15 files changed, 15 insertions, 0 deletions
diff --git a/test/webrick/test_cgi.rb b/test/webrick/test_cgi.rb
index b9d066175f..090286840b 100644
--- a/test/webrick/test_cgi.rb
+++ b/test/webrick/test_cgi.rb
@@ -1,4 +1,5 @@
 # coding: US-ASCII
+# frozen_string_literal: false
 require_relative "utils"
 require "webrick"
 require "test/unit"
diff --git a/test/webrick/test_cookie.rb b/test/webrick/test_cookie.rb
index 1652f39ee0..ebbc5939dc 100644
--- a/test/webrick/test_cookie.rb
+++ b/test/webrick/test_cookie.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick/cookie"
 
diff --git a/test/webrick/test_do_not_reverse_lookup.rb b/test/webrick/test_do_not_reverse_lookup.rb
index 57f3b1d3ef..efcb5a9299 100644
--- a/test/webrick/test_do_not_reverse_lookup.rb
+++ b/test/webrick/test_do_not_reverse_lookup.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick"
 require_relative "utils"
diff --git a/test/webrick/test_filehandler.rb b/test/webrick/test_filehandler.rb
index 38b43d75fb..663b237a82 100644
--- a/test/webrick/test_filehandler.rb
+++ b/test/webrick/test_filehandler.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require_relative "utils.rb"
 require "webrick"
diff --git a/test/webrick/test_htmlutils.rb b/test/webrick/test_htmlutils.rb
index 1fe49ee226..ae1b8efa95 100644
--- a/test/webrick/test_htmlutils.rb
+++ b/test/webrick/test_htmlutils.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick/htmlutils"
 
diff --git a/test/webrick/test_httpauth.rb b/test/webrick/test_httpauth.rb
index 27c37f3677..4376b91842 100644
--- a/test/webrick/test_httpauth.rb
+++ b/test/webrick/test_httpauth.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "net/http"
 require "tempfile"
diff --git a/test/webrick/test_httpproxy.rb b/test/webrick/test_httpproxy.rb
index 501bb4cbe5..6837f0c738 100644
--- a/test/webrick/test_httpproxy.rb
+++ b/test/webrick/test_httpproxy.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "net/http"
 require "webrick"
diff --git a/test/webrick/test_httprequest.rb b/test/webrick/test_httprequest.rb
index 3a7e67579f..45d26f8699 100644
--- a/test/webrick/test_httprequest.rb
+++ b/test/webrick/test_httprequest.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "webrick"
 require "stringio"
 require "test/unit"
diff --git a/test/webrick/test_httpresponse.rb b/test/webrick/test_httpresponse.rb
index c916ed57c2..b3f06cd469 100644
--- a/test/webrick/test_httpresponse.rb
+++ b/test/webrick/test_httpresponse.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "webrick"
 require "minitest/autorun"
 require "stringio"
diff --git a/test/webrick/test_httpserver.rb b/test/webrick/test_httpserver.rb
index 933aa0e02e..e718738fc1 100644
--- a/test/webrick/test_httpserver.rb
+++ b/test/webrick/test_httpserver.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "net/http"
 require "webrick"
diff --git a/test/webrick/test_httputils.rb b/test/webrick/test_httputils.rb
index 2753cbe6c9..00f297bd09 100644
--- a/test/webrick/test_httputils.rb
+++ b/test/webrick/test_httputils.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick/httputils"
 
diff --git a/test/webrick/test_httpversion.rb b/test/webrick/test_httpversion.rb
index 81a871a226..e50ee17971 100644
--- a/test/webrick/test_httpversion.rb
+++ b/test/webrick/test_httpversion.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick/httpversion"
 
diff --git a/test/webrick/test_server.rb b/test/webrick/test_server.rb
index 1a720361cc..4d539d0368 100644
--- a/test/webrick/test_server.rb
+++ b/test/webrick/test_server.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "tempfile"
 require "webrick"
diff --git a/test/webrick/test_utils.rb b/test/webrick/test_utils.rb
index fc68124e44..23996de5d2 100644
--- a/test/webrick/test_utils.rb
+++ b/test/webrick/test_utils.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "test/unit"
 require "webrick/utils"
 
diff --git a/test/webrick/utils.rb b/test/webrick/utils.rb
index 71559a5628..ce667df355 100644
--- a/test/webrick/utils.rb
+++ b/test/webrick/utils.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 require "webrick"
 begin
   require "webrick/https"