From 879d408b6f0205717f44c477a8a42dd4b488f352 Mon Sep 17 00:00:00 2001
From: Thomas Walpole <twalpole@gmail.com>
Date: Sat, 5 Mar 2016 20:45:07 -0800
Subject: [PATCH] update for frozen string literals

---
 examples/chat.rb              |  1 +
 examples/simple.rb            |  1 +
 lib/sinatra.rb                |  1 +
 lib/sinatra/base.rb           | 10 ++++++++--
 lib/sinatra/main.rb           |  1 +
 lib/sinatra/version.rb        |  1 +
 test/asciidoctor_test.rb      |  1 +
 test/base_test.rb             |  1 +
 test/builder_test.rb          |  1 +
 test/coffee_test.rb           |  1 +
 test/compile_test.rb          |  1 +
 test/contest.rb               |  1 +
 test/creole_test.rb           |  1 +
 test/delegator_test.rb        |  1 +
 test/encoding_test.rb         |  1 +
 test/erb_test.rb              |  1 +
 test/extensions_test.rb       |  1 +
 test/filter_test.rb           |  1 +
 test/haml_test.rb             |  1 +
 test/helper.rb                |  1 +
 test/helpers_test.rb          |  1 +
 test/integration/app.rb       |  1 +
 test/integration_helper.rb    |  1 +
 test/integration_test.rb      |  1 +
 test/less_test.rb             |  1 +
 test/liquid_test.rb           |  1 +
 test/mapped_error_test.rb     |  1 +
 test/markaby_test.rb          |  1 +
 test/markdown_test.rb         |  1 +
 test/mediawiki_test.rb        |  1 +
 test/middleware_test.rb       |  1 +
 test/nokogiri_test.rb         |  1 +
 test/rabl_test.rb             |  1 +
 test/rack_test.rb             |  1 +
 test/radius_test.rb           |  1 +
 test/rdoc_test.rb             |  1 +
 test/readme_test.rb           |  1 +
 test/request_test.rb          |  1 +
 test/response_test.rb         |  1 +
 test/result_test.rb           |  1 +
 test/route_added_hook_test.rb |  1 +
 test/routing_test.rb          |  1 +
 test/sass_test.rb             |  1 +
 test/scss_test.rb             |  1 +
 test/server_test.rb           |  1 +
 test/settings_test.rb         |  1 +
 test/sinatra_test.rb          |  1 +
 test/slim_test.rb             |  1 +
 test/static_test.rb           |  1 +
 test/streaming_test.rb        |  1 +
 test/stylus_test.rb           |  1 +
 test/templates_test.rb        |  1 +
 test/textile_test.rb          |  1 +
 test/views/ascii.erb          |  1 +
 test/views/calc.html.erb      |  3 ++-
 test/views/error.erb          |  1 +
 test/views/error.haml         |  1 +
 test/views/hello.erb          |  1 +
 test/views/hello.haml         |  1 +
 test/views/layout2.erb        |  1 +
 test/views/layout2.haml       |  1 +
 test/views/utf8.erb           |  1 +
 test/wlang_test.rb            |  1 +
 test/yajl_test.rb             |  1 +
 64 files changed, 72 insertions(+), 3 deletions(-)

diff --git a/examples/chat.rb b/examples/chat.rb
index 8e47b7d1b3..d1639503fc 100755
--- a/examples/chat.rb
+++ b/examples/chat.rb
@@ -1,5 +1,6 @@
 #!/usr/bin/env ruby -I ../lib -I lib
 # coding: utf-8
+# frozen_string_literal: true
 require 'sinatra'
 set :server, 'thin'
 connections = []
diff --git a/examples/simple.rb b/examples/simple.rb
index 2697f94bf2..d1cce864f7 100755
--- a/examples/simple.rb
+++ b/examples/simple.rb
@@ -1,3 +1,4 @@
 #!/usr/bin/env ruby -I ../lib -I lib
+# frozen_string_literal: true
 require 'sinatra'
 get('/') { 'this is a simple app' }
diff --git a/lib/sinatra.rb b/lib/sinatra.rb
index 68261380cb..504dd8c7c2 100644
--- a/lib/sinatra.rb
+++ b/lib/sinatra.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'sinatra/main'
 
 enable :inline_templates
diff --git a/lib/sinatra/base.rb b/lib/sinatra/base.rb
index a08d2db75f..1411be50a9 100644
--- a/lib/sinatra/base.rb
+++ b/lib/sinatra/base.rb
@@ -348,7 +348,7 @@ def attachment(filename = nil, disposition = :attachment)
       response['Content-Disposition'] = disposition.to_s
       if filename
         params = '; filename="%s"' % File.basename(filename)
-        response['Content-Disposition'] << params
+        response['Content-Disposition'] += params
         ext = File.extname(filename)
         content_type(ext) unless response['Content-Type'] or ext.empty?
       end
@@ -842,6 +842,7 @@ def compile_template(engine, data, options, views)
           body, path, line = settings.templates[data]
           if body
             body = body.call if body.respond_to?(:call)
+            body = body.dup if body.frozen?
             template.new(path, line.to_i, options) { body }
           else
             found = false
@@ -857,7 +858,12 @@ def compile_template(engine, data, options, views)
             template.new(path, 1, options)
           end
         when Proc, String
-          body = data.is_a?(String) ? Proc.new { data } : data
+          body = if data.is_a?(String)
+            data = data.dup if data.frozen?
+            Proc.new { data }
+          else
+            data
+          end
           path, line = settings.caller_locations.first
           template.new(path, line.to_i, options, &body)
         else
diff --git a/lib/sinatra/main.rb b/lib/sinatra/main.rb
index 76a55261af..c734759c7d 100644
--- a/lib/sinatra/main.rb
+++ b/lib/sinatra/main.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'sinatra/base'
 
 module Sinatra
diff --git a/lib/sinatra/version.rb b/lib/sinatra/version.rb
index 0e48ab1194..bef9101d88 100644
--- a/lib/sinatra/version.rb
+++ b/lib/sinatra/version.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Sinatra
   VERSION = '2.0.0-alpha'
 end
diff --git a/test/asciidoctor_test.rb b/test/asciidoctor_test.rb
index 6d64b047dc..6dbdc2c135 100644
--- a/test/asciidoctor_test.rb
+++ b/test/asciidoctor_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/base_test.rb b/test/base_test.rb
index a6730373ec..f8ec6a1617 100644
--- a/test/base_test.rb
+++ b/test/base_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class BaseTest < Minitest::Test
diff --git a/test/builder_test.rb b/test/builder_test.rb
index 29c6d29c08..ee1d4e25ba 100644
--- a/test/builder_test.rb
+++ b/test/builder_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/coffee_test.rb b/test/coffee_test.rb
index 8a5bee1d52..3a4a0fd2f9 100644
--- a/test/coffee_test.rb
+++ b/test/coffee_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/compile_test.rb b/test/compile_test.rb
index baa3a4c3df..104aded7b9 100644
--- a/test/compile_test.rb
+++ b/test/compile_test.rb
@@ -1,4 +1,5 @@
 # I like coding: UTF-8
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class CompileTest < Minitest::Test
diff --git a/test/contest.rb b/test/contest.rb
index 2b68c4148b..f116f77305 100644
--- a/test/contest.rb
+++ b/test/contest.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # Copyright (c) 2009 Damian Janowski and Michel Martens for Citrusbyte
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/test/creole_test.rb b/test/creole_test.rb
index 76b305f89c..432ca887e7 100644
--- a/test/creole_test.rb
+++ b/test/creole_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/delegator_test.rb b/test/delegator_test.rb
index bd4425eb63..e940a5e72d 100644
--- a/test/delegator_test.rb
+++ b/test/delegator_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class DelegatorTest < Minitest::Test
diff --git a/test/encoding_test.rb b/test/encoding_test.rb
index 61a9f9338e..ab92f26406 100644
--- a/test/encoding_test.rb
+++ b/test/encoding_test.rb
@@ -1,4 +1,5 @@
 # encoding: UTF-8
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require 'erb'
 
diff --git a/test/erb_test.rb b/test/erb_test.rb
index 325da9c4ab..6bd1739d99 100644
--- a/test/erb_test.rb
+++ b/test/erb_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class ERBTest < Minitest::Test
diff --git a/test/extensions_test.rb b/test/extensions_test.rb
index b0d7e84574..d011cd7cd0 100644
--- a/test/extensions_test.rb
+++ b/test/extensions_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class ExtensionsTest < Minitest::Test
diff --git a/test/filter_test.rb b/test/filter_test.rb
index f708015bd6..613a3dfa28 100644
--- a/test/filter_test.rb
+++ b/test/filter_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class BeforeFilterTest < Minitest::Test
diff --git a/test/haml_test.rb b/test/haml_test.rb
index c3a32cc19b..cb04392acf 100644
--- a/test/haml_test.rb
+++ b/test/haml_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/helper.rb b/test/helper.rb
index 49ce119aea..e45255208a 100644
--- a/test/helper.rb
+++ b/test/helper.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 ENV['RACK_ENV'] = 'test'
 Encoding.default_external = "UTF-8" if defined? Encoding
 
diff --git a/test/helpers_test.rb b/test/helpers_test.rb
index f56fe24ce3..4ba9c86055 100644
--- a/test/helpers_test.rb
+++ b/test/helpers_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require 'date'
 require 'json'
diff --git a/test/integration/app.rb b/test/integration/app.rb
index 3e87a00aaf..e1f2e0d306 100644
--- a/test/integration/app.rb
+++ b/test/integration/app.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 $stderr.puts "loading"
 require 'sinatra'
 
diff --git a/test/integration_helper.rb b/test/integration_helper.rb
index 5e6c55a10a..0eaa63b1f9 100644
--- a/test/integration_helper.rb
+++ b/test/integration_helper.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'sinatra/base'
 require 'rbconfig'
 require 'open-uri'
diff --git a/test/integration_test.rb b/test/integration_test.rb
index feda6e02aa..2d5c0e4e2d 100644
--- a/test/integration_test.rb
+++ b/test/integration_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require File.expand_path('../integration_helper', __FILE__)
 
diff --git a/test/less_test.rb b/test/less_test.rb
index 10276fd158..76fdd0ac98 100644
--- a/test/less_test.rb
+++ b/test/less_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/liquid_test.rb b/test/liquid_test.rb
index 57fcb6c948..9d202fcec6 100644
--- a/test/liquid_test.rb
+++ b/test/liquid_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/mapped_error_test.rb b/test/mapped_error_test.rb
index cb158a2683..47ffedd653 100644
--- a/test/mapped_error_test.rb
+++ b/test/mapped_error_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class FooError < RuntimeError
diff --git a/test/markaby_test.rb b/test/markaby_test.rb
index fcc7d3330c..7706ebf503 100644
--- a/test/markaby_test.rb
+++ b/test/markaby_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/markdown_test.rb b/test/markdown_test.rb
index 7c7deecf37..5ca39518df 100644
--- a/test/markdown_test.rb
+++ b/test/markdown_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 MarkdownTest = proc do
diff --git a/test/mediawiki_test.rb b/test/mediawiki_test.rb
index 759aa23551..3bba20a89c 100644
--- a/test/mediawiki_test.rb
+++ b/test/mediawiki_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/middleware_test.rb b/test/middleware_test.rb
index 8a6e836c4e..4cd1939c5c 100644
--- a/test/middleware_test.rb
+++ b/test/middleware_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class MiddlewareTest < Minitest::Test
diff --git a/test/nokogiri_test.rb b/test/nokogiri_test.rb
index e2a1c135c8..587df196f3 100644
--- a/test/nokogiri_test.rb
+++ b/test/nokogiri_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/rabl_test.rb b/test/rabl_test.rb
index c9303a12c3..d6c9859eaf 100644
--- a/test/rabl_test.rb
+++ b/test/rabl_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/rack_test.rb b/test/rack_test.rb
index 8ac81d420b..127057b60a 100644
--- a/test/rack_test.rb
+++ b/test/rack_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require 'rack'
 
diff --git a/test/radius_test.rb b/test/radius_test.rb
index 214cd4ebd5..29b355ba20 100644
--- a/test/radius_test.rb
+++ b/test/radius_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/rdoc_test.rb b/test/rdoc_test.rb
index cb928dd0cc..a519fb2567 100644
--- a/test/rdoc_test.rb
+++ b/test/rdoc_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/readme_test.rb b/test/readme_test.rb
index 4da41038be..44e3d36b50 100644
--- a/test/readme_test.rb
+++ b/test/readme_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # Tests to check if all the README examples work.
 require File.expand_path('../helper', __FILE__)
 
diff --git a/test/request_test.rb b/test/request_test.rb
index 4434589c32..97e7833d60 100644
--- a/test/request_test.rb
+++ b/test/request_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require 'stringio'
 
diff --git a/test/response_test.rb b/test/response_test.rb
index ae4608d798..5d3aae0e69 100644
--- a/test/response_test.rb
+++ b/test/response_test.rb
@@ -1,4 +1,5 @@
 # encoding: utf-8
+# frozen_string_literal: true
 
 require File.expand_path('../helper', __FILE__)
 
diff --git a/test/result_test.rb b/test/result_test.rb
index dd1eb818f9..b079024bf6 100644
--- a/test/result_test.rb
+++ b/test/result_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class ResultTest < Minitest::Test
diff --git a/test/route_added_hook_test.rb b/test/route_added_hook_test.rb
index 2356166f3b..9979c7740f 100644
--- a/test/route_added_hook_test.rb
+++ b/test/route_added_hook_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 module RouteAddedTest
diff --git a/test/routing_test.rb b/test/routing_test.rb
index 5756731268..924ef9f5dc 100644
--- a/test/routing_test.rb
+++ b/test/routing_test.rb
@@ -1,4 +1,5 @@
 # I like coding: UTF-8
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 # Helper method for easy route pattern matching testing
diff --git a/test/sass_test.rb b/test/sass_test.rb
index a8cbf6fe1e..ffc5bf6501 100644
--- a/test/sass_test.rb
+++ b/test/sass_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/scss_test.rb b/test/scss_test.rb
index 1db2effd76..6dcaa080ab 100644
--- a/test/scss_test.rb
+++ b/test/scss_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/server_test.rb b/test/server_test.rb
index cdd243baea..57c0f9296e 100644
--- a/test/server_test.rb
+++ b/test/server_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 require 'stringio'
 
diff --git a/test/settings_test.rb b/test/settings_test.rb
index 1b135f56d3..2268a142c8 100644
--- a/test/settings_test.rb
+++ b/test/settings_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class SettingsTest < Minitest::Test
diff --git a/test/sinatra_test.rb b/test/sinatra_test.rb
index b27120a06c..53090eb086 100644
--- a/test/sinatra_test.rb
+++ b/test/sinatra_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class SinatraTest < Minitest::Test
diff --git a/test/slim_test.rb b/test/slim_test.rb
index a3ad739751..6d09e3427d 100644
--- a/test/slim_test.rb
+++ b/test/slim_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/static_test.rb b/test/static_test.rb
index a00c5cf250..04772ddb21 100644
--- a/test/static_test.rb
+++ b/test/static_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class StaticTest < Minitest::Test
diff --git a/test/streaming_test.rb b/test/streaming_test.rb
index cc1abe7032..f4a4052cab 100644
--- a/test/streaming_test.rb
+++ b/test/streaming_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 class StreamingTest < Minitest::Test
diff --git a/test/stylus_test.rb b/test/stylus_test.rb
index 9c7e7fd0c3..14e7536ae5 100644
--- a/test/stylus_test.rb
+++ b/test/stylus_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/templates_test.rb b/test/templates_test.rb
index 3548f8f5b0..1d7aafbc40 100644
--- a/test/templates_test.rb
+++ b/test/templates_test.rb
@@ -1,4 +1,5 @@
 # encoding: UTF-8
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 File.delete(File.dirname(__FILE__) + '/views/layout.test') rescue nil
 
diff --git a/test/textile_test.rb b/test/textile_test.rb
index 33e01e0009..8a1078b864 100644
--- a/test/textile_test.rb
+++ b/test/textile_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/views/ascii.erb b/test/views/ascii.erb
index 094e6a8e21..840d92bc05 100644
--- a/test/views/ascii.erb
+++ b/test/views/ascii.erb
@@ -1,2 +1,3 @@
+<%# frozen_string_literal: true %>
 This file has no unicode in it!
 <%= value %>
diff --git a/test/views/calc.html.erb b/test/views/calc.html.erb
index ff47b84757..41bb7287fc 100644
--- a/test/views/calc.html.erb
+++ b/test/views/calc.html.erb
@@ -1 +1,2 @@
-<%= 1 + 1 %>
\ No newline at end of file
+<%# frozen_string_literal: true %>
+<%= 1 + 1 %>
diff --git a/test/views/error.erb b/test/views/error.erb
index b48d1f060e..34dc781609 100644
--- a/test/views/error.erb
+++ b/test/views/error.erb
@@ -1,3 +1,4 @@
+<%# frozen_string_literal: true %>
 Hello <%= 'World' %>
 <% raise 'Goodbye' unless defined?(french) && french %>
 <% raise 'Au revoir' if defined?(french) && french %>
diff --git a/test/views/error.haml b/test/views/error.haml
index 6019007b26..a2df53afa7 100644
--- a/test/views/error.haml
+++ b/test/views/error.haml
@@ -1,3 +1,4 @@
+-# frozen_string_literal: true
 %h1 Hello From Haml
 = raise 'goodbye' unless defined?(french) && french
 = raise 'au revoir' if defined?(french) && french
diff --git a/test/views/hello.erb b/test/views/hello.erb
index bcbbc926f4..8c47cd271e 100644
--- a/test/views/hello.erb
+++ b/test/views/hello.erb
@@ -1 +1,2 @@
+<%# frozen_string_literal: true %>
 Hello <%= 'World' %>
diff --git a/test/views/hello.haml b/test/views/hello.haml
index d6852a6098..a56c94c77d 100644
--- a/test/views/hello.haml
+++ b/test/views/hello.haml
@@ -1 +1,2 @@
+-# frozen_string_literal: true
 %h1 Hello From Haml
diff --git a/test/views/layout2.erb b/test/views/layout2.erb
index e097f3b6e0..2eb784b5fc 100644
--- a/test/views/layout2.erb
+++ b/test/views/layout2.erb
@@ -1,2 +1,3 @@
+<%# frozen_string_literal: true %>
 ERB Layout!
 <%= yield %>
diff --git a/test/views/layout2.haml b/test/views/layout2.haml
index 58bfc04de4..175c63deb8 100644
--- a/test/views/layout2.haml
+++ b/test/views/layout2.haml
@@ -1,2 +1,3 @@
+-# frozen_string_literal: true
 %h1 HAML Layout!
 %p= yield
diff --git a/test/views/utf8.erb b/test/views/utf8.erb
index de743c5bee..50bceea830 100644
--- a/test/views/utf8.erb
+++ b/test/views/utf8.erb
@@ -1,2 +1,3 @@
+<%# frozen_string_literal: true %>
 <h1><%= value %></h1>
 Ingen vill veta var du köpt din tröja.
diff --git a/test/wlang_test.rb b/test/wlang_test.rb
index 142ca571a7..be4a5239bd 100644
--- a/test/wlang_test.rb
+++ b/test/wlang_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin
diff --git a/test/yajl_test.rb b/test/yajl_test.rb
index 2f00f069df..6e40020ec5 100644
--- a/test/yajl_test.rb
+++ b/test/yajl_test.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require File.expand_path('../helper', __FILE__)
 
 begin