polish, changes, bump

.travis.yml

@@ -11,4 +11,4 @@ rvm:
   - 2.3.7
   - 2.4.4
   - 2.5.1
-  - jruby-9.1.16.0
+  - jruby-9.1.17.0

Changes.md

@@ -5,6 +5,7 @@
 HEAD
 -----------
 
+- Switch Sidekiq::Testing impl from alias\_method to Module#prepend, for resiliency [#3852]
 - Remove concurrent-ruby gem dependency [#3830]
 
 5.1.3

lib/sidekiq/testing.rb

@@ -72,7 +72,7 @@ module Sidekiq
 
   class EmptyQueueError < RuntimeError; end
 
-  module ClientCoreExt
+  module TestingClient
     def raw_push(payloads)
       if Sidekiq::Testing.fake?
         payloads.each do |job|
@@ -95,7 +95,7 @@ module Sidekiq
     end
   end
 
-  Sidekiq::Client.prepend ClientCoreExt
+  Sidekiq::Client.prepend TestingClient
 
   module Queues
     ##

lib/sidekiq/version.rb

@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module Sidekiq
-  VERSION = "5.1.3"
+  VERSION = "5.1.4"
 end