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7810 :: server/client test, using testament

• shirleyquirk (orginal) [2021-04-17T15:31:39+02:00] view original

  I'm trying to make a test for std/net, which starts a server, starts a client, makes sure they connect and know each other's identities, that's about it.

  I don't know much about testament, so i'm looking for an example of a multi-process test, but I've only seen async server tests, or ones that connect to a website or something, is there a way to do this without async?

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• shirleyquirk (orginal) [2021-04-17T18:25:00+02:00] view original

  ok, so i've got this:

  discard """
    action: "compile"
    joinable: false
    batchable: false
    cmd: "bash -c \"nim $target -r --hints:off -d:ssl pskserv.nim & nim $target -r --hints:off -d:ssl -r pskclient.nim\""
    nimout:'''
  accepted connection
  identity hint \"hello\"
  got connection with identity foo'''
  """
  Run

  which runs everything just fine, outputs the right stuff to stdout, exitcode 0, but the test fails with reNimcCrash

  what can i do to make this pass?

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• shirleyquirk (orginal) [2021-04-17T19:17:15+02:00] view original

  got a better one, but i still don't know how to do it for all the backends:

  discard """
    action: "run"
    joinable: false
    batchable: false
  """
  import osproc
  var ps:seq[Process]
  for prog in ["pskserv.nim","pskclient.nim"]:
    ps.add startProcess("nim",args=["c","-r","--hints:off","-d:ssl",prog],options={poUsePath,poDaemon,poStdErrToStdOut})
  
  var (lines,exC) = ps[0].readLines
  assert exC == 0
  assert lines == @["accepted connection","got connection with identity foo"]
  (lines,exC) = ps[1].readLines
  assert exC == 0
  assert lines == @["""identity hint "hello""""]
  
  for p in ps:
    close(p)
  Run

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• dom96 (orginal) [2021-04-17T20:12:01+02:00] view original

  What you can also do is run multiple threads. Spawning processes from another test seems like a hack and is likely to cause flakiness in the long-term :)

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• romano (orginal) [2021-04-23T12:56:07+02:00] view original

  Is there a guide for running multiple threads?

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• giaco (orginal) [2021-04-26T19:02:59+02:00] view original

  I'm using this to test asyncnet sockets

  proc simulateAsyncClientServer*(function: (AsyncSocket, AsyncSocket) -> void) =
      let ssocket = newAsyncSocket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
      let rclient = newAsyncSocket(AF_INET, SOCK_STREAM, IPPROTO_TCP)
      var sclient: AsyncSocket
      defer:
          ssocket.close()
          rclient.close()
          sclient.close()
      let port = 55145.Port
      let host = "127.0.0.1"
      ssocket.setSockOpt(OptReuseAddr, true)
      ssocket.bindAddr(port, host)
      ssocket.listen()
      waitfor rclient.connect(host, port)
      sclient = waitfor ssocket.accept()
      function(sclient, rclient)
  Run

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