From 48c88715646c3d1b9933c9e7c8110a9e33ff1900 Mon Sep 17 00:00:00 2001
From: Colin Kelley <colindkelley@gmail.com>
Date: Mon, 14 Sep 2020 16:27:53 -0700
Subject: [PATCH] issue #494: add magic # frozen_string_literal: true comment

---
 Gemfile                                     | 2 ++
 Rakefile                                    | 2 ++
 lib/listen.rb                               | 2 ++
 lib/listen/adapter.rb                       | 2 ++
 lib/listen/adapter/base.rb                  | 2 ++
 lib/listen/adapter/bsd.rb                   | 2 ++
 lib/listen/adapter/config.rb                | 2 ++
 lib/listen/adapter/darwin.rb                | 2 ++
 lib/listen/adapter/linux.rb                 | 2 ++
 lib/listen/adapter/polling.rb               | 2 ++
 lib/listen/adapter/windows.rb               | 2 ++
 lib/listen/backend.rb                       | 2 ++
 lib/listen/change.rb                        | 2 ++
 lib/listen/cli.rb                           | 2 ++
 lib/listen/directory.rb                     | 2 ++
 lib/listen/event/config.rb                  | 2 ++
 lib/listen/event/loop.rb                    | 2 ++
 lib/listen/event/processor.rb               | 2 ++
 lib/listen/event/queue.rb                   | 2 ++
 lib/listen/file.rb                          | 2 ++
 lib/listen/fsm.rb                           | 2 ++
 lib/listen/listener.rb                      | 2 ++
 lib/listen/listener/config.rb               | 2 ++
 lib/listen/logger.rb                        | 2 ++
 lib/listen/options.rb                       | 2 ++
 lib/listen/queue_optimizer.rb               | 2 ++
 lib/listen/record.rb                        | 2 ++
 lib/listen/record/entry.rb                  | 2 ++
 lib/listen/record/symlink_detector.rb       | 2 ++
 lib/listen/silencer.rb                      | 2 ++
 lib/listen/silencer/controller.rb           | 2 ++
 lib/listen/version.rb                       | 2 ++
 spec/acceptance/listen_spec.rb              | 2 ++
 spec/lib/listen/adapter/base_spec.rb        | 2 ++
 spec/lib/listen/adapter/bsd_spec.rb         | 2 ++
 spec/lib/listen/adapter/config_spec.rb      | 2 ++
 spec/lib/listen/adapter/darwin_spec.rb      | 2 ++
 spec/lib/listen/adapter/linux_spec.rb       | 2 ++
 spec/lib/listen/adapter/polling_spec.rb     | 2 ++
 spec/lib/listen/adapter/windows_spec.rb     | 2 ++
 spec/lib/listen/adapter_spec.rb             | 2 ++
 spec/lib/listen/backend_spec.rb             | 2 ++
 spec/lib/listen/change_spec.rb              | 2 ++
 spec/lib/listen/cli_spec.rb                 | 2 ++
 spec/lib/listen/directory_spec.rb           | 2 ++
 spec/lib/listen/event/config_spec.rb        | 2 ++
 spec/lib/listen/event/loop_spec.rb          | 2 ++
 spec/lib/listen/event/processor_spec.rb     | 2 ++
 spec/lib/listen/event/queue_spec.rb         | 2 ++
 spec/lib/listen/file_spec.rb                | 2 ++
 spec/lib/listen/fsm_spec.rb                 | 2 ++
 spec/lib/listen/listener/config_spec.rb     | 2 ++
 spec/lib/listen/listener_spec.rb            | 2 ++
 spec/lib/listen/queue_optimizer_spec.rb     | 2 ++
 spec/lib/listen/record_spec.rb              | 2 ++
 spec/lib/listen/silencer/controller_spec.rb | 2 ++
 spec/lib/listen/silencer_spec.rb            | 2 ++
 spec/lib/listen_spec.rb                     | 2 ++
 spec/spec_helper.rb                         | 2 ++
 spec/support/acceptance_helper.rb           | 2 ++
 spec/support/fixtures_helper.rb             | 2 ++
 spec/support/platform_helper.rb             | 2 ++
 62 files changed, 124 insertions(+)

diff --git a/Gemfile b/Gemfile
index cfc65fe2..dc3f8b90 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
 
 # Create this file to use pristine/installed version of Listen for development
diff --git a/Rakefile b/Rakefile
index 836154c4..10ba8b7e 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
 
diff --git a/lib/listen.rb b/lib/listen.rb
index f21d48e2..cb355050 100644
--- a/lib/listen.rb
+++ b/lib/listen.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'logger'
 require 'weakref'
 require 'listen/logger'
diff --git a/lib/listen/adapter.rb b/lib/listen/adapter.rb
index a1954d90..a2e15014 100644
--- a/lib/listen/adapter.rb
+++ b/lib/listen/adapter.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/adapter/base'
 require 'listen/adapter/bsd'
 require 'listen/adapter/darwin'
diff --git a/lib/listen/adapter/base.rb b/lib/listen/adapter/base.rb
index 267a2641..30c8cf50 100644
--- a/lib/listen/adapter/base.rb
+++ b/lib/listen/adapter/base.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/options'
 require 'listen/record'
 require 'listen/change'
diff --git a/lib/listen/adapter/bsd.rb b/lib/listen/adapter/bsd.rb
index 7db424f9..d3b7ccb3 100644
--- a/lib/listen/adapter/bsd.rb
+++ b/lib/listen/adapter/bsd.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Listener implementation for BSD's `kqueue`.
 # @see http://www.freebsd.org/cgi/man.cgi?query=kqueue
 # @see https://github.com/mat813/rb-kqueue/blob/master/lib/rb-kqueue/queue.rb
diff --git a/lib/listen/adapter/config.rb b/lib/listen/adapter/config.rb
index fbd60e09..eb0c6099 100644
--- a/lib/listen/adapter/config.rb
+++ b/lib/listen/adapter/config.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'pathname'
 
 module Listen
diff --git a/lib/listen/adapter/darwin.rb b/lib/listen/adapter/darwin.rb
index 0cfa3e9c..0d36d39f 100644
--- a/lib/listen/adapter/darwin.rb
+++ b/lib/listen/adapter/darwin.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thread'
 
 module Listen
diff --git a/lib/listen/adapter/linux.rb b/lib/listen/adapter/linux.rb
index 018e7c03..9b9c7634 100644
--- a/lib/listen/adapter/linux.rb
+++ b/lib/listen/adapter/linux.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   module Adapter
     # @see https://github.com/nex3/rb-inotify
diff --git a/lib/listen/adapter/polling.rb b/lib/listen/adapter/polling.rb
index 486eafe4..5a6628aa 100644
--- a/lib/listen/adapter/polling.rb
+++ b/lib/listen/adapter/polling.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   module Adapter
     # Polling Adapter that works cross-platform and
diff --git a/lib/listen/adapter/windows.rb b/lib/listen/adapter/windows.rb
index 35dcca7b..d732482a 100644
--- a/lib/listen/adapter/windows.rb
+++ b/lib/listen/adapter/windows.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   module Adapter
     # Adapter implementation for Windows `wdm`.
diff --git a/lib/listen/backend.rb b/lib/listen/backend.rb
index ff254953..cab286c1 100644
--- a/lib/listen/backend.rb
+++ b/lib/listen/backend.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/adapter'
 require 'listen/adapter/base'
 require 'listen/adapter/config'
diff --git a/lib/listen/change.rb b/lib/listen/change.rb
index 3d49c79e..e7a6e086 100644
--- a/lib/listen/change.rb
+++ b/lib/listen/change.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/file'
 require 'listen/directory'
 
diff --git a/lib/listen/cli.rb b/lib/listen/cli.rb
index 851f063c..ef1ae8a3 100644
--- a/lib/listen/cli.rb
+++ b/lib/listen/cli.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thor'
 require 'listen'
 require 'logger'
diff --git a/lib/listen/directory.rb b/lib/listen/directory.rb
index 4a4d78ea..5f76e893 100644
--- a/lib/listen/directory.rb
+++ b/lib/listen/directory.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'set'
 
 module Listen
diff --git a/lib/listen/event/config.rb b/lib/listen/event/config.rb
index 247572dd..65d7a667 100644
--- a/lib/listen/event/config.rb
+++ b/lib/listen/event/config.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   module Event
     class Config
diff --git a/lib/listen/event/loop.rb b/lib/listen/event/loop.rb
index 068b4a5a..221ea3d1 100644
--- a/lib/listen/event/loop.rb
+++ b/lib/listen/event/loop.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thread'
 
 require 'timeout'
diff --git a/lib/listen/event/processor.rb b/lib/listen/event/processor.rb
index 3ab045d2..a692e1fc 100644
--- a/lib/listen/event/processor.rb
+++ b/lib/listen/event/processor.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   module Event
     class Processor
diff --git a/lib/listen/event/queue.rb b/lib/listen/event/queue.rb
index b1be755f..c23c610e 100644
--- a/lib/listen/event/queue.rb
+++ b/lib/listen/event/queue.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thread'
 
 require 'forwardable'
diff --git a/lib/listen/file.rb b/lib/listen/file.rb
index 81183db3..aa90028c 100644
--- a/lib/listen/file.rb
+++ b/lib/listen/file.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'digest/md5'
 
 module Listen
diff --git a/lib/listen/fsm.rb b/lib/listen/fsm.rb
index b2c3cf77..80f1260c 100644
--- a/lib/listen/fsm.rb
+++ b/lib/listen/fsm.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Code copied from https://github.com/celluloid/celluloid-fsm
 
 require 'thread'
diff --git a/lib/listen/listener.rb b/lib/listen/listener.rb
index 664c3e7f..eb795b81 100644
--- a/lib/listen/listener.rb
+++ b/lib/listen/listener.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'English'
 
 require 'listen/version'
diff --git a/lib/listen/listener/config.rb b/lib/listen/listener/config.rb
index d1353227..da459320 100644
--- a/lib/listen/listener/config.rb
+++ b/lib/listen/listener/config.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   class Listener
     class Config
diff --git a/lib/listen/logger.rb b/lib/listen/logger.rb
index b0e6333e..3c1bdf3f 100644
--- a/lib/listen/logger.rb
+++ b/lib/listen/logger.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   def self.logger
     @logger ||= nil
diff --git a/lib/listen/options.rb b/lib/listen/options.rb
index 7ae36a7f..18e7d1ba 100644
--- a/lib/listen/options.rb
+++ b/lib/listen/options.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   class Options
     def initialize(opts, defaults)
diff --git a/lib/listen/queue_optimizer.rb b/lib/listen/queue_optimizer.rb
index a7bc91a7..d5a01db1 100644
--- a/lib/listen/queue_optimizer.rb
+++ b/lib/listen/queue_optimizer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   class QueueOptimizer
     class Config
diff --git a/lib/listen/record.rb b/lib/listen/record.rb
index 25e29376..5871ad1c 100644
--- a/lib/listen/record.rb
+++ b/lib/listen/record.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thread'
 require 'listen/record/entry'
 require 'listen/record/symlink_detector'
diff --git a/lib/listen/record/entry.rb b/lib/listen/record/entry.rb
index 0e3ea106..62ccb094 100644
--- a/lib/listen/record/entry.rb
+++ b/lib/listen/record/entry.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   # @private api
   class Record
diff --git a/lib/listen/record/symlink_detector.rb b/lib/listen/record/symlink_detector.rb
index 58840925..341ed3ab 100644
--- a/lib/listen/record/symlink_detector.rb
+++ b/lib/listen/record/symlink_detector.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'set'
 
 module Listen
diff --git a/lib/listen/silencer.rb b/lib/listen/silencer.rb
index 190f2b3e..9b9703e4 100644
--- a/lib/listen/silencer.rb
+++ b/lib/listen/silencer.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   class Silencer
     # The default list of directories that get ignored.
diff --git a/lib/listen/silencer/controller.rb b/lib/listen/silencer/controller.rb
index a07e0ae1..bb94d4bf 100644
--- a/lib/listen/silencer/controller.rb
+++ b/lib/listen/silencer/controller.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   class Silencer
     class Controller
diff --git a/lib/listen/version.rb b/lib/listen/version.rb
index 8be6f3fb..7447cf12 100644
--- a/lib/listen/version.rb
+++ b/lib/listen/version.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Listen
   VERSION = '3.2.1'.freeze
 end
diff --git a/spec/acceptance/listen_spec.rb b/spec/acceptance/listen_spec.rb
index 07556f23..26d77c3c 100644
--- a/spec/acceptance/listen_spec.rb
+++ b/spec/acceptance/listen_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # encoding: UTF-8
 
 RSpec.describe 'Listen', acceptance: true do
diff --git a/spec/lib/listen/adapter/base_spec.rb b/spec/lib/listen/adapter/base_spec.rb
index a0a65149..eac8daf3 100644
--- a/spec/lib/listen/adapter/base_spec.rb
+++ b/spec/lib/listen/adapter/base_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Adapter::Base do
   class FakeAdapter < described_class
     def initialize(config)
diff --git a/spec/lib/listen/adapter/bsd_spec.rb b/spec/lib/listen/adapter/bsd_spec.rb
index 1ffe1506..e09dd57f 100644
--- a/spec/lib/listen/adapter/bsd_spec.rb
+++ b/spec/lib/listen/adapter/bsd_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Adapter::BSD do
   describe 'class' do
     subject { described_class }
diff --git a/spec/lib/listen/adapter/config_spec.rb b/spec/lib/listen/adapter/config_spec.rb
index 4a3315cc..398f3d9f 100644
--- a/spec/lib/listen/adapter/config_spec.rb
+++ b/spec/lib/listen/adapter/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/adapter/config'
 
 RSpec.describe Listen::Adapter::Config do
diff --git a/spec/lib/listen/adapter/darwin_spec.rb b/spec/lib/listen/adapter/darwin_spec.rb
index 364d78bc..4c53e436 100644
--- a/spec/lib/listen/adapter/darwin_spec.rb
+++ b/spec/lib/listen/adapter/darwin_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This is just so stubs work
 require 'rb-fsevent'
 
diff --git a/spec/lib/listen/adapter/linux_spec.rb b/spec/lib/listen/adapter/linux_spec.rb
index 58519413..2cb7dd34 100644
--- a/spec/lib/listen/adapter/linux_spec.rb
+++ b/spec/lib/listen/adapter/linux_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Adapter::Linux do
   describe 'class' do
     subject { described_class }
diff --git a/spec/lib/listen/adapter/polling_spec.rb b/spec/lib/listen/adapter/polling_spec.rb
index ade5e9ee..4cad580a 100644
--- a/spec/lib/listen/adapter/polling_spec.rb
+++ b/spec/lib/listen/adapter/polling_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 include Listen
 
 RSpec.describe Adapter::Polling do
diff --git a/spec/lib/listen/adapter/windows_spec.rb b/spec/lib/listen/adapter/windows_spec.rb
index 0d5216f3..2f65bb20 100644
--- a/spec/lib/listen/adapter/windows_spec.rb
+++ b/spec/lib/listen/adapter/windows_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Adapter::Windows do
   describe 'class' do
     subject { described_class }
diff --git a/spec/lib/listen/adapter_spec.rb b/spec/lib/listen/adapter_spec.rb
index e894ab3b..be19765b 100644
--- a/spec/lib/listen/adapter_spec.rb
+++ b/spec/lib/listen/adapter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Adapter do
   let(:listener) { instance_double(Listen::Listener, options: {}) }
   before do
diff --git a/spec/lib/listen/backend_spec.rb b/spec/lib/listen/backend_spec.rb
index 3c0f82b9..3bc9a9b3 100644
--- a/spec/lib/listen/backend_spec.rb
+++ b/spec/lib/listen/backend_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/backend'
 
 RSpec.describe Listen::Backend do
diff --git a/spec/lib/listen/change_spec.rb b/spec/lib/listen/change_spec.rb
index 73bed147..1aca3b31 100644
--- a/spec/lib/listen/change_spec.rb
+++ b/spec/lib/listen/change_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Change do
   let(:config) { instance_double(Listen::Change::Config) }
   let(:dir) { instance_double(Pathname) }
diff --git a/spec/lib/listen/cli_spec.rb b/spec/lib/listen/cli_spec.rb
index 63ee7373..3b53b1b4 100644
--- a/spec/lib/listen/cli_spec.rb
+++ b/spec/lib/listen/cli_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/cli'
 
 RSpec.describe Listen::CLI do
diff --git a/spec/lib/listen/directory_spec.rb b/spec/lib/listen/directory_spec.rb
index 0cfdcaff..392e2c6d 100644
--- a/spec/lib/listen/directory_spec.rb
+++ b/spec/lib/listen/directory_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 include Listen
 
 RSpec.describe Directory do
diff --git a/spec/lib/listen/event/config_spec.rb b/spec/lib/listen/event/config_spec.rb
index 19827cff..681c6076 100644
--- a/spec/lib/listen/event/config_spec.rb
+++ b/spec/lib/listen/event/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/event/config'
 
 RSpec.describe Listen::Event::Config do
diff --git a/spec/lib/listen/event/loop_spec.rb b/spec/lib/listen/event/loop_spec.rb
index c0094261..7709c993 100644
--- a/spec/lib/listen/event/loop_spec.rb
+++ b/spec/lib/listen/event/loop_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'thread'
 require 'listen/event/config'
 require 'listen/event/loop'
diff --git a/spec/lib/listen/event/processor_spec.rb b/spec/lib/listen/event/processor_spec.rb
index 701471ff..3bf32b56 100644
--- a/spec/lib/listen/event/processor_spec.rb
+++ b/spec/lib/listen/event/processor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/event/processor'
 require 'listen/event/config'
 
diff --git a/spec/lib/listen/event/queue_spec.rb b/spec/lib/listen/event/queue_spec.rb
index dd540615..345a10a3 100644
--- a/spec/lib/listen/event/queue_spec.rb
+++ b/spec/lib/listen/event/queue_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/event/queue'
 
 # TODO: not part of listener really
diff --git a/spec/lib/listen/file_spec.rb b/spec/lib/listen/file_spec.rb
index 24114d76..cc5986c5 100644
--- a/spec/lib/listen/file_spec.rb
+++ b/spec/lib/listen/file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::File do
   let(:record) do
     instance_double(
diff --git a/spec/lib/listen/fsm_spec.rb b/spec/lib/listen/fsm_spec.rb
index 35b30311..a4395f28 100644
--- a/spec/lib/listen/fsm_spec.rb
+++ b/spec/lib/listen/fsm_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::FSM do
   context 'simple FSM' do
     class SpecSimpleFsm
diff --git a/spec/lib/listen/listener/config_spec.rb b/spec/lib/listen/listener/config_spec.rb
index 2f658ad6..5136e703 100644
--- a/spec/lib/listen/listener/config_spec.rb
+++ b/spec/lib/listen/listener/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/listener/config'
 RSpec.describe Listen::Listener::Config do
   describe 'options' do
diff --git a/spec/lib/listen/listener_spec.rb b/spec/lib/listen/listener_spec.rb
index c83959a5..5a9171e2 100644
--- a/spec/lib/listen/listener_spec.rb
+++ b/spec/lib/listen/listener_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 include Listen
 
 RSpec.describe Listener do
diff --git a/spec/lib/listen/queue_optimizer_spec.rb b/spec/lib/listen/queue_optimizer_spec.rb
index 04060a7e..b13d8c25 100644
--- a/spec/lib/listen/queue_optimizer_spec.rb
+++ b/spec/lib/listen/queue_optimizer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::QueueOptimizer do
   let(:config) { instance_double(Listen::QueueOptimizer::Config) }
   subject { described_class.new(config) }
diff --git a/spec/lib/listen/record_spec.rb b/spec/lib/listen/record_spec.rb
index cd64e932..3857c1d0 100644
--- a/spec/lib/listen/record_spec.rb
+++ b/spec/lib/listen/record_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen::Record do
   let(:dir) { instance_double(Pathname, to_s: '/dir') }
   let(:record) { Listen::Record.new(dir) }
diff --git a/spec/lib/listen/silencer/controller_spec.rb b/spec/lib/listen/silencer/controller_spec.rb
index e24579a1..984630cc 100644
--- a/spec/lib/listen/silencer/controller_spec.rb
+++ b/spec/lib/listen/silencer/controller_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'listen/silencer/controller'
 
 RSpec.describe Listen::Silencer::Controller do
diff --git a/spec/lib/listen/silencer_spec.rb b/spec/lib/listen/silencer_spec.rb
index 5e30f09e..f1d80e72 100644
--- a/spec/lib/listen/silencer_spec.rb
+++ b/spec/lib/listen/silencer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec::Matchers.define :accept do |type, path|
   match { |actual| !actual.silenced?(Pathname(path), type) }
 end
diff --git a/spec/lib/listen_spec.rb b/spec/lib/listen_spec.rb
index 56c319ac..c9de0cd4 100644
--- a/spec/lib/listen_spec.rb
+++ b/spec/lib/listen_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Listen do
   let(:listener) { instance_double(Listen::Listener, stop: nil) }
 
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 61d9991c..33e151fb 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # TODO: reduce requires everwhere and be more strict about it
 require 'listen'
 
diff --git a/spec/support/acceptance_helper.rb b/spec/support/acceptance_helper.rb
index 39fd0563..0a7f9673 100644
--- a/spec/support/acceptance_helper.rb
+++ b/spec/support/acceptance_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 {
   modification: :modified,
   addition: :added,
diff --git a/spec/support/fixtures_helper.rb b/spec/support/fixtures_helper.rb
index ff87e4ac..b2400f93 100644
--- a/spec/support/fixtures_helper.rb
+++ b/spec/support/fixtures_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'tmpdir'
 
 include FileUtils
diff --git a/spec/support/platform_helper.rb b/spec/support/platform_helper.rb
index 4505fe64..8168fc03 100644
--- a/spec/support/platform_helper.rb
+++ b/spec/support/platform_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 def darwin?
   RbConfig::CONFIG['target_os'] =~ /darwin/i
 end