later('jeremy') }
+        2.times { HelloJob.perform_later("jeremy") }
       end
     end
 
@@ -143,9 +143,9 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_enqueued_jobs_with_only_option_as_array
     assert_nothing_raised do
       assert_enqueued_jobs 2, only: [HelloJob, LoggingJob] do
-        HelloJob.perform_later('jeremy')
-        LoggingJob.perform_later('stewie')
-        RescueJob.perform_later('david')
+        HelloJob.perform_later("jeremy")
+        LoggingJob.perform_later("stewie")
+        RescueJob.perform_later("david")
       end
     end
   end
@@ -161,7 +161,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   def test_assert_no_enqueued_jobs_with_only_option_failure
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_no_enqueued_jobs only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         LoggingJob.perform_later
       end
     end
@@ -178,7 +178,7 @@ class EnqueuedJobsTest < ActiveJob::TestCase
   end
 
   def test_assert_enqueued_job
-    assert_enqueued_with(job: LoggingJob, queue: 'default') do
+    assert_enqueued_with(job: LoggingJob, queue: "default") do
       LoggingJob.set(wait_until: Date.tomorrow.noon).perform_later
     end
   end
@@ -190,19 +190,19 @@ class EnqueuedJobsTest < ActiveJob::TestCase
 
     assert_instance_of LoggingJob, job
     assert_in_delta 5.minutes.from_now, job.scheduled_at, 1
-    assert_equal 'default', job.queue_name
+    assert_equal "default", job.queue_name
     assert_equal [1, 2, 3], job.arguments
   end
 
   def test_assert_enqueued_job_failure
     assert_raise ActiveSupport::TestCase::Assertion do
-      assert_enqueued_with(job: LoggingJob, queue: 'default') do
+      assert_enqueued_with(job: LoggingJob, queue: "default") do
         NestedJob.perform_later
       end
     end
 
     error = assert_raise ActiveSupport::TestCase::Assertion do
-      assert_enqueued_with(job: NestedJob, queue: 'low') do
+      assert_enqueued_with(job: NestedJob, queue: "low") do
         NestedJob.perform_later
       end
     end
@@ -265,7 +265,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs
     assert_nothing_raised do
       assert_performed_jobs 1 do
-        HelloJob.perform_later('david')
+        HelloJob.perform_later("david")
       end
     end
   end
@@ -273,23 +273,23 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_repeated_performed_jobs_calls
     assert_nothing_raised do
       assert_performed_jobs 1 do
-        HelloJob.perform_later('abdelkader')
+        HelloJob.perform_later("abdelkader")
       end
     end
 
     assert_nothing_raised do
       assert_performed_jobs 2 do
-        HelloJob.perform_later('sean')
-        HelloJob.perform_later('yves')
+        HelloJob.perform_later("sean")
+        HelloJob.perform_later("yves")
       end
     end
   end
 
   def test_assert_performed_jobs_message
-    HelloJob.perform_later('sean')
+    HelloJob.perform_later("sean")
     e = assert_raises Minitest::Assertion do
       assert_performed_jobs 2 do
-        HelloJob.perform_later('sean')
+        HelloJob.perform_later("sean")
       end
     end
     assert_match "Expected: 2", e.message
@@ -299,15 +299,15 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_with_no_block
     assert_nothing_raised do
       perform_enqueued_jobs do
-        HelloJob.perform_later('rafael')
+        HelloJob.perform_later("rafael")
       end
       assert_performed_jobs 1
     end
 
     assert_nothing_raised do
       perform_enqueued_jobs do
-        HelloJob.perform_later('aaron')
-        HelloJob.perform_later('matthew')
+        HelloJob.perform_later("aaron")
+        HelloJob.perform_later("matthew")
         assert_performed_jobs 3
       end
     end
@@ -330,7 +330,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_too_few_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_performed_jobs 2 do
-        HelloJob.perform_later('xavier')
+        HelloJob.perform_later("xavier")
       end
     end
 
@@ -340,8 +340,8 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_too_many_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_performed_jobs 1 do
-        HelloJob.perform_later('cristian')
-        HelloJob.perform_later('guillermo')
+        HelloJob.perform_later("cristian")
+        HelloJob.perform_later("guillermo")
       end
     end
 
@@ -351,7 +351,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_no_performed_jobs_failure
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_no_performed_jobs do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
       end
     end
 
@@ -361,7 +361,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_with_only_option
     assert_nothing_raised do
       assert_performed_jobs 1, only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         LoggingJob.perform_later
       end
     end
@@ -370,9 +370,9 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_with_only_option_as_array
     assert_nothing_raised do
       assert_performed_jobs 2, only: [HelloJob, LoggingJob] do
-        HelloJob.perform_later('jeremy')
-        LoggingJob.perform_later('stewie')
-        RescueJob.perform_later('david')
+        HelloJob.perform_later("jeremy")
+        LoggingJob.perform_later("stewie")
+        RescueJob.perform_later("david")
       end
     end
   end
@@ -390,7 +390,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_with_only_option_and_too_few_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_performed_jobs 5, only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         4.times { LoggingJob.perform_later }
       end
     end
@@ -401,7 +401,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_performed_jobs_with_only_option_and_too_many_sent
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_performed_jobs 1, only: HelloJob do
-        2.times { HelloJob.perform_later('jeremy') }
+        2.times { HelloJob.perform_later("jeremy") }
       end
     end
 
@@ -427,7 +427,7 @@ class PerformedJobsTest < ActiveJob::TestCase
   def test_assert_no_performed_jobs_with_only_option_failure
     error = assert_raise ActiveSupport::TestCase::Assertion do
       assert_no_performed_jobs only: HelloJob do
-        HelloJob.perform_later('jeremy')
+        HelloJob.perform_later("jeremy")
         LoggingJob.perform_later
       end
     end
@@ -436,20 +436,20 @@ class PerformedJobsTest < ActiveJob::TestCase
   end
 
   def test_assert_performed_job
-    assert_performed_with(job: NestedJob, queue: 'default') do
+    assert_performed_with(job: NestedJob, queue: "default") do
       NestedJob.perform_later
     end
   end
 
   def test_assert_performed_job_returns
-    job = assert_performed_with(job: NestedJob, queue: 'default') do
+    job = assert_performed_with(job: NestedJob, queue: "default") do
       NestedJob.perform_later
     end
 
     assert_instance_of NestedJob, job
     assert_nil job.scheduled_at
     assert_equal [], job.arguments
-    assert_equal 'default', job.queue_name
+    assert_equal "default", job.queue_name
   end
 
   def test_assert_performed_job_failure
@@ -460,8 +460,8 @@ class PerformedJobsTest < ActiveJob::TestCase
     end
 
     assert_raise ActiveSupport::TestCase::Assertion do
-      assert_performed_with(job: HelloJob, queue: 'low') do
-        HelloJob.set(queue: 'important').perform_later
+      assert_performed_with(job: HelloJob, queue: "low") do
+        HelloJob.set(queue: "important").perform_later
       end
     end
   end
diff --git a/activejob/test/cases/translation_test.rb b/activejob/test/cases/translation_test.rb
index d5e3aaf9e3..27bfd50985 100644
--- a/activejob/test/cases/translation_test.rb
+++ b/activejob/test/cases/translation_test.rb
@@ -1,18 +1,18 @@
-require 'helper'
-require 'jobs/translated_hello_job'
+require "helper"
+require "jobs/translated_hello_job"
 
 class TranslationTest < ActiveSupport::TestCase
   setup do
     JobBuffer.clear
     I18n.available_locales = [:en, :de]
-    @job = TranslatedHelloJob.new('Johannes')
+    @job = TranslatedHelloJob.new("Johannes")
   end
 
   teardown do
     I18n.available_locales = [:en]
   end
 
-  test 'it performs the job in the given locale' do
+  test "it performs the job in the given locale" do
     @job.locale = :de
     @job.perform_now
     assert_equal "Johannes says Guten Tag", JobBuffer.last_value
diff --git a/activejob/test/helper.rb b/activejob/test/helper.rb
index 54b6076f09..dbc7dad109 100644
--- a/activejob/test/helper.rb
+++ b/activejob/test/helper.rb
@@ -1,16 +1,16 @@
-require 'active_job'
-require 'support/job_buffer'
+require "active_job"
+require "support/job_buffer"
 
 ActiveSupport.halt_callback_chains_on_return_false = false
-GlobalID.app = 'aj'
+GlobalID.app = "aj"
 
-@adapter  = ENV['AJ_ADAPTER'] || 'inline'
+@adapter  = ENV["AJ_ADAPTER"] || "inline"
 
-if ENV['AJ_INTEGRATION_TESTS']
-  require 'support/integration/helper'
+if ENV["AJ_INTEGRATION_TESTS"]
+  require "support/integration/helper"
 else
   ActiveJob::Base.logger = Logger.new(nil)
   require "adapters/#{@adapter}"
 end
 
-require 'active_support/testing/autorun'
+require "active_support/testing/autorun"
diff --git a/activejob/test/integration/queuing_test.rb b/activejob/test/integration/queuing_test.rb
index ab3de3a8b9..41b6b9cd6b 100644
--- a/activejob/test/integration/queuing_test.rb
+++ b/activejob/test/integration/queuing_test.rb
@@ -1,17 +1,17 @@
-require 'helper'
-require 'jobs/logging_job'
-require 'jobs/hello_job'
-require 'jobs/provider_jid_job'
-require 'active_support/core_ext/numeric/time'
+require "helper"
+require "jobs/logging_job"
+require "jobs/hello_job"
+require "jobs/provider_jid_job"
+require "active_support/core_ext/numeric/time"
 
 class QueuingTest < ActiveSupport::TestCase
-  test 'should run jobs enqueued on a listening queue' do
+  test "should run jobs enqueued on a listening queue" do
     TestJob.perform_later @id
     wait_for_jobs_to_finish_for(5.seconds)
     assert job_executed
   end
 
-  test 'should not run jobs queued on a non-listening queue' do
+  test "should not run jobs queued on a non-listening queue" do
     skip if adapter_is?(:inline, :async, :sucker_punch, :que)
     old_queue = TestJob.queue_name
 
@@ -25,17 +25,17 @@ class QueuingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should supply a wrapped class name to Sidekiq' do
+  test "should supply a wrapped class name to Sidekiq" do
     skip unless adapter_is?(:sidekiq)
     Sidekiq::Testing.fake! do
       ::HelloJob.perform_later
       hash = ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper.jobs.first
-      assert_equal "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper", hash['class']
-      assert_equal "HelloJob", hash['wrapped']
+      assert_equal "ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper", hash["class"]
+      assert_equal "HelloJob", hash["wrapped"]
     end
   end
 
-  test 'should access provider_job_id inside Sidekiq job' do
+  test "should access provider_job_id inside Sidekiq job" do
     skip unless adapter_is?(:sidekiq)
     Sidekiq::Testing.inline! do
       job = ::ProviderJidJob.perform_later
@@ -43,7 +43,7 @@ class QueuingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should not run job enqueued in the future' do
+  test "should not run job enqueued in the future" do
     begin
       TestJob.set(wait: 10.minutes).perform_later @id
       wait_for_jobs_to_finish_for(5.seconds)
@@ -53,7 +53,7 @@ class QueuingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should run job enqueued in the future at the specified time' do
+  test "should run job enqueued in the future at the specified time" do
     begin
       TestJob.set(wait: 5.seconds).perform_later @id
       wait_for_jobs_to_finish_for(2.seconds)
@@ -65,19 +65,19 @@ class QueuingTest < ActiveSupport::TestCase
     end
   end
 
-  test 'should supply a provider_job_id when available for immediate jobs' do
+  test "should supply a provider_job_id when available for immediate jobs" do
     skip unless adapter_is?(:async, :delayed_job, :sidekiq, :qu, :que, :queue_classic)
     test_job = TestJob.perform_later @id
-    assert test_job.provider_job_id, 'Provider job id should be set by provider'
+    assert test_job.provider_job_id, "Provider job id should be set by provider"
   end
 
-  test 'should supply a provider_job_id when available for delayed jobs' do
+  test "should supply a provider_job_id when available for delayed jobs" do
     skip unless adapter_is?(:async, :delayed_job, :sidekiq, :que, :queue_classic)
     delayed_test_job = TestJob.set(wait: 1.minute).perform_later @id
-    assert delayed_test_job.provider_job_id, 'Provider job id should by set for delayed jobs by provider'
+    assert delayed_test_job.provider_job_id, "Provider job id should by set for delayed jobs by provider"
   end
 
-  test 'current locale is kept while running perform_later' do
+  test "current locale is kept while running perform_later" do
     skip if adapter_is?(:inline)
 
     begin
@@ -87,14 +87,14 @@ class QueuingTest < ActiveSupport::TestCase
       TestJob.perform_later @id
       wait_for_jobs_to_finish_for(5.seconds)
       assert job_executed
-      assert_equal 'de', job_executed_in_locale
+      assert_equal "de", job_executed_in_locale
     ensure
       I18n.available_locales = [:en]
       I18n.locale = :en
     end
   end
 
-  test 'should run job with higher priority first' do
+  test "should run job with higher priority first" do
     skip unless adapter_is?(:delayed_job, :que)
 
     wait_until = Time.now + 3.seconds
diff --git a/activejob/test/jobs/gid_job.rb b/activejob/test/jobs/gid_job.rb
index e485bfa2dd..42484dc198 100644
--- a/activejob/test/jobs/gid_job.rb
+++ b/activejob/test/jobs/gid_job.rb
@@ -1,4 +1,4 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class GidJob < ActiveJob::Base
   def perform(person)
diff --git a/activejob/test/jobs/hello_job.rb b/activejob/test/jobs/hello_job.rb
index 022fa58e4a..126fefae00 100644
--- a/activejob/test/jobs/hello_job.rb
+++ b/activejob/test/jobs/hello_job.rb
@@ -1,4 +1,4 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class HelloJob < ActiveJob::Base
   def perform(greeter = "David")
diff --git a/activejob/test/jobs/kwargs_job.rb b/activejob/test/jobs/kwargs_job.rb
index 2df17d15ae..9f9d809673 100644
--- a/activejob/test/jobs/kwargs_job.rb
+++ b/activejob/test/jobs/kwargs_job.rb
@@ -1,4 +1,4 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class KwargsJob < ActiveJob::Base
   def perform(argument: 1)
diff --git a/activejob/test/jobs/provider_jid_job.rb b/activejob/test/jobs/provider_jid_job.rb
index e4f585fa94..0c8ba040f5 100644
--- a/activejob/test/jobs/provider_jid_job.rb
+++ b/activejob/test/jobs/provider_jid_job.rb
@@ -1,4 +1,4 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class ProviderJidJob < ActiveJob::Base
   def perform
diff --git a/activejob/test/jobs/queue_as_job.rb b/activejob/test/jobs/queue_as_job.rb
index 897aef52e5..7dc318e736 100644
--- a/activejob/test/jobs/queue_as_job.rb
+++ b/activejob/test/jobs/queue_as_job.rb
@@ -1,4 +1,4 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class QueueAsJob < ActiveJob::Base
   MY_QUEUE = :low_priority
diff --git a/activejob/test/jobs/rescue_job.rb b/activejob/test/jobs/rescue_job.rb
index 4f6376c850..ef8f777437 100644
--- a/activejob/test/jobs/rescue_job.rb
+++ b/activejob/test/jobs/rescue_job.rb
@@ -1,16 +1,16 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class RescueJob < ActiveJob::Base
   class OtherError < StandardError; end
 
   rescue_from(ArgumentError) do
-    JobBuffer.add('rescued from ArgumentError')
+    JobBuffer.add("rescued from ArgumentError")
     arguments[0] = "DIFFERENT!"
     retry_job
   end
 
   rescue_from(ActiveJob::DeserializationError) do |e|
-    JobBuffer.add('rescued from DeserializationError')
+    JobBuffer.add("rescued from DeserializationError")
     JobBuffer.add("DeserializationError original exception was #{e.cause.class.name}")
   end
 
@@ -21,7 +21,7 @@ class RescueJob < ActiveJob::Base
     when "other"
       raise OtherError
     else
-      JobBuffer.add('performed beautifully')
+      JobBuffer.add("performed beautifully")
     end
   end
 end
diff --git a/activejob/test/jobs/retry_job.rb b/activejob/test/jobs/retry_job.rb
index 350edee61c..be20156984 100644
--- a/activejob/test/jobs/retry_job.rb
+++ b/activejob/test/jobs/retry_job.rb
@@ -1,5 +1,5 @@
-require_relative '../support/job_buffer'
-require 'active_support/core_ext/integer/inflections'
+require_relative "../support/job_buffer"
+require "active_support/core_ext/integer/inflections"
 
 class DefaultsError < StandardError; end
 class LongWaitError < StandardError; end
diff --git a/activejob/test/jobs/translated_hello_job.rb b/activejob/test/jobs/translated_hello_job.rb
index 9657cd3f54..56e9f147b9 100644
--- a/activejob/test/jobs/translated_hello_job.rb
+++ b/activejob/test/jobs/translated_hello_job.rb
@@ -1,8 +1,8 @@
-require_relative '../support/job_buffer'
+require_relative "../support/job_buffer"
 
 class TranslatedHelloJob < ActiveJob::Base
   def perform(greeter = "David")
-    translations = { en: 'Hello', de: 'Guten Tag' }
+    translations = { en: "Hello", de: "Guten Tag" }
     hello        = translations[I18n.locale]
 
     JobBuffer.add("#{greeter} says #{hello}")
diff --git a/activejob/test/support/backburner/inline.rb b/activejob/test/support/backburner/inline.rb
index f761b53e27..7b7954e8f7 100644
--- a/activejob/test/support/backburner/inline.rb
+++ b/activejob/test/support/backburner/inline.rb
@@ -1,4 +1,4 @@
-require 'backburner'
+require "backburner"
 
 Backburner::Worker.class_eval do
   class << self; alias_method :original_enqueue, :enqueue; end
diff --git a/activejob/test/support/delayed_job/delayed/backend/test.rb b/activejob/test/support/delayed_job/delayed/backend/test.rb
index f80ec3a5a6..e4aca625cd 100644
--- a/activejob/test/support/delayed_job/delayed/backend/test.rb
+++ b/activejob/test/support/delayed_job/delayed/backend/test.rb
@@ -1,5 +1,5 @@
 #copied from https://github.com/collectiveidea/delayed_job/blob/master/spec/delayed/backend/test.rb
-require 'ostruct'
+require "ostruct"
 
 # An in-memory backend suitable only for testing. Tries to behave as if it were an ORM.
 module Delayed
diff --git a/activejob/test/support/integration/adapters/delayed_job.rb b/activejob/test/support/integration/adapters/delayed_job.rb
index 0b591964bc..2adbbcd88f 100644
--- a/activejob/test/support/integration/adapters/delayed_job.rb
+++ b/activejob/test/support/integration/adapters/delayed_job.rb
@@ -1,5 +1,5 @@
-require 'delayed_job'
-require 'delayed_job_active_record'
+require "delayed_job"
+require "delayed_job_active_record"
 
 module DelayedJobJobsManager
   def setup
diff --git a/activejob/test/support/integration/adapters/qu.rb b/activejob/test/support/integration/adapters/qu.rb
index 256ddb3cf3..71819f5a55 100644
--- a/activejob/test/support/integration/adapters/qu.rb
+++ b/activejob/test/support/integration/adapters/qu.rb
@@ -1,9 +1,9 @@
 module QuJobsManager
   def setup
-    require 'qu-rails'
-    require 'qu-redis'
+    require "qu-rails"
+    require "qu-redis"
     ActiveJob::Base.queue_adapter = :qu
-    ENV['REDISTOGO_URL'] = "redis://127.0.0.1:6379/12"
+    ENV["REDISTOGO_URL"] = "redis://127.0.0.1:6379/12"
     backend = Qu::Backend::Redis.new
     backend.namespace = "active_jobs_int_test"
     Qu.backend  = backend
diff --git a/activejob/test/support/integration/adapters/que.rb b/activejob/test/support/integration/adapters/que.rb
index 0cd8952a28..3d35a0439f 100644
--- a/activejob/test/support/integration/adapters/que.rb
+++ b/activejob/test/support/integration/adapters/que.rb
@@ -1,6 +1,6 @@
 module QueJobsManager
   def setup
-    require 'sequel'
+    require "sequel"
     ActiveJob::Base.queue_adapter = :que
     Que.mode = :off
     Que.worker_count = 1
@@ -11,9 +11,9 @@ module QueJobsManager
   end
 
   def start_workers
-    que_url = ENV['QUE_DATABASE_URL'] || 'postgres:///active_jobs_que_int_test'
+    que_url = ENV["QUE_DATABASE_URL"] || "postgres:///active_jobs_que_int_test"
     uri = URI.parse(que_url)
-    user = uri.user||ENV['USER']
+    user = uri.user||ENV["USER"]
     pass = uri.password
     db   = uri.path[1..-1]
     %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'drop database if exists "#{db}"' -U #{user} -t template1}
diff --git a/activejob/test/support/integration/adapters/queue_classic.rb b/activejob/test/support/integration/adapters/queue_classic.rb
index 29c04bf625..b5d831428e 100644
--- a/activejob/test/support/integration/adapters/queue_classic.rb
+++ b/activejob/test/support/integration/adapters/queue_classic.rb
@@ -1,8 +1,8 @@
 module QueueClassicJobsManager
   def setup
-    ENV['QC_DATABASE_URL'] ||= 'postgres:///active_jobs_qc_int_test'
-    ENV['QC_RAILS_DATABASE'] = 'false'
-    ENV['QC_LISTEN_TIME']    = "0.5"
+    ENV["QC_DATABASE_URL"] ||= "postgres:///active_jobs_qc_int_test"
+    ENV["QC_RAILS_DATABASE"] = "false"
+    ENV["QC_LISTEN_TIME"]    = "0.5"
     ActiveJob::Base.queue_adapter = :queue_classic
   end
 
@@ -11,8 +11,8 @@ module QueueClassicJobsManager
   end
 
   def start_workers
-    uri = URI.parse(ENV['QC_DATABASE_URL'])
-    user = uri.user||ENV['USER']
+    uri = URI.parse(ENV["QC_DATABASE_URL"])
+    user = uri.user||ENV["USER"]
     pass = uri.password
     db   = uri.path[1..-1]
     %x{#{"PGPASSWORD=\"#{pass}\"" if pass} psql -c 'drop database if exists "#{db}"' -U #{user} -t template1}
@@ -22,7 +22,7 @@ module QueueClassicJobsManager
     QC.default_conn_adapter.disconnect
     QC.default_conn_adapter = nil
     @pid = fork do
-      worker = QC::Worker.new(q_name: 'integration_tests')
+      worker = QC::Worker.new(q_name: "integration_tests")
       worker.start
     end
 
@@ -32,6 +32,6 @@ module QueueClassicJobsManager
   end
 
   def stop_workers
-    Process.kill 'HUP', @pid
+    Process.kill "HUP", @pid
   end
 end
diff --git a/activejob/test/support/integration/adapters/resque.rb b/activejob/test/support/integration/adapters/resque.rb
index 912f4bc387..cb1e376364 100644
--- a/activejob/test/support/integration/adapters/resque.rb
+++ b/activejob/test/support/integration/adapters/resque.rb
@@ -1,7 +1,7 @@
 module ResqueJobsManager
   def setup
     ActiveJob::Base.queue_adapter = :resque
-    Resque.redis = Redis::Namespace.new 'active_jobs_int_test', redis: Redis.connect(url: "redis://127.0.0.1:6379/12", :thread_safe => true)
+    Resque.redis = Redis::Namespace.new "active_jobs_int_test", redis: Redis.connect(url: "redis://127.0.0.1:6379/12", :thread_safe => true)
     Resque.logger = Rails.logger
     unless can_run?
       puts "Cannot run integration tests for resque. To be able to run integration tests for resque you need to install and start redis.\n"
diff --git a/activejob/test/support/integration/adapters/sidekiq.rb b/activejob/test/support/integration/adapters/sidekiq.rb
index 2f19d7dacc..9d0f2d0bf3 100644
--- a/activejob/test/support/integration/adapters/sidekiq.rb
+++ b/activejob/test/support/integration/adapters/sidekiq.rb
@@ -1,6 +1,6 @@
-require 'sidekiq/api'
+require "sidekiq/api"
 
-require 'sidekiq/testing'
+require "sidekiq/testing"
 Sidekiq::Testing.disable!
 
 module SidekiqJobsManager
@@ -29,7 +29,7 @@ module SidekiqJobsManager
       # Sidekiq is not warning-clean :(
       $VERBOSE = false
 
-      $stdin.reopen('/dev/null')
+      $stdin.reopen("/dev/null")
       $stdout.sync = true
       $stderr.sync = true
 
@@ -49,7 +49,7 @@ module SidekiqJobsManager
         self_write.puts("TERM")
       end
 
-      require 'sidekiq/launcher'
+      require "sidekiq/launcher"
       sidekiq = Sidekiq::Launcher.new({queues: ["integration_tests"],
                                        environment: "test",
                                        concurrency: 1,
@@ -79,7 +79,7 @@ module SidekiqJobsManager
 
   def stop_workers
     if @pid
-      Process.kill 'TERM', @pid
+      Process.kill "TERM", @pid
       Process.wait @pid
     end
   end
diff --git a/activejob/test/support/integration/adapters/sneakers.rb b/activejob/test/support/integration/adapters/sneakers.rb
index 875803a2d8..71e32a3cdd 100644
--- a/activejob/test/support/integration/adapters/sneakers.rb
+++ b/activejob/test/support/integration/adapters/sneakers.rb
@@ -1,6 +1,6 @@
-require 'sneakers/runner'
-require 'sneakers/publisher'
-require 'timeout'
+require "sneakers/runner"
+require "sneakers/publisher"
+require "timeout"
 
 module Sneakers
   class Publisher
@@ -17,9 +17,9 @@ module SneakersJobsManager
   def setup
     ActiveJob::Base.queue_adapter = :sneakers
     Sneakers.configure  :heartbeat => 2,
-                        :amqp => 'amqp://guest:guest@localhost:5672',
-                        :vhost => '/',
-                        :exchange => 'active_jobs_sneakers_int_test',
+                        :amqp => "amqp://guest:guest@localhost:5672",
+                        :vhost => "/",
+                        :exchange => "active_jobs_sneakers_int_test",
                         :exchange_type => :direct,
                         :daemonize => true,
                         :threads => 1,
@@ -60,8 +60,8 @@ module SneakersJobsManager
   end
 
   def stop_workers
-    Process.kill 'TERM', @pid
-    Process.kill 'TERM', File.open(Rails.root.join("tmp/sneakers.pid").to_s).read.to_i
+    Process.kill "TERM", @pid
+    Process.kill "TERM", File.open(Rails.root.join("tmp/sneakers.pid").to_s).read.to_i
   rescue
   end
 
diff --git a/activejob/test/support/integration/dummy_app_template.rb b/activejob/test/support/integration/dummy_app_template.rb
index a0ef38b0b2..62f6fa13f6 100644
--- a/activejob/test/support/integration/dummy_app_template.rb
+++ b/activejob/test/support/integration/dummy_app_template.rb
@@ -1,19 +1,19 @@
-if ENV['AJ_ADAPTER'] == 'delayed_job'
+if ENV["AJ_ADAPTER"] == "delayed_job"
   generate "delayed_job:active_record", "--quiet"
 end
 
 rails_command("db:migrate")
 
-initializer 'activejob.rb', <<-CODE
+initializer "activejob.rb", <<-CODE
 require "#{File.expand_path("../jobs_manager.rb",  __FILE__)}"
 JobsManager.current_manager.setup
 CODE
 
-initializer 'i18n.rb', <<-CODE
+initializer "i18n.rb", <<-CODE
 I18n.available_locales = [:en, :de]
 CODE
 
-file 'app/jobs/test_job.rb', <<-CODE
+file "app/jobs/test_job.rb", <<-CODE
 class TestJob < ActiveJob::Base
   queue_as :integration_tests
 
diff --git a/activejob/test/support/integration/helper.rb b/activejob/test/support/integration/helper.rb
index 4a1b0bfbcb..1aaee2c809 100644
--- a/activejob/test/support/integration/helper.rb
+++ b/activejob/test/support/integration/helper.rb
@@ -3,7 +3,7 @@ puts "\n\n*** rake aj:integration:#{ENV['AJ_ADAPTER']} ***\n"
 ENV["RAILS_ENV"] = "test"
 ActiveJob::Base.queue_name_prefix = nil
 
-require 'rails/generators/rails/app/app_generator'
+require "rails/generators/rails/app/app_generator"
 
 dummy_app_path     = Dir.mktmpdir + "/dummy"
 dummy_app_template = File.expand_path("../dummy_app_template.rb",  __FILE__)
@@ -14,12 +14,12 @@ Rails::Generators::AppGenerator.start args
 
 require "#{dummy_app_path}/config/environment.rb"
 
-ActiveRecord::Migrator.migrations_paths = [ Rails.root.join('db/migrate').to_s ]
-require 'rails/test_help'
+ActiveRecord::Migrator.migrations_paths = [ Rails.root.join("db/migrate").to_s ]
+require "rails/test_help"
 
 Rails.backtrace_cleaner.remove_silencers!
 
-require_relative 'test_case_helpers'
+require_relative "test_case_helpers"
 ActiveSupport::TestCase.include(TestCaseHelpers)
 
 JobsManager.current_manager.start_workers
diff --git a/activejob/test/support/integration/jobs_manager.rb b/activejob/test/support/integration/jobs_manager.rb
index 78d48e8d9a..488756437b 100644
--- a/activejob/test/support/integration/jobs_manager.rb
+++ b/activejob/test/support/integration/jobs_manager.rb
@@ -3,7 +3,7 @@ class JobsManager
   attr :adapter_name
 
   def self.current_manager
-    @@managers[ENV['AJ_ADAPTER']] ||= new(ENV['AJ_ADAPTER'])
+    @@managers[ENV["AJ_ADAPTER"]] ||= new(ENV["AJ_ADAPTER"])
   end
 
   def initialize(adapter_name)
diff --git a/activejob/test/support/integration/test_case_helpers.rb b/activejob/test/support/integration/test_case_helpers.rb
index fdf25c67a1..4c4c56c9da 100644
--- a/activejob/test/support/integration/test_case_helpers.rb
+++ b/activejob/test/support/integration/test_case_helpers.rb
@@ -1,6 +1,6 @@
-require 'active_support/concern'
-require 'active_support/core_ext/string/inflections'
-require 'support/integration/jobs_manager'
+require "active_support/concern"
+require "active_support/core_ext/string/inflections"
+require "support/integration/jobs_manager"
 
 module TestCaseHelpers
   extend ActiveSupport::Concern
@@ -29,7 +29,7 @@ module TestCaseHelpers
     end
 
     def adapter_is?(*adapter_class_symbols)
-      adapter = ActiveJob::Base.queue_adapter.class.name.demodulize.chomp('Adapter').underscore
+      adapter = ActiveJob::Base.queue_adapter.class.name.demodulize.chomp("Adapter").underscore
       adapter_class_symbols.map(&:to_s).include? adapter
     end
 
diff --git a/activejob/test/support/que/inline.rb b/activejob/test/support/que/inline.rb
index 0950e52d28..ea9999b473 100644
--- a/activejob/test/support/que/inline.rb
+++ b/activejob/test/support/que/inline.rb
@@ -1,4 +1,4 @@
-require 'que'
+require "que"
 
 Que::Job.class_eval do
   class << self; alias_method :original_enqueue, :enqueue; end
diff --git a/activejob/test/support/queue_classic/inline.rb b/activejob/test/support/queue_classic/inline.rb
index 5743d5bbb5..dcd834ecce 100644
--- a/activejob/test/support/queue_classic/inline.rb
+++ b/activejob/test/support/queue_classic/inline.rb
@@ -1,21 +1,21 @@
-require 'queue_classic'
+require "queue_classic"
 
 module QC
   class Queue
     def enqueue(method, *args)
-      receiver_str, _, message = method.rpartition('.')
+      receiver_str, _, message = method.rpartition(".")
       receiver = eval(receiver_str)
       receiver.send(message, *args)
     end
 
     def enqueue_in(seconds, method, *args)
-      receiver_str, _, message = method.rpartition('.')
+      receiver_str, _, message = method.rpartition(".")
       receiver = eval(receiver_str)
       receiver.send(message, *args)
     end
 
     def enqueue_at(not_before, method, *args)
-      receiver_str, _, message = method.rpartition('.')
+      receiver_str, _, message = method.rpartition(".")
       receiver = eval(receiver_str)
       receiver.send(message, *args)
     end
diff --git a/activejob/test/support/sneakers/inline.rb b/activejob/test/support/sneakers/inline.rb
index 16d9b830fa..3cdc54e6d5 100644
--- a/activejob/test/support/sneakers/inline.rb
+++ b/activejob/test/support/sneakers/inline.rb
@@ -1,4 +1,4 @@
-require 'sneakers'
+require "sneakers"
 
 module Sneakers
   module Worker