rubocop: enable the Style/FrozenStringLiteralComment cop

This will greatly ease Pry support on Ruby 3.0 (when it's out).

82 files changed, 164 insertions, 0 deletions

diff --git a/spec/block_command_spec.rb b/spec/block_command_spec.rb
index 1a57e96a..915cbe58 100644
--- a/spec/block_command_spec.rb
+++ b/spec/block_command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::BlockCommand do
   subject { Class.new(described_class).new }
 
diff --git a/spec/class_command_spec.rb b/spec/class_command_spec.rb
index 8d7d7484..59151d62 100644
--- a/spec/class_command_spec.rb
+++ b/spec/class_command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::ClassCommand do
   describe ".inherited" do
     context "when match is defined" do
diff --git a/spec/cli_spec.rb b/spec/cli_spec.rb
index b9c8ee46..93625f79 100644
--- a/spec/cli_spec.rb
+++ b/spec/cli_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::CLI do
   before { described_class.reset }
 
diff --git a/spec/code_object_spec.rb b/spec/code_object_spec.rb
index 8cee8b66..ef670e00 100644
--- a/spec/code_object_spec.rb
+++ b/spec/code_object_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::CodeObject do
   let(:pry) do
     Pry.new.tap { |p| p.binding_stack = [binding] }
diff --git a/spec/code_spec.rb b/spec/code_spec.rb
index 0d2c2d4d..4ae2ca0b 100644
--- a/spec/code_spec.rb
+++ b/spec/code_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'method_source'
 require 'tempfile'
 
diff --git a/spec/color_printer_spec.rb b/spec/color_printer_spec.rb
index 8347a348..3c9048ec 100644
--- a/spec/color_printer_spec.rb
+++ b/spec/color_printer_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::ColorPrinter do
   let(:output) { StringIO.new }
 
diff --git a/spec/command_integration_spec.rb b/spec/command_integration_spec.rb
index 98e799a4..c1b63052 100644
--- a/spec/command_integration_spec.rb
+++ b/spec/command_integration_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "commands" do
   before do
     @str_output = StringIO.new
diff --git a/spec/command_set_spec.rb b/spec/command_set_spec.rb
index 1cc381d6..fc67d140 100644
--- a/spec/command_set_spec.rb
+++ b/spec/command_set_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::CommandSet do
   let(:set) do
     Pry::CommandSet.new { import(Pry::Commands) }
diff --git a/spec/command_spec.rb b/spec/command_spec.rb
index 56ee27b3..b676be81 100644
--- a/spec/command_spec.rb
+++ b/spec/command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'stringio'
 
 RSpec.describe Pry::Command do
diff --git a/spec/command_state_spec.rb b/spec/command_state_spec.rb
index 10097b2b..264b772c 100644
--- a/spec/command_state_spec.rb
+++ b/spec/command_state_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::CommandState do
   describe ".default" do
     it "returns the default command state" do
diff --git a/spec/commands/amend_line_spec.rb b/spec/commands/amend_line_spec.rb
index 29b68f80..edf50f23 100644
--- a/spec/commands/amend_line_spec.rb
+++ b/spec/commands/amend_line_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "amend-line" do
   before do
     @t = pry_tester
diff --git a/spec/commands/bang_spec.rb b/spec/commands/bang_spec.rb
index d48bd6da..e07964ec 100644
--- a/spec/commands/bang_spec.rb
+++ b/spec/commands/bang_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "!" do
   before do
     @t = pry_tester
diff --git a/spec/commands/cat/file_formatter_spec.rb b/spec/commands/cat/file_formatter_spec.rb
index a255a54f..4360f071 100644
--- a/spec/commands/cat/file_formatter_spec.rb
+++ b/spec/commands/cat/file_formatter_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Command::Cat::FileFormatter do
   before do
     @p   = Pry.new
diff --git a/spec/commands/cat_spec.rb b/spec/commands/cat_spec.rb
index a2c3ecba..8ed3ed8a 100644
--- a/spec/commands/cat_spec.rb
+++ b/spec/commands/cat_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'tempfile'
 
 describe "cat" do
diff --git a/spec/commands/cd_spec.rb b/spec/commands/cd_spec.rb
index 5ea64861..9777bddb 100644
--- a/spec/commands/cd_spec.rb
+++ b/spec/commands/cd_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe 'cd' do
   before do
     @o = Object.new
diff --git a/spec/commands/clear_screen_spec.rb b/spec/commands/clear_screen_spec.rb
index 152201d2..663e3717 100644
--- a/spec/commands/clear_screen_spec.rb
+++ b/spec/commands/clear_screen_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe "clear-screen" do
   before do
     @t = pry_tester
diff --git a/spec/commands/disable_pry_spec.rb b/spec/commands/disable_pry_spec.rb
index af5fa80a..db90a5cc 100644
--- a/spec/commands/disable_pry_spec.rb
+++ b/spec/commands/disable_pry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "disable-pry" do
   before do
     @t = pry_tester
diff --git a/spec/commands/edit_spec.rb b/spec/commands/edit_spec.rb
index cc741053..925a9425 100644
--- a/spec/commands/edit_spec.rb
+++ b/spec/commands/edit_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'pathname'
 require 'tempfile'
 
diff --git a/spec/commands/exit_all_spec.rb b/spec/commands/exit_all_spec.rb
index 640fa17f..aa3c705b 100644
--- a/spec/commands/exit_all_spec.rb
+++ b/spec/commands/exit_all_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "exit-all" do
   before { @pry = Pry.new }
 
diff --git a/spec/commands/exit_program_spec.rb b/spec/commands/exit_program_spec.rb
index dcb2bb71..58bda763 100644
--- a/spec/commands/exit_program_spec.rb
+++ b/spec/commands/exit_program_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "exit-program" do
   it 'should raise SystemExit' do
     expect { pry_eval('exit-program') }.to raise_error SystemExit
diff --git a/spec/commands/exit_spec.rb b/spec/commands/exit_spec.rb
index 2b4da7e5..3bbf5f5c 100644
--- a/spec/commands/exit_spec.rb
+++ b/spec/commands/exit_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "exit" do
   before { @pry = Pry.new(target: :outer, output: StringIO.new) }
 
diff --git a/spec/commands/find_method_spec.rb b/spec/commands/find_method_spec.rb
index f584f3b5..7be22752 100644
--- a/spec/commands/find_method_spec.rb
+++ b/spec/commands/find_method_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "find-method" do
   MyKlass = Class.new do
     def hello
diff --git a/spec/commands/help_spec.rb b/spec/commands/help_spec.rb
index 59e451c9..0e748a00 100644
--- a/spec/commands/help_spec.rb
+++ b/spec/commands/help_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "help" do
   before do
     @oldset = Pry.config.commands
diff --git a/spec/commands/hist_spec.rb b/spec/commands/hist_spec.rb
index 558b4f99..2fbbffb6 100644
--- a/spec/commands/hist_spec.rb
+++ b/spec/commands/hist_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "hist" do
   before do
     Pry.history.clear
diff --git a/spec/commands/jump_to_spec.rb b/spec/commands/jump_to_spec.rb
index 48c82f5f..c8f8f5c7 100644
--- a/spec/commands/jump_to_spec.rb
+++ b/spec/commands/jump_to_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe "jump-to" do
   let(:obj) { Object.new }
 
diff --git a/spec/commands/ls_spec.rb b/spec/commands/ls_spec.rb
index e147f726..f3ef8f9b 100644
--- a/spec/commands/ls_spec.rb
+++ b/spec/commands/ls_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "ls" do
   describe "bug #1407" do
     it "behaves as usual when a method of the same name exists." do
diff --git a/spec/commands/play_spec.rb b/spec/commands/play_spec.rb
index f82bc645..000f6fe5 100644
--- a/spec/commands/play_spec.rb
+++ b/spec/commands/play_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # This command needs a TONNE more tests for it, but i can't figure out
 # how to do them yet, and i really want to release. Sorry. Someone
 # come along and do a better job.
diff --git a/spec/commands/raise_up_spec.rb b/spec/commands/raise_up_spec.rb
index 39b2f127..dbb45f91 100644
--- a/spec/commands/raise_up_spec.rb
+++ b/spec/commands/raise_up_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "raise-up" do
   before do
     @self  = "Pad.self = self"
diff --git a/spec/commands/reload_code_spec.rb b/spec/commands/reload_code_spec.rb
index b7fe743f..845ee117 100644
--- a/spec/commands/reload_code_spec.rb
+++ b/spec/commands/reload_code_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "reload_code" do
   describe "reload_current_file" do
     it 'raises an error source code not found' do
diff --git a/spec/commands/ri_command_spec.rb b/spec/commands/ri_command_spec.rb
index 9fc4468a..0429019d 100644
--- a/spec/commands/ri_command_spec.rb
+++ b/spec/commands/ri_command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "ri" do
   it "prints an error message without an argument" do
     expect(pry_eval("ri")).to include(
diff --git a/spec/commands/save_file_spec.rb b/spec/commands/save_file_spec.rb
index 902ac926..9dd80966 100644
--- a/spec/commands/save_file_spec.rb
+++ b/spec/commands/save_file_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'tempfile'
 
 describe "save-file" do
diff --git a/spec/commands/shell_command_spec.rb b/spec/commands/shell_command_spec.rb
index 62526b3c..f66207b4 100644
--- a/spec/commands/shell_command_spec.rb
+++ b/spec/commands/shell_command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Command::ShellCommand do
   describe 'cd' do
     before do
diff --git a/spec/commands/show_doc_spec.rb b/spec/commands/show_doc_spec.rb
index e0bba4da..67ce1bc9 100644
--- a/spec/commands/show_doc_spec.rb
+++ b/spec/commands/show_doc_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "fixtures/show_source_doc_examples"
 
 describe "show-doc" do
diff --git a/spec/commands/show_input_spec.rb b/spec/commands/show_input_spec.rb
index 8fc82b3a..3953dbf3 100644
--- a/spec/commands/show_input_spec.rb
+++ b/spec/commands/show_input_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "show-input" do
   before do
     @t = pry_tester
diff --git a/spec/commands/show_source_spec.rb b/spec/commands/show_source_spec.rb
index 13bb86e9..fc921a9d 100644
--- a/spec/commands/show_source_spec.rb
+++ b/spec/commands/show_source_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "fixtures/show_source_doc_examples"
 
 describe "show-source" do
diff --git a/spec/commands/watch_expression_spec.rb b/spec/commands/watch_expression_spec.rb
index 04f26d10..08f3d107 100644
--- a/spec/commands/watch_expression_spec.rb
+++ b/spec/commands/watch_expression_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "watch expression" do
   # Custom eval that will:
   # 1) Create an instance of pry that can use for multiple calls
diff --git a/spec/commands/whereami_spec.rb b/spec/commands/whereami_spec.rb
index 1ccac2ef..aff868ce 100644
--- a/spec/commands/whereami_spec.rb
+++ b/spec/commands/whereami_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'method_source'
 
 describe "whereami" do
diff --git a/spec/commands/wtf_spec.rb b/spec/commands/wtf_spec.rb
index 0a224fa5..ace8cbf3 100644
--- a/spec/commands/wtf_spec.rb
+++ b/spec/commands/wtf_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "wtf?!" do
   let(:tester) do
     pry_tester do
diff --git a/spec/completion_spec.rb b/spec/completion_spec.rb
index 4216ea74..5df577f5 100644
--- a/spec/completion_spec.rb
+++ b/spec/completion_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "readline" unless defined?(Readline)
 require "pry/input_completer"
 
diff --git a/spec/config/attributable_spec.rb b/spec/config/attributable_spec.rb
index c0c2b167..9b6ea561 100644
--- a/spec/config/attributable_spec.rb
+++ b/spec/config/attributable_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Config::Attributable do
   subject { klass.new }
 
diff --git a/spec/config/lazy_value_spec.rb b/spec/config/lazy_value_spec.rb
index dc2aaa1e..7b9f28f3 100644
--- a/spec/config/lazy_value_spec.rb
+++ b/spec/config/lazy_value_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Config::LazyValue do
   describe "#call" do
     subject { described_class.new { rand } }
diff --git a/spec/config/memoized_value_spec.rb b/spec/config/memoized_value_spec.rb
index 1601bff2..22e278dc 100644
--- a/spec/config/memoized_value_spec.rb
+++ b/spec/config/memoized_value_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Config::MemoizedValue do
   describe "#call" do
     subject { described_class.new { rand } }
diff --git a/spec/config/value_spec.rb b/spec/config/value_spec.rb
index efb8eca4..7ddd0151 100644
--- a/spec/config/value_spec.rb
+++ b/spec/config/value_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Config::Value do
   describe "#call" do
     context "when given value is a MemoizedValue" do
diff --git a/spec/config_spec.rb b/spec/config_spec.rb
index 13aa52aa..d42d4d1e 100644
--- a/spec/config_spec.rb
+++ b/spec/config_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Config do
   specify { expect(subject.input).to respond_to(:readline) }
   specify { expect(subject.output).to be_an(IO) }
diff --git a/spec/control_d_handler_spec.rb b/spec/control_d_handler_spec.rb
index 030cefd6..1306bdc3 100644
--- a/spec/control_d_handler_spec.rb
+++ b/spec/control_d_handler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::ControlDHandler do
   context "when given eval string is non-empty" do
     let(:pry_instance) do
diff --git a/spec/documentation_helper_spec.rb b/spec/documentation_helper_spec.rb
index c6395774..8da62a29 100644
--- a/spec/documentation_helper_spec.rb
+++ b/spec/documentation_helper_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Helpers::DocumentationHelpers do
   before do
     @helper = Pry::Helpers::DocumentationHelpers
diff --git a/spec/editor_spec.rb b/spec/editor_spec.rb
index ea4c31d7..3410cbe7 100644
--- a/spec/editor_spec.rb
+++ b/spec/editor_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'pathname'
 
 describe Pry::Editor do
diff --git a/spec/exception_handler_spec.rb b/spec/exception_handler_spec.rb
index 62138153..b1608509 100644
--- a/spec/exception_handler_spec.rb
+++ b/spec/exception_handler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::ExceptionHandler do
   describe ".handle_exception" do
     let(:output) { StringIO.new }
diff --git a/spec/fixtures/Gemfile b/spec/fixtures/Gemfile
index 20b4d4ae..ebc45888 100644
--- a/spec/fixtures/Gemfile
+++ b/spec/fixtures/Gemfile
@@ -1 +1,3 @@
+# frozen_string_literal: true
+
 source 'https://rubygems.org'
diff --git a/spec/fixtures/candidate_helper1.rb b/spec/fixtures/candidate_helper1.rb
index 7833d52f..ec431807 100644
--- a/spec/fixtures/candidate_helper1.rb
+++ b/spec/fixtures/candidate_helper1.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # rank 0
 class CandidateTest
   def test1; end
diff --git a/spec/fixtures/candidate_helper2.rb b/spec/fixtures/candidate_helper2.rb
index 9de72c8d..06bb0475 100644
--- a/spec/fixtures/candidate_helper2.rb
+++ b/spec/fixtures/candidate_helper2.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # rank 1
 class CandidateTest
   def test4; end
diff --git a/spec/fixtures/show_source_doc_examples.rb b/spec/fixtures/show_source_doc_examples.rb
index bb24960c..dad53e06 100644
--- a/spec/fixtures/show_source_doc_examples.rb
+++ b/spec/fixtures/show_source_doc_examples.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # used by show_source_spec.rb and show_doc_spec.rb
 class TestClassForShowSource
   # doc
diff --git a/spec/fixtures/whereami_helper.rb b/spec/fixtures/whereami_helper.rb
index 6aea145e..be6d28bb 100644
--- a/spec/fixtures/whereami_helper.rb
+++ b/spec/fixtures/whereami_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # rubocop:disable Layout/EmptyLineBetweenDefs
 class Cor
   def a; end
diff --git a/spec/helpers/command_helpers_spec.rb b/spec/helpers/command_helpers_spec.rb
index 0e696cc5..7cc8f53d 100644
--- a/spec/helpers/command_helpers_spec.rb
+++ b/spec/helpers/command_helpers_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Helpers::CommandHelpers do
   describe "#temp_file" do
     it "yields a tempfile" do
diff --git a/spec/helpers/table_spec.rb b/spec/helpers/table_spec.rb
index 8aceac9c..66b3acfa 100644
--- a/spec/helpers/table_spec.rb
+++ b/spec/helpers/table_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe 'Formatting Table' do
   it 'knows about colorized fitting' do
     t = Pry::Helpers::Table.new %w[hihi], column_count: 1
diff --git a/spec/history_spec.rb b/spec/history_spec.rb
index 43bf55a2..32eadfb3 100644
--- a/spec/history_spec.rb
+++ b/spec/history_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'tempfile'
 require 'rbconfig'
 
diff --git a/spec/hooks_spec.rb b/spec/hooks_spec.rb
index 465ed236..0b8d6f9c 100644
--- a/spec/hooks_spec.rb
+++ b/spec/hooks_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Hooks do
   before do
     @hooks = Pry::Hooks.new
diff --git a/spec/indent_spec.rb b/spec/indent_spec.rb
index 24017441..aa48379f 100644
--- a/spec/indent_spec.rb
+++ b/spec/indent_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # Please keep in mind that any hash signs ("#") in the heredoc strings are
 # placed on purpose. Without these editors might remove the whitespace on empty
 # lines.
diff --git a/spec/integration/bundler_spec.rb b/spec/integration/bundler_spec.rb
index 7b98822b..3e8d146f 100644
--- a/spec/integration/bundler_spec.rb
+++ b/spec/integration/bundler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rbconfig'
 
 RSpec.describe 'Bundler' do
diff --git a/spec/integration/cli_spec.rb b/spec/integration/cli_spec.rb
index 306dcd38..0ea2a12a 100644
--- a/spec/integration/cli_spec.rb
+++ b/spec/integration/cli_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'rbconfig'
 
 RSpec.describe 'The bin/pry CLI' do
diff --git a/spec/integration/hanami_spec.rb b/spec/integration/hanami_spec.rb
index 1541a623..5fae6ef8 100644
--- a/spec/integration/hanami_spec.rb
+++ b/spec/integration/hanami_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "shellwords"
 require 'rbconfig'
 
diff --git a/spec/integration/readline_spec.rb b/spec/integration/readline_spec.rb
index 1407ca57..aaec5d5e 100644
--- a/spec/integration/readline_spec.rb
+++ b/spec/integration/readline_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 # These specs ensure that Pry doesn't require readline until the first time a
 # REPL is started.
 
diff --git a/spec/method/patcher_spec.rb b/spec/method/patcher_spec.rb
index 24524d02..98c96dd6 100644
--- a/spec/method/patcher_spec.rb
+++ b/spec/method/patcher_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Method::Patcher do
   # rubocop:disable Style/SingleLineMethods
   before do
diff --git a/spec/method_spec.rb b/spec/method_spec.rb
index 2d5a19f6..65ce0e96 100644
--- a/spec/method_spec.rb
+++ b/spec/method_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'set'
 
 describe Pry::Method do
diff --git a/spec/pager_spec.rb b/spec/pager_spec.rb
index 4df0aad6..9c61cb63 100644
--- a/spec/pager_spec.rb
+++ b/spec/pager_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "Pry::Pager" do
   describe "PageTracker" do
     before do
diff --git a/spec/prompt_spec.rb b/spec/prompt_spec.rb
index 58616cd5..04688d7e 100644
--- a/spec/prompt_spec.rb
+++ b/spec/prompt_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Prompt do
   describe ".[]" do
     it "accesses prompts" do
diff --git a/spec/pry_defaults_spec.rb b/spec/pry_defaults_spec.rb
index 24fa54c5..816481ff 100644
--- a/spec/pry_defaults_spec.rb
+++ b/spec/pry_defaults_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 _version = 1
 
 describe "test Pry defaults" do
diff --git a/spec/pry_output_spec.rb b/spec/pry_output_spec.rb
index 8f905d02..3850da62 100644
--- a/spec/pry_output_spec.rb
+++ b/spec/pry_output_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry do
   describe "output failsafe" do
     after { Pry.config.print = Pry::Config.new.print }
diff --git a/spec/pry_repl_spec.rb b/spec/pry_repl_spec.rb
index f407240a..946b92e8 100644
--- a/spec/pry_repl_spec.rb
+++ b/spec/pry_repl_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::REPL do
   it "should let you run commands in the middle of multiline expressions" do
     ReplTester.start do
diff --git a/spec/pry_spec.rb b/spec/pry_spec.rb
index da73c275..c320a905 100644
--- a/spec/pry_spec.rb
+++ b/spec/pry_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry do
   before do
     @str_output = StringIO.new
diff --git a/spec/pryrc_spec.rb b/spec/pryrc_spec.rb
index 338f6b7e..a7b5fc2a 100644
--- a/spec/pryrc_spec.rb
+++ b/spec/pryrc_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry do
   describe 'loading rc files' do
     before do
diff --git a/spec/ring_spec.rb b/spec/ring_spec.rb
index 2f023461..4c7efbb5 100644
--- a/spec/ring_spec.rb
+++ b/spec/ring_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::Ring do
   let(:ring) { described_class.new(3) }
 
diff --git a/spec/run_command_spec.rb b/spec/run_command_spec.rb
index af81d96a..8cbb8e14 100644
--- a/spec/run_command_spec.rb
+++ b/spec/run_command_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "Pry.run_command" do
   before do
     o = Object.new
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index b6111e27..c8315144 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 if ENV['COVERAGE']
   require 'simplecov'
   SimpleCov.start
diff --git a/spec/sticky_locals_spec.rb b/spec/sticky_locals_spec.rb
index 1fa75f87..ed6b29e0 100644
--- a/spec/sticky_locals_spec.rb
+++ b/spec/sticky_locals_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "Sticky locals (_file_ and friends)" do
   it 'locals should all exist upon initialization' do
     expect { pry_eval '_file_', '_dir_', '_ex_', 'pry_instance', '_' }
diff --git a/spec/support/mock_pry.rb b/spec/support/mock_pry.rb
index c7246111..555acee1 100644
--- a/spec/support/mock_pry.rb
+++ b/spec/support/mock_pry.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 def mock_pry(*args)
   args.flatten!
   binding = args.first.is_a?(Binding) ? args.shift : binding()
diff --git a/spec/support/repl_tester.rb b/spec/support/repl_tester.rb
index ea0419e7..b6e7585e 100644
--- a/spec/support/repl_tester.rb
+++ b/spec/support/repl_tester.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'delegate'
 
 # This is for super-high-level integration testing.
diff --git a/spec/syntax_checking_spec.rb b/spec/syntax_checking_spec.rb
index 9312c6a5..ec7f5b36 100644
--- a/spec/syntax_checking_spec.rb
+++ b/spec/syntax_checking_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry do
   before do
     @str_output = StringIO.new
diff --git a/spec/system_command_handler_spec.rb b/spec/system_command_handler_spec.rb
index 810fd606..45893e5d 100644
--- a/spec/system_command_handler_spec.rb
+++ b/spec/system_command_handler_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'stringio'
 
 RSpec.describe Pry::SystemCommandHandler do
diff --git a/spec/unrescued_exceptions_spec.rb b/spec/unrescued_exceptions_spec.rb
index 0874f0fa..592ac20f 100644
--- a/spec/unrescued_exceptions_spec.rb
+++ b/spec/unrescued_exceptions_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe "Pry.config.unrescued_exceptions" do
   before do
     @str_output = StringIO.new
diff --git a/spec/warning_spec.rb b/spec/warning_spec.rb
index 18bfa219..9c94ad5d 100644
--- a/spec/warning_spec.rb
+++ b/spec/warning_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 RSpec.describe Pry::Warning do
   describe "#warn" do
     it "prints message with file and line of the calling frame" do
diff --git a/spec/wrapped_module_spec.rb b/spec/wrapped_module_spec.rb
index f290fc76..a97affb9 100644
--- a/spec/wrapped_module_spec.rb
+++ b/spec/wrapped_module_spec.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe Pry::WrappedModule do
   describe "#initialize" do
     it "should raise an exception when a non-module is passed" do