From 0b9fbf9340ae87b0a561d2bdb1b9b3a441351127 Mon Sep 17 00:00:00 2001
From: Pat Allan <pat@freelancing-gods.com>
Date: Thu, 22 Jun 2017 01:29:31 +1000
Subject: [PATCH 1/4] Get tests passing with frozen-string-literals enabled.

Though this does require patches for test-unit, as covered in https://github.com/test-unit/test-unit/pull/149.
---
 lib/redis/connection/ruby.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/redis/connection/ruby.rb b/lib/redis/connection/ruby.rb
index 96f1d6a59..c01edd913 100644
--- a/lib/redis/connection/ruby.rb
+++ b/lib/redis/connection/ruby.rb
@@ -39,7 +39,7 @@ def initialize(*args)
         super(*args)
 
         @timeout = @write_timeout = nil
-        @buffer = ""
+        @buffer = "".dup
       end
 
       def timeout=(timeout)

From 5922e0acf6fe6d728005773e9623ee4845fc3907 Mon Sep 17 00:00:00 2001
From: Pat Allan <pat@freelancing-gods.com>
Date: Sun, 25 Jun 2017 00:01:01 +1000
Subject: [PATCH 2/4] Upgrade to latest test-unit for 1.9+.

---
 Gemfile       | 6 ++++++
 redis.gemspec | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Gemfile b/Gemfile
index 73d38bc2e..b14f14cdd 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,3 +2,9 @@
 source 'https://rubygems.org'
 
 gemspec
+
+if RUBY_VERSION.to_f < 1.9
+  gem 'test-unit', '3.1.5'
+else
+  gem 'test-unit', '>= 3.2.5'
+end
diff --git a/redis.gemspec b/redis.gemspec
index 3099b6d9b..a661410dd 100644
--- a/redis.gemspec
+++ b/redis.gemspec
@@ -40,5 +40,5 @@ Gem::Specification.new do |s|
   s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
 
   s.add_development_dependency("rake", "<11.0.0")
-  s.add_development_dependency("test-unit", "3.1.5")
+  s.add_development_dependency("test-unit", ">= 3.1.5")
 end

From 8ff919bbc7e8b10e8c3255ab036b387730f63db6 Mon Sep 17 00:00:00 2001
From: Pat Allan <pat@freelancing-gods.com>
Date: Sun, 25 Jun 2017 00:35:33 +1000
Subject: [PATCH 3/4] Add MRI 2.4 plus frozen string literal check to
 .travis.yml

---
 .travis.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.travis.yml b/.travis.yml
index 438d89596..dcfd6e5c9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,6 +7,7 @@ rvm:
   - 2.1
   - 2.2
   - 2.3.0
+  - 2.4.1
   - jruby-18mode
   - jruby-19mode
   - jruby-9.0.5.0
@@ -16,6 +17,9 @@ gemfile: ".travis/Gemfile"
 
 sudo: false
 
+before_script:
+- if (ruby -e "exit RUBY_VERSION.to_f >= 2.4"); then export RUBYOPT="--enable-frozen-string-literal"; fi; echo $RUBYOPT
+
 env:
   global:
     - VERBOSE=true

From 8033911a500a2d33e472e3b8da86b73979ed4111 Mon Sep 17 00:00:00 2001
From: Pat Allan <pat@freelancing-gods.com>
Date: Sun, 25 Jun 2017 12:06:53 +1000
Subject: [PATCH 4/4] Add test-unit constraints to the Travis Gemfile.

---
 .travis/Gemfile | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.travis/Gemfile b/.travis/Gemfile
index 3fd116321..9e4a237cf 100644
--- a/.travis/Gemfile
+++ b/.travis/Gemfile
@@ -9,3 +9,9 @@ when "synchrony"
   gem "hiredis"
   gem "em-synchrony"
 end
+
+if RUBY_VERSION.to_f < 1.9
+  gem 'test-unit', '3.1.5'
+else
+  gem 'test-unit', '>= 3.2.5'
+end