From 3e92b635fb5422207b7bbdc924e292e51e21f040 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 16 Dec 2015 05:07:31 +0000
Subject: Add frozen_string_literal: false for all files

When you change this to true, you may need to add more tests.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53141 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/-ext-/array/test_resize.rb                          | 1 +
 test/-ext-/bignum/test_big2str.rb                        | 1 +
 test/-ext-/bignum/test_bigzero.rb                        | 1 +
 test/-ext-/bignum/test_div.rb                            | 1 +
 test/-ext-/bignum/test_mul.rb                            | 1 +
 test/-ext-/bignum/test_pack.rb                           | 1 +
 test/-ext-/bignum/test_str2big.rb                        | 1 +
 test/-ext-/bug_reporter/test_bug_reporter.rb             | 1 +
 test/-ext-/class/test_class2name.rb                      | 1 +
 test/-ext-/debug/test_debug.rb                           | 1 +
 test/-ext-/debug/test_profile_frames.rb                  | 1 +
 test/-ext-/exception/test_data_error.rb                  | 1 +
 test/-ext-/exception/test_enc_raise.rb                   | 1 +
 test/-ext-/exception/test_ensured.rb                     | 1 +
 test/-ext-/file/test_stat.rb                             | 1 +
 test/-ext-/float/test_nextafter.rb                       | 1 +
 test/-ext-/funcall/test_passing_block.rb                 | 1 +
 test/-ext-/gvl/test_last_thread.rb                       | 1 +
 test/-ext-/hash/test_delete.rb                           | 1 +
 test/-ext-/iseq_load/test_iseq_load.rb                   | 1 +
 test/-ext-/iter/test_iter_break.rb                       | 1 +
 test/-ext-/iter/test_yield_block.rb                      | 1 +
 test/-ext-/load/test_dot_dot.rb                          | 1 +
 test/-ext-/marshal/test_internal_ivar.rb                 | 1 +
 test/-ext-/marshal/test_usrmarshal.rb                    | 1 +
 test/-ext-/method/test_arity.rb                          | 1 +
 test/-ext-/num2int/test_num2int.rb                       | 1 +
 test/-ext-/path_to_class/test_path_to_class.rb           | 1 +
 test/-ext-/popen_deadlock/test_popen_deadlock.rb         | 1 +
 test/-ext-/postponed_job/test_postponed_job.rb           | 1 +
 test/-ext-/proc/test_bmethod.rb                          | 1 +
 test/-ext-/rational/test_rat.rb                          | 1 +
 test/-ext-/st/test_foreach.rb                            | 1 +
 test/-ext-/st/test_numhash.rb                            | 1 +
 test/-ext-/st/test_update.rb                             | 1 +
 test/-ext-/string/test_coderange.rb                      | 1 +
 test/-ext-/string/test_cstr.rb                           | 1 +
 test/-ext-/string/test_ellipsize.rb                      | 1 +
 test/-ext-/string/test_enc_associate.rb                  | 1 +
 test/-ext-/string/test_enc_str_buf_cat.rb                | 1 +
 test/-ext-/string/test_fstring.rb                        | 1 +
 test/-ext-/string/test_modify_expand.rb                  | 1 +
 test/-ext-/string/test_nofree.rb                         | 1 +
 test/-ext-/string/test_normalize.rb                      | 1 +
 test/-ext-/string/test_qsort.rb                          | 1 +
 test/-ext-/string/test_set_len.rb                        | 1 +
 test/-ext-/struct/test_member.rb                         | 1 +
 test/-ext-/symbol/test_inadvertent_creation.rb           | 1 +
 test/-ext-/symbol/test_type.rb                           | 1 +
 test/-ext-/test_bug-3571.rb                              | 1 +
 test/-ext-/test_bug-5832.rb                              | 1 +
 test/-ext-/test_notimplement.rb                          | 1 +
 test/-ext-/test_printf.rb                                | 1 +
 test/-ext-/test_recursion.rb                             | 1 +
 test/-ext-/time/test_new.rb                              | 1 +
 test/-ext-/tracepoint/test_tracepoint.rb                 | 1 +
 test/-ext-/typeddata/test_typeddata.rb                   | 1 +
 test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb | 1 +
 test/-ext-/win32/test_console_attr.rb                    | 1 +
 test/-ext-/win32/test_dln.rb                             | 1 +
 test/-ext-/win32/test_fd_setsize.rb                      | 1 +
 61 files changed, 61 insertions(+)

(limited to 'test/-ext-')

diff --git a/test/-ext-/array/test_resize.rb b/test/-ext-/array/test_resize.rb
index 8e526b5a0c..f6a368cb75 100644
--- a/test/-ext-/array/test_resize.rb
+++ b/test/-ext-/array/test_resize.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/array/resize'
 
diff --git a/test/-ext-/bignum/test_big2str.rb b/test/-ext-/bignum/test_big2str.rb
index 0af552ea70..4fae24eb34 100644
--- a/test/-ext-/bignum/test_big2str.rb
+++ b/test/-ext-/bignum/test_big2str.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/bignum"
 
diff --git a/test/-ext-/bignum/test_bigzero.rb b/test/-ext-/bignum/test_bigzero.rb
index f75c4590b8..8529e54456 100644
--- a/test/-ext-/bignum/test_bigzero.rb
+++ b/test/-ext-/bignum/test_bigzero.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/bignum"
 
diff --git a/test/-ext-/bignum/test_div.rb b/test/-ext-/bignum/test_div.rb
index 9c1a3c3d2a..9a8e93b081 100644
--- a/test/-ext-/bignum/test_div.rb
+++ b/test/-ext-/bignum/test_div.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/bignum"
 
diff --git a/test/-ext-/bignum/test_mul.rb b/test/-ext-/bignum/test_mul.rb
index 3e78247aa4..103a00fbad 100644
--- a/test/-ext-/bignum/test_mul.rb
+++ b/test/-ext-/bignum/test_mul.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/bignum"
 
diff --git a/test/-ext-/bignum/test_pack.rb b/test/-ext-/bignum/test_pack.rb
index f2a3df814e..04bf3e02de 100644
--- a/test/-ext-/bignum/test_pack.rb
+++ b/test/-ext-/bignum/test_pack.rb
@@ -1,4 +1,5 @@
 # coding: ASCII-8BIT
+# frozen_string_literal: false
 
 require 'test/unit'
 require "-test-/bignum"
diff --git a/test/-ext-/bignum/test_str2big.rb b/test/-ext-/bignum/test_str2big.rb
index 4304be88e9..3b5750154e 100644
--- a/test/-ext-/bignum/test_str2big.rb
+++ b/test/-ext-/bignum/test_str2big.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/bignum"
 
diff --git a/test/-ext-/bug_reporter/test_bug_reporter.rb b/test/-ext-/bug_reporter/test_bug_reporter.rb
index e68adeef06..fb37658c92 100644
--- a/test/-ext-/bug_reporter/test_bug_reporter.rb
+++ b/test/-ext-/bug_reporter/test_bug_reporter.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'tmpdir'
 
diff --git a/test/-ext-/class/test_class2name.rb b/test/-ext-/class/test_class2name.rb
index 070be5a130..e61964d9eb 100644
--- a/test/-ext-/class/test_class2name.rb
+++ b/test/-ext-/class/test_class2name.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/class"
 
diff --git a/test/-ext-/debug/test_debug.rb b/test/-ext-/debug/test_debug.rb
index ec506e0ca5..3804714d0d 100644
--- a/test/-ext-/debug/test_debug.rb
+++ b/test/-ext-/debug/test_debug.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/debug'
 
diff --git a/test/-ext-/debug/test_profile_frames.rb b/test/-ext-/debug/test_profile_frames.rb
index e257ef09b3..860652c0cd 100644
--- a/test/-ext-/debug/test_profile_frames.rb
+++ b/test/-ext-/debug/test_profile_frames.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/debug'
 
diff --git a/test/-ext-/exception/test_data_error.rb b/test/-ext-/exception/test_data_error.rb
index 53cbb28438..d33d8ca43f 100644
--- a/test/-ext-/exception/test_data_error.rb
+++ b/test/-ext-/exception/test_data_error.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 module Bug
diff --git a/test/-ext-/exception/test_enc_raise.rb b/test/-ext-/exception/test_enc_raise.rb
index a578b167ea..2bc7f02413 100644
--- a/test/-ext-/exception/test_enc_raise.rb
+++ b/test/-ext-/exception/test_enc_raise.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/exception'
 
diff --git a/test/-ext-/exception/test_ensured.rb b/test/-ext-/exception/test_ensured.rb
index 97d9794186..858245868b 100644
--- a/test/-ext-/exception/test_ensured.rb
+++ b/test/-ext-/exception/test_ensured.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 module Bug
diff --git a/test/-ext-/file/test_stat.rb b/test/-ext-/file/test_stat.rb
index b9aa132932..9eebcd97b9 100644
--- a/test/-ext-/file/test_stat.rb
+++ b/test/-ext-/file/test_stat.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/file"
 
diff --git a/test/-ext-/float/test_nextafter.rb b/test/-ext-/float/test_nextafter.rb
index e3a3e726c7..c131d1e413 100644
--- a/test/-ext-/float/test_nextafter.rb
+++ b/test/-ext-/float/test_nextafter.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/float"
 
diff --git a/test/-ext-/funcall/test_passing_block.rb b/test/-ext-/funcall/test_passing_block.rb
index 87aed2212c..fac7eaf953 100644
--- a/test/-ext-/funcall/test_passing_block.rb
+++ b/test/-ext-/funcall/test_passing_block.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class TestFuncall < Test::Unit::TestCase
diff --git a/test/-ext-/gvl/test_last_thread.rb b/test/-ext-/gvl/test_last_thread.rb
index cf5f28f4b6..3b297a5b31 100644
--- a/test/-ext-/gvl/test_last_thread.rb
+++ b/test/-ext-/gvl/test_last_thread.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class TestLastThread < Test::Unit::TestCase
 
   # [Bug #11237]
diff --git a/test/-ext-/hash/test_delete.rb b/test/-ext-/hash/test_delete.rb
index 13f3595482..e2ad3cbdbc 100644
--- a/test/-ext-/hash/test_delete.rb
+++ b/test/-ext-/hash/test_delete.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/hash'
 
diff --git a/test/-ext-/iseq_load/test_iseq_load.rb b/test/-ext-/iseq_load/test_iseq_load.rb
index 5dfd69a863..7eb8f4bfc8 100644
--- a/test/-ext-/iseq_load/test_iseq_load.rb
+++ b/test/-ext-/iseq_load/test_iseq_load.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class TestIseqLoad < Test::Unit::TestCase
diff --git a/test/-ext-/iter/test_iter_break.rb b/test/-ext-/iter/test_iter_break.rb
index 5bac6331fd..8c2379960a 100644
--- a/test/-ext-/iter/test_iter_break.rb
+++ b/test/-ext-/iter/test_iter_break.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/iter'
 
diff --git a/test/-ext-/iter/test_yield_block.rb b/test/-ext-/iter/test_yield_block.rb
index bec993c950..d4f1fa3c35 100644
--- a/test/-ext-/iter/test_yield_block.rb
+++ b/test/-ext-/iter/test_yield_block.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/iter'
 
diff --git a/test/-ext-/load/test_dot_dot.rb b/test/-ext-/load/test_dot_dot.rb
index 82aa10a95f..1b2c871608 100644
--- a/test/-ext-/load/test_dot_dot.rb
+++ b/test/-ext-/load/test_dot_dot.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class Test_DotDot < Test::Unit::TestCase
diff --git a/test/-ext-/marshal/test_internal_ivar.rb b/test/-ext-/marshal/test_internal_ivar.rb
index e0e2a72f54..51529667b5 100644
--- a/test/-ext-/marshal/test_internal_ivar.rb
+++ b/test/-ext-/marshal/test_internal_ivar.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/marshal/internal_ivar'
 
diff --git a/test/-ext-/marshal/test_usrmarshal.rb b/test/-ext-/marshal/test_usrmarshal.rb
index 8d8db012ac..263dcb8297 100644
--- a/test/-ext-/marshal/test_usrmarshal.rb
+++ b/test/-ext-/marshal/test_usrmarshal.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/marshal/usr'
 
diff --git a/test/-ext-/method/test_arity.rb b/test/-ext-/method/test_arity.rb
index 79ef23b34f..d0032c6a50 100644
--- a/test/-ext-/method/test_arity.rb
+++ b/test/-ext-/method/test_arity.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require '-test-/method'
 require 'test/unit'
 
diff --git a/test/-ext-/num2int/test_num2int.rb b/test/-ext-/num2int/test_num2int.rb
index f579659929..c00bb56833 100644
--- a/test/-ext-/num2int/test_num2int.rb
+++ b/test/-ext-/num2int/test_num2int.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/num2int/num2int'
 
diff --git a/test/-ext-/path_to_class/test_path_to_class.rb b/test/-ext-/path_to_class/test_path_to_class.rb
index fdf4097fde..57e3a9233a 100644
--- a/test/-ext-/path_to_class/test_path_to_class.rb
+++ b/test/-ext-/path_to_class/test_path_to_class.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class Test_PathToClass < Test::Unit::TestCase
diff --git a/test/-ext-/popen_deadlock/test_popen_deadlock.rb b/test/-ext-/popen_deadlock/test_popen_deadlock.rb
index 60ec6ccce4..97892e5008 100644
--- a/test/-ext-/popen_deadlock/test_popen_deadlock.rb
+++ b/test/-ext-/popen_deadlock/test_popen_deadlock.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 begin
   require '-test-/popen_deadlock/infinite_loop_dlsym'
 rescue LoadError
diff --git a/test/-ext-/postponed_job/test_postponed_job.rb b/test/-ext-/postponed_job/test_postponed_job.rb
index 032e35c055..da3b579eba 100644
--- a/test/-ext-/postponed_job/test_postponed_job.rb
+++ b/test/-ext-/postponed_job/test_postponed_job.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'thread'
 require '-test-/postponed_job'
diff --git a/test/-ext-/proc/test_bmethod.rb b/test/-ext-/proc/test_bmethod.rb
index 16927dcf7d..344f975755 100644
--- a/test/-ext-/proc/test_bmethod.rb
+++ b/test/-ext-/proc/test_bmethod.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/proc'
 
diff --git a/test/-ext-/rational/test_rat.rb b/test/-ext-/rational/test_rat.rb
index ef7e7fe535..626ffb9661 100644
--- a/test/-ext-/rational/test_rat.rb
+++ b/test/-ext-/rational/test_rat.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/rational"
 
diff --git a/test/-ext-/st/test_foreach.rb b/test/-ext-/st/test_foreach.rb
index 259b0a93b1..4b3eb870e4 100644
--- a/test/-ext-/st/test_foreach.rb
+++ b/test/-ext-/st/test_foreach.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/st/foreach'
 
diff --git a/test/-ext-/st/test_numhash.rb b/test/-ext-/st/test_numhash.rb
index 24dc87c1d9..97c3a755bb 100644
--- a/test/-ext-/st/test_numhash.rb
+++ b/test/-ext-/st/test_numhash.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/st/numhash"
 
diff --git a/test/-ext-/st/test_update.rb b/test/-ext-/st/test_update.rb
index 1b41d2bc03..db86eeb8d7 100644
--- a/test/-ext-/st/test_update.rb
+++ b/test/-ext-/st/test_update.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/st/update"
 
diff --git a/test/-ext-/string/test_coderange.rb b/test/-ext-/string/test_coderange.rb
index 31f5c871f5..18b256fcea 100644
--- a/test/-ext-/string/test_coderange.rb
+++ b/test/-ext-/string/test_coderange.rb
@@ -1,4 +1,5 @@
 # coding: ascii-8bit
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 require "rbconfig/sizeof"
diff --git a/test/-ext-/string/test_cstr.rb b/test/-ext-/string/test_cstr.rb
index 4be2cc98fa..f4ed520b2d 100644
--- a/test/-ext-/string/test_cstr.rb
+++ b/test/-ext-/string/test_cstr.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_ellipsize.rb b/test/-ext-/string/test_ellipsize.rb
index 23ccdb515b..d7947041d5 100644
--- a/test/-ext-/string/test_ellipsize.rb
+++ b/test/-ext-/string/test_ellipsize.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_enc_associate.rb b/test/-ext-/string/test_enc_associate.rb
index 2c84f49db1..4fad8e1cc8 100644
--- a/test/-ext-/string/test_enc_associate.rb
+++ b/test/-ext-/string/test_enc_associate.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_enc_str_buf_cat.rb b/test/-ext-/string/test_enc_str_buf_cat.rb
index c925affb41..72f903903c 100644
--- a/test/-ext-/string/test_enc_str_buf_cat.rb
+++ b/test/-ext-/string/test_enc_str_buf_cat.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_fstring.rb b/test/-ext-/string/test_fstring.rb
index 3ad9a4c312..39ed020892 100644
--- a/test/-ext-/string/test_fstring.rb
+++ b/test/-ext-/string/test_fstring.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/string'
 
diff --git a/test/-ext-/string/test_modify_expand.rb b/test/-ext-/string/test_modify_expand.rb
index cc19a47b91..5eb7a02b91 100644
--- a/test/-ext-/string/test_modify_expand.rb
+++ b/test/-ext-/string/test_modify_expand.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_nofree.rb b/test/-ext-/string/test_nofree.rb
index cb034a4b8f..86681e4652 100644
--- a/test/-ext-/string/test_nofree.rb
+++ b/test/-ext-/string/test_nofree.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class Test_StringNoFree < Test::Unit::TestCase
diff --git a/test/-ext-/string/test_normalize.rb b/test/-ext-/string/test_normalize.rb
index b270a45005..8c11bfe3d4 100644
--- a/test/-ext-/string/test_normalize.rb
+++ b/test/-ext-/string/test_normalize.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 require "tempfile"
diff --git a/test/-ext-/string/test_qsort.rb b/test/-ext-/string/test_qsort.rb
index 1a6dae0124..94aff8c3c4 100644
--- a/test/-ext-/string/test_qsort.rb
+++ b/test/-ext-/string/test_qsort.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/string/test_set_len.rb b/test/-ext-/string/test_set_len.rb
index 198129d72f..1c5252a5f6 100644
--- a/test/-ext-/string/test_set_len.rb
+++ b/test/-ext-/string/test_set_len.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/string"
 
diff --git a/test/-ext-/struct/test_member.rb b/test/-ext-/struct/test_member.rb
index 18e98085a0..5ee0adcf67 100644
--- a/test/-ext-/struct/test_member.rb
+++ b/test/-ext-/struct/test_member.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/struct"
 
diff --git a/test/-ext-/symbol/test_inadvertent_creation.rb b/test/-ext-/symbol/test_inadvertent_creation.rb
index 14afc90d74..073952fae3 100644
--- a/test/-ext-/symbol/test_inadvertent_creation.rb
+++ b/test/-ext-/symbol/test_inadvertent_creation.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/symbol"
 
diff --git a/test/-ext-/symbol/test_type.rb b/test/-ext-/symbol/test_type.rb
index ddd79561ab..32a700d273 100644
--- a/test/-ext-/symbol/test_type.rb
+++ b/test/-ext-/symbol/test_type.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/symbol"
 
diff --git a/test/-ext-/test_bug-3571.rb b/test/-ext-/test_bug-3571.rb
index d7c26d1ff0..dc9c92bd23 100644
--- a/test/-ext-/test_bug-3571.rb
+++ b/test/-ext-/test_bug-3571.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class Test_BUG_3571 < Test::Unit::TestCase
diff --git a/test/-ext-/test_bug-5832.rb b/test/-ext-/test_bug-5832.rb
index 11f8a52a95..6812e64e5e 100644
--- a/test/-ext-/test_bug-5832.rb
+++ b/test/-ext-/test_bug-5832.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require '-test-/bug-5832/bug'
 
 class Test_BUG_5832 < Test::Unit::TestCase
diff --git a/test/-ext-/test_notimplement.rb b/test/-ext-/test_notimplement.rb
index 7394126fb1..0eba7bdaf8 100644
--- a/test/-ext-/test_notimplement.rb
+++ b/test/-ext-/test_notimplement.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require '-test-/notimplement'
 
 class TestNotImplement < Test::Unit::TestCase
diff --git a/test/-ext-/test_printf.rb b/test/-ext-/test_printf.rb
index 1f06ad6300..4e4f5b4695 100644
--- a/test/-ext-/test_printf.rb
+++ b/test/-ext-/test_printf.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/printf"
 require_relative '../ruby/allpairs'
diff --git a/test/-ext-/test_recursion.rb b/test/-ext-/test_recursion.rb
index 06faf6dc7a..db7a853988 100644
--- a/test/-ext-/test_recursion.rb
+++ b/test/-ext-/test_recursion.rb
@@ -1,4 +1,5 @@
 # -*- coding: us-ascii -*-
+# frozen_string_literal: false
 require 'test/unit'
 
 class TestRecursion < Test::Unit::TestCase
diff --git a/test/-ext-/time/test_new.rb b/test/-ext-/time/test_new.rb
index 5ccf6f0a5d..699201fda5 100644
--- a/test/-ext-/time/test_new.rb
+++ b/test/-ext-/time/test_new.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/time"
 
diff --git a/test/-ext-/tracepoint/test_tracepoint.rb b/test/-ext-/tracepoint/test_tracepoint.rb
index b5a6e769d6..33d0c3e8e1 100644
--- a/test/-ext-/tracepoint/test_tracepoint.rb
+++ b/test/-ext-/tracepoint/test_tracepoint.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require '-test-/tracepoint'
 
diff --git a/test/-ext-/typeddata/test_typeddata.rb b/test/-ext-/typeddata/test_typeddata.rb
index 31fe32b20a..058b7b70c5 100644
--- a/test/-ext-/typeddata/test_typeddata.rb
+++ b/test/-ext-/typeddata/test_typeddata.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require "-test-/typeddata/typeddata"
 
diff --git a/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb b/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
index e88dbefac6..d9fc52ebb2 100644
--- a/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
+++ b/test/-ext-/wait_for_single_fd/test_wait_for_single_fd.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 class TestWaitForSingleFD < Test::Unit::TestCase
diff --git a/test/-ext-/win32/test_console_attr.rb b/test/-ext-/win32/test_console_attr.rb
index 3afb2d9378..e596e13469 100644
--- a/test/-ext-/win32/test_console_attr.rb
+++ b/test/-ext-/win32/test_console_attr.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 if /mswin|mingw/ =~ RUBY_PLATFORM and STDOUT.tty?
   require '-test-/win32/console'
   require 'io/console'
diff --git a/test/-ext-/win32/test_dln.rb b/test/-ext-/win32/test_dln.rb
index fe289d150f..fd5e453719 100644
--- a/test/-ext-/win32/test_dln.rb
+++ b/test/-ext-/win32/test_dln.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 require 'tmpdir'
 require 'rbconfig'
diff --git a/test/-ext-/win32/test_fd_setsize.rb b/test/-ext-/win32/test_fd_setsize.rb
index 6fe889c941..4c64376f15 100644
--- a/test/-ext-/win32/test_fd_setsize.rb
+++ b/test/-ext-/win32/test_fd_setsize.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit'
 
 module Bug
-- 
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