Test against Redis 3.x

.travis.yml

@@ -19,6 +19,7 @@ gemfile:
   - gemfiles/rails_4_2.gemfile
   - gemfiles/dalli2.gemfile
   - gemfiles/redis_4.gemfile
+  - gemfiles/redis_3.gemfile
   - gemfiles/connection_pool_dalli.gemfile
   - gemfiles/active_support_redis_cache_store.gemfile
   - gemfiles/active_support_redis_cache_store_pooled.gemfile

Appraisals

@@ -44,6 +44,10 @@ appraise 'redis_4' do
   gem 'redis', '~> 4.0'
 end
 
+appraise 'redis_3' do
+  gem 'redis', '~> 3.3'
+end
+
 appraise "connection_pool_dalli" do
   gem "connection_pool", "~> 2.2"
   gem "dalli", "~> 2.7"

gemfiles/redis_3.gemfile

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "redis", "~> 3.3"
+
+gemspec path: "../"

spec/acceptance/stores/active_support_redis_cache_store_pooled_spec.rb

@@ -2,7 +2,7 @@
 
 require_relative "../../spec_helper"
 
-if defined?(::ConnectionPool) && defined?(::Redis) && defined?(::ActiveSupport::Cache::RedisCacheStore)
+if defined?(::ConnectionPool) && defined?(::Redis) && Gem::Version.new(::Redis::VERSION) >= Gem::Version.new("4") && defined?(::ActiveSupport::Cache::RedisCacheStore)
   require_relative "../../support/cache_store_helper"
   require "timecop"
 

spec/acceptance/stores/active_support_redis_cache_store_spec.rb

@@ -2,7 +2,7 @@
 
 require_relative "../../spec_helper"
 
-if defined?(::Redis) && defined?(::ActiveSupport::Cache::RedisCacheStore)
+if defined?(::Redis) && Gem::Version.new(::Redis::VERSION) >= Gem::Version.new("4") && defined?(::ActiveSupport::Cache::RedisCacheStore)
   require_relative "../../support/cache_store_helper"
   require "timecop"