Only require connection_pool running connection_pool appraisal

Appraisals

@@ -32,3 +32,8 @@ end
 appraise 'dalli2' do
   gem 'dalli', '~> 2.0'
 end
+
+appraise "connection_pool_dalli" do
+  gem "connection_pool", "~> 2.2"
+  gem "dalli", "~> 2.7"
+end

gemfiles/connection_pool_dalli.gemfile

@@ -0,0 +1,8 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "connection_pool", "~> 2.2"
+gem "dalli", "~> 2.7"
+
+gemspec path: "../"

rack-attack.gemspec

@@ -48,6 +48,5 @@ Gem::Specification.new do |s|
   # which rack-attack uses only for testing compatibility in test suite.
   s.add_development_dependency 'actionpack', '>= 3.0.0'
   s.add_development_dependency 'activesupport', '>= 3.0.0'
-  s.add_development_dependency 'connection_pool'
   s.add_development_dependency 'redis-activesupport'
 end

spec/acceptance/stores/active_support_redis_cache_store_pooled_spec.rb

@@ -1,40 +1,42 @@
 require_relative "../../spec_helper"
-require_relative "../../support/cache_store_helper"
 
-require "timecop"
+if defined?(::ConnectionPool)
+  require_relative "../../support/cache_store_helper"
+  require "timecop"
 
-if ActiveSupport.version >= Gem::Version.new("5.2.0")
-  describe "ActiveSupport::Cache::RedisCacheStore (pooled) as a cache backend" do
-    before do
-      Rack::Attack.cache.store = ActiveSupport::Cache::RedisCacheStore.new(pool_size: 2)
-    end
-
-    after do
-      Rack::Attack.cache.store.clear
-    end
-
-    it_works_for_cache_backed_features
-
-    it "doesn't leak keys" do
-      Rack::Attack.throttle("by ip", limit: 1, period: 1) do |request|
-        request.ip
+  if ActiveSupport.version >= Gem::Version.new("5.2.0")
+    describe "ActiveSupport::Cache::RedisCacheStore (pooled) as a cache backend" do
+      before do
+        Rack::Attack.cache.store = ActiveSupport::Cache::RedisCacheStore.new(pool_size: 2)
       end
 
-      key = nil
-
-      # Freeze time during these statement to be sure that the key used by rack attack is the same
-      # we pre-calculate in local variable `key`
-      Timecop.freeze do
-        key = "rack::attack:#{Time.now.to_i}:by ip:1.2.3.4"
-
-        get "/", {}, "REMOTE_ADDR" => "1.2.3.4"
+      after do
+        Rack::Attack.cache.store.clear
       end
 
-      assert Rack::Attack.cache.store.fetch(key)
+      it_works_for_cache_backed_features
 
-      sleep 2.1
+      it "doesn't leak keys" do
+        Rack::Attack.throttle("by ip", limit: 1, period: 1) do |request|
+          request.ip
+        end
 
-      assert_nil Rack::Attack.cache.store.fetch(key)
+        key = nil
+
+        # Freeze time during these statement to be sure that the key used by rack attack is the same
+        # we pre-calculate in local variable `key`
+        Timecop.freeze do
+          key = "rack::attack:#{Time.now.to_i}:by ip:1.2.3.4"
+
+          get "/", {}, "REMOTE_ADDR" => "1.2.3.4"
+        end
+
+        assert Rack::Attack.cache.store.fetch(key)
+
+        sleep 2.1
+
+        assert_nil Rack::Attack.cache.store.fetch(key)
+      end
     end
   end
 end

spec/acceptance/stores/connection_pool_dalli_client_spec.rb

@@ -1,6 +1,6 @@
 require_relative "../../spec_helper"
 
-if defined?(::Dalli)
+if defined?(::Dalli) && defined?(::ConnectionPool)
   require_relative "../../support/cache_store_helper"
   require "connection_pool"
   require "dalli"

spec/spec_helper.rb

@@ -18,6 +18,11 @@ begin
 rescue LoadError
 end
 
+begin
+  require "connection_pool"
+rescue LoadError
+end
+
 class MiniTest::Spec
   include Rack::Test::Methods