WIP add first part of shoryuken tracer spec

spec/ddtrace/contrib/shoryuken/shoryuken_spec_helper.rb

@@ -2,3 +2,34 @@
 require 'shoryuken'
 require 'ddtrace/contrib/shoryuken/tracer'
 require 'ddtrace/contrib/shoryuken/integration'
+
+class TestWorker
+  include Shoryuken::Worker
+
+  shoryuken_options queue: 'default'
+
+  def perform(sqs_msg, body); end
+end
+
+RSpec.configure do |config|
+  config.before do
+    Shoryuken::Client.class_variable_set :@@queues, {}
+    Shoryuken::Client.sqs = nil
+    Shoryuken.groups.clear
+    Shoryuken.options[:concurrency] = 1
+    Shoryuken.options[:delay]       = 1
+    Shoryuken.options[:timeout]     = 1
+    Shoryuken.options[:daemon]      = nil
+    Shoryuken.options[:logfile]     = nil
+    Shoryuken.options[:queues]      = nil
+    TestWorker.get_shoryuken_options.clear
+    TestWorker.get_shoryuken_options['queue'] = 'default'
+    Shoryuken.active_job_queue_name_prefixing = false
+    Shoryuken.worker_registry.clear
+    Shoryuken.register_worker('default', TestWorker)
+    Aws.config[:stub_responses] = true
+    Shoryuken.sqs_client_receive_message_opts.clear
+
+    allow(Shoryuken).to receive(:active_job?).and_return(false)
+  end
+end

spec/ddtrace/contrib/shoryuken/tracer_spec.rb

@@ -0,0 +1,29 @@
+require 'spec_helper'
+require 'spec/ddtrace/contrib/shoryuken/shoryuken_spec_helper'
+
+RSpec.describe Datadog::Contrib::Shoryuken::Tracer do
+  let(:worker) { TestWorker.perform_async(body) }
+  let(:tracer) { ::Datadog::Tracer.new(writer: writer) }
+  let(:writer) { FauxWriter.new }
+  let(:sqs_queue) { double Shoryuken::Queue, visibility_timeout: 60 }
+  let(:queue) { 'default' }
+  let(:body) { 'test' }
+  let :sqs_msg do
+    double \
+      Shoryuken::Message,
+      queue_url: queue,
+      body: 'test',
+      attributes: {
+        id: 1,
+        test_attribute: 'test'
+      }
+  end
+
+  before do
+    allow(Shoryuken::Client).to receive(:queues).with(queue).and_return sqs_queue
+
+    Shoryuken.server_middleware do |chain|
+      chain.add Datadog::Contrib::Shoryuken::Tracer, tracer: tracer
+    end
+  end
+end