FEATURE: track request queueing as early as possible

spec/components/middleware/request_tracker_spec.rb

@@ -265,8 +265,15 @@ describe Middleware::RequestTracker do
       # ensure pg is warmed up with the select 1 query
       User.where(id: -100).pluck(:id)
 
+      freeze_time
+      start = Time.now.to_f
+
+      freeze_time 1.minute.from_now
+
       tracker = Middleware::RequestTracker.new(app([200, {}, []], sql_calls: 2, redis_calls: 2))
-      tracker.call(env)
+      tracker.call(env("HTTP_X_REQUEST_START" => "t=#{start}"))
+
+      expect(@data[:queue_seconds]).to eq(60)
 
       timing = @data[:timing]
       expect(timing[:total_duration]).to be > 0