$ ./test/runtests.sh
#!/bin/bash -ve
# USAGE: Run this file using `npm test` (must run from repository root)

docker run --rm  --name testserver ubuntu sleep 60 &
trap "docker kill testserver;" EXIT; sleep 1;

mocha --exit test/test.js


  trying client
    1) docker exec wc -c
    ✓ cat on server (511ms)
    ✓ exit code (503ms)
    ✓ connection limit
    ✓ automatic pausing (1007ms)
    ✓ session count
    ✓ resize (3514ms)


  6 passing (49s)
  1 failing

  1) trying client
       docker exec wc -c:
     Error: Timeout of 40000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves. (/Users/john/src/docker-exec-websocket-server/test/test.js)
      at listOnTimeout (node:internal/timers:557:17)
      at processTimers (node:internal/timers:500:7)



docker kill testserver;
testserver
error Command failed with exit code 1.