Async task is appears to be blocking #363

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1. ioquatix commented on Nov 29, 2024

   

   ioquatix

   on Nov 29, 2024

   Last edited by ioquatix

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   A top level async task is blocking as there is no way the sleep can execute while continuing to execute the code outside the event loop.

   You should run your entire test inside an event, e.g.

   require "async"
   describe "async" do
     it "tests async" do
       Async do
         task = Async do
           sleep(100)
         end
         task.stop
         puts "done"
       end
     end
   end

   If you are using Sus you can use sus-fixtures-async and write it like this:

   require "async"
   require "sus/fixtures/async"
   
   describe "async" do
     include Sus::Fixtures::Async::ReactorContext
     it "tests async" do
       task = Async do
         sleep(100)
       end
       task.stop
       puts "done"
     end
   end

   The reactor context also adds a 60s timeout to the code to ensure your tests aren't hanging.
2. socketry

   locked and limited conversation to collaborators on Nov 29, 2024
3. ioquatix

   converted this issue into a discussion #364 on Nov 29, 2024