chore(tests): maybe fix flaky flock tests (denoland#12122)

cli/tests/unit/flock_test.ts

@@ -78,19 +78,17 @@ async function checkFirstBlocksSecond(opts: {
  await firstProcess.signal();
  await firstProcess.waitSignal(); // entering signal
  await firstProcess.waitSignal(); // entered signal
- await sleep(20);
  // signal the second to enter the lock
  await secondProcess.signal();
  await secondProcess.waitSignal(); // entering signal
- await sleep(20);
+ await sleep(100);
  // signal to the first to exit the lock
  await firstProcess.signal();
- await sleep(20);
+ // collect the final output so we know it's exited the lock
+ const firstPsTimes = await firstProcess.getTimes();
  // signal to the second to exit the lock
  await secondProcess.waitSignal(); // entered signal
  await secondProcess.signal();
- // collect the remaining JSON output of both processes
- const firstPsTimes = await firstProcess.getTimes();
  const secondPsTimes = await secondProcess.getTimes();
  return firstPsTimes.exitTime < secondPsTimes.enterTime;
  } finally {
@@ -126,10 +124,9 @@ function runFlockTestProcess(opts: { exclusive: boolean; sync: boolean }) {
 
  // record the exit time and wait a little bit before releasing
  // the lock so that the enter time of the next process doesn't
- // occur at the same time as this exit time (do double the
- // windows clock resolution)
+ // occur at the same time as this exit time
  const exitTime = new Date().getTime();
- await new Promise((resolve) => setTimeout(resolve, 30));
+ Deno.sleepSync(100);
 
  // release the lock
  ${opts.sync ? "Deno.funlockSync(rid);" : "await Deno.funlock(rid);"}