17 files changed, 17 insertions, 0 deletions
diff --git a/test/lib/envutil.rb b/test/lib/envutil.rb
index 2f2ec6d..a0b907c 100644
--- a/test/lib/envutil.rb
+++ b/test/lib/envutil.rb
@@ -1,4 +1,5 @@
 # -*- coding: us-ascii -*-
+# frozen_string_literal: false
 require "open3"
 require "timeout"
 require_relative "find_executable"
diff --git a/test/lib/find_executable.rb b/test/lib/find_executable.rb
index 4ba9a05..0ddd307 100644
--- a/test/lib/find_executable.rb
+++ b/test/lib/find_executable.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "rbconfig"
 
 module EnvUtil
diff --git a/test/lib/iseq_loader_checker.rb b/test/lib/iseq_loader_checker.rb
index db9b767..675b658 100644
--- a/test/lib/iseq_loader_checker.rb
+++ b/test/lib/iseq_loader_checker.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 
 begin
   require '-test-/iseq_load/iseq_load'
diff --git a/test/lib/leakchecker.rb b/test/lib/leakchecker.rb
index 98a598f..a9bc581 100644
--- a/test/lib/leakchecker.rb
+++ b/test/lib/leakchecker.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 class LeakChecker
   def initialize
     @fd_info = find_fds
diff --git a/test/lib/memory_status.rb b/test/lib/memory_status.rb
index b275db0..deaaeb2 100644
--- a/test/lib/memory_status.rb
+++ b/test/lib/memory_status.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module Memory
   keys = []
   vals = []
diff --git a/test/lib/minitest/autorun.rb b/test/lib/minitest/autorun.rb
index 88b1e05..40640b2 100644
--- a/test/lib/minitest/autorun.rb
+++ b/test/lib/minitest/autorun.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: false
 
 begin
   require 'rubygems'
diff --git a/test/lib/minitest/benchmark.rb b/test/lib/minitest/benchmark.rb
index 5195fc0..21f0b29 100644
--- a/test/lib/minitest/benchmark.rb
+++ b/test/lib/minitest/benchmark.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: false
 
 require 'minitest/unit'
 
diff --git a/test/lib/minitest/mock.rb b/test/lib/minitest/mock.rb
index 19acaff..07e8811 100644
--- a/test/lib/minitest/mock.rb
+++ b/test/lib/minitest/mock.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: false
 
 class MockExpectationError < StandardError; end # :nodoc:
 
diff --git a/test/lib/minitest/unit.rb b/test/lib/minitest/unit.rb
index e67ca02..62f89e9 100644
--- a/test/lib/minitest/unit.rb
+++ b/test/lib/minitest/unit.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: false
 
 require "optparse"
 require "rbconfig"
diff --git a/test/lib/profile_test_all.rb b/test/lib/profile_test_all.rb
index 08de7bb..4496d3f 100644
--- a/test/lib/profile_test_all.rb
+++ b/test/lib/profile_test_all.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 #
 # purpose:
 #  Profile memory usage of each tests.
diff --git a/test/lib/test/unit.rb b/test/lib/test/unit.rb
index d886f29..85e6d76 100644
--- a/test/lib/test/unit.rb
+++ b/test/lib/test/unit.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 begin
   gem 'minitest', '< 5.0.0' if defined? Gem
 rescue Gem::LoadError
diff --git a/test/lib/test/unit/assertions.rb b/test/lib/test/unit/assertions.rb
index 201e245..c749384 100644
--- a/test/lib/test/unit/assertions.rb
+++ b/test/lib/test/unit/assertions.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'minitest/unit'
 require 'pp'
 
diff --git a/test/lib/test/unit/parallel.rb b/test/lib/test/unit/parallel.rb
index 780deda..6a319c3 100644
--- a/test/lib/test/unit/parallel.rb
+++ b/test/lib/test/unit/parallel.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 $LOAD_PATH.unshift "#{File.dirname(__FILE__)}/../.."
 require 'test/unit'
 
diff --git a/test/lib/test/unit/testcase.rb b/test/lib/test/unit/testcase.rb
index d6ea4fd..10348b5 100644
--- a/test/lib/test/unit/testcase.rb
+++ b/test/lib/test/unit/testcase.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require 'test/unit/assertions'
 
 module Test
diff --git a/test/lib/tracepointchecker.rb b/test/lib/tracepointchecker.rb
index 2d56e65..73631d4 100644
--- a/test/lib/tracepointchecker.rb
+++ b/test/lib/tracepointchecker.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module TracePointChecker
   STATE = {
     count: 0,
diff --git a/test/lib/with_different_ofs.rb b/test/lib/with_different_ofs.rb
index 76dfa68..164914f 100644
--- a/test/lib/with_different_ofs.rb
+++ b/test/lib/with_different_ofs.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module DifferentOFS
   module WithDifferentOFS
     def setup
diff --git a/test/lib/zombie_hunter.rb b/test/lib/zombie_hunter.rb
index 77be4df..8a8fba6 100644
--- a/test/lib/zombie_hunter.rb
+++ b/test/lib/zombie_hunter.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 module ZombieHunter
   def after_teardown
     super