Update dependency on async-dns and use async-rspec for testing.

rubydns.gemspec

@@ -30,7 +30,8 @@ Gem::Specification.new do |spec|
 
 	spec.required_ruby_version = '>= 2.2.6'
 
-	spec.add_dependency("async-dns", "~> 0.10")
+	spec.add_dependency("async-dns", "~> 0.12")
+	spec.add_development_dependency("async-rspec", "~> 1.0")
 
 	spec.add_development_dependency "bundler", "~> 1.3"
 	spec.add_development_dependency "rspec", "~> 3.4"

spec/rubydns/daemon_spec.rb

@@ -48,7 +48,7 @@ def startup
 				end
 
 				match(/peername/, IN::A) do |transaction|
-					transaction.respond!(transaction[:peer])
+					transaction.respond!(transaction[:remote_address].ip_address)
 				end
 
 				# Default DNS handler
@@ -65,7 +65,7 @@ def shutdown
 end
 
 describe "RubyDNS Daemonized Server" do
-	include_context "reactor"
+	include_context Async::RSpec::Reactor
 
 	before(:all) do
 		# BasicTestServer.controller output: $stderr

spec/rubydns/injected_supervisor_spec.rb

@@ -34,7 +34,7 @@ def test_message
 	IN = Resolv::DNS::Resource::IN
 
 	describe "RubyDNS::run_server(server_class: ...)" do
-		include_context "reactor"
+		include_context Async::RSpec::Reactor
 
 		let(:server) do
 			# Start the RubyDNS server

spec/rubydns/passthrough_spec.rb

@@ -28,7 +28,7 @@ module RubyDNS::PassthroughSpec
 	IN = Resolv::DNS::Resource::IN
 
 	describe "RubyDNS Passthrough Server" do
-		include_context "reactor"
+		include_context Async::RSpec::Reactor
 
 		def run_server
 			task = RubyDNS::run_server(:listen => SERVER_PORTS) do

spec/spec_helper.rb

@@ -18,20 +18,7 @@
 
 require "bundler/setup"
 require "async"
-require "async/tcp_socket"
-require "async/udp_socket"
-
-RSpec.shared_context "reactor" do
-	let(:reactor) {Async::Reactor.new}
-
-	around(:each) do |example|
-		reactor.run do
-			example.run
-		end
-
-		reactor.close
-	end
-end
+require "async/rspec"
 
 RSpec.configure do |config|
 	# Enable flags like --only-failures and --next-failure