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-rw-r--r--test/benchmark/dd.ru1
-rw-r--r--test/benchmark/ddstream.ru1
-rw-r--r--test/benchmark/readinput.ru1
-rw-r--r--test/benchmark/stack.ru1
4 files changed, 4 insertions, 0 deletions
diff --git a/test/benchmark/dd.ru b/test/benchmark/dd.ru
index 111fa2e..5bd2739 100644
--- a/test/benchmark/dd.ru
+++ b/test/benchmark/dd.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # This benchmark is the simplest test of the I/O facilities in
 # unicorn.  It is meant to return a fixed-sized blob to test
 # the performance of things in Unicorn, _NOT_ the app.
diff --git a/test/benchmark/ddstream.ru b/test/benchmark/ddstream.ru
index b14c973..fd40ced 100644
--- a/test/benchmark/ddstream.ru
+++ b/test/benchmark/ddstream.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # This app is intended to test large HTTP responses with or without
 # a fully-buffering reverse proxy such as nginx. Without a fully-buffering
 # reverse proxy, unicorn will be unresponsive when client count exceeds
diff --git a/test/benchmark/readinput.ru b/test/benchmark/readinput.ru
index c91bec3..95c0226 100644
--- a/test/benchmark/readinput.ru
+++ b/test/benchmark/readinput.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 # This app is intended to test large HTTP requests with or without
 # a fully-buffering reverse proxy such as nginx. Without a fully-buffering
 # reverse proxy, unicorn will be unresponsive when client count exceeds
diff --git a/test/benchmark/stack.ru b/test/benchmark/stack.ru
index fc9193f..17a565b 100644
--- a/test/benchmark/stack.ru
+++ b/test/benchmark/stack.ru
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
 run(lambda { |env|
   body = "#{caller.size}\n"
   h = {