Specify frozen_string_literal: true.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59121 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/lib/envutil.rb

@@ -1,5 +1,5 @@
 # -*- coding: us-ascii -*-
-# frozen_string_literal: false
+# frozen_string_literal: true
 require "open3"
 require "timeout"
 require_relative "find_executable"
@@ -159,7 +159,7 @@ module EnvUtil
   end
 
   def verbose_warning
-    class << (stderr = "")
+    class << (stderr = "".dup)
       alias write <<
     end
     stderr, $stderr, verbose, $VERBOSE = $stderr, stderr, $VERBOSE, true

test/lib/find_executable.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require "rbconfig"
 
 module EnvUtil

test/lib/iseq_loader_checker.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 
 begin
   require '-test-/iseq_load/iseq_load'

test/lib/leakchecker.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 class LeakChecker
   def initialize
     @fd_info = find_fds

test/lib/memory_status.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 begin
   require '-test-/memory_status.so'
 rescue LoadError

test/lib/minitest/autorun.rb

@@ -1,5 +1,5 @@
 # encoding: utf-8
-# frozen_string_literal: false
+# frozen_string_literal: true
 
 begin
   require 'rubygems'

test/lib/minitest/benchmark.rb

@@ -1,5 +1,5 @@
 # encoding: utf-8
-# frozen_string_literal: false
+# frozen_string_literal: true
 
 require 'minitest/unit'
 

test/lib/minitest/mock.rb

@@ -1,5 +1,5 @@
 # encoding: utf-8
-# frozen_string_literal: false
+# frozen_string_literal: true
 
 class MockExpectationError < StandardError; end # :nodoc:
 

test/lib/minitest/unit.rb

@@ -1,5 +1,5 @@
 # encoding: utf-8
-# frozen_string_literal: false
+# frozen_string_literal: true
 
 require "optparse"
 require "rbconfig"

test/lib/profile_test_all.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 #
 # purpose:
 #  Profile memory usage of each tests.

test/lib/test/unit.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 begin
   gem 'minitest', '< 5.0.0' if defined? Gem
 rescue Gem::LoadError

test/lib/test/unit/assertions.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'minitest/unit'
 require 'pp'
 
@@ -452,7 +452,7 @@ EOT
 
       ms = instance_methods(true).map {|sym| sym.to_s }
       ms.grep(/\Arefute_/) do |m|
-        mname = ('assert_not_' << m.to_s[/.*?_(.*)/, 1])
+        mname = ('assert_not_'.dup << m.to_s[/.*?_(.*)/, 1])
         alias_method(mname, m) unless ms.include? mname
       end
       alias assert_include assert_includes
@@ -543,7 +543,7 @@ EOT
           if status.coredump?
             sigdesc << " (core dumped)"
           end
-          full_message = ''
+          full_message = ''.dup
           message = message.call if Proc === message
           if message and !message.empty?
             full_message << message << "\n"
@@ -828,7 +828,7 @@ eom
           end
           result = File.__send__(predicate, *args)
           result = !result if neg
-          mesg = "Expected file " << args.shift.inspect
+          mesg = "Expected file ".dup << args.shift.inspect
           mesg << "#{neg} to be #{predicate}"
           mesg << mu_pp(args).sub(/\A\[(.*)\]\z/m, '(\1)') unless args.empty?
           mesg << " #{failure_message}" if failure_message

test/lib/test/unit/parallel.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 $LOAD_PATH.unshift "#{File.dirname(__FILE__)}/../.."
 require 'test/unit'
 

test/lib/test/unit/testcase.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'test/unit/assertions'
 
 module Test

test/lib/tracepointchecker.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module TracePointChecker
   STATE = {
     count: 0,

test/lib/with_different_ofs.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module DifferentOFS
   module WithDifferentOFS
     def setup

test/lib/zombie_hunter.rb

@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module ZombieHunter
   def after_teardown
     super