Test concurrent call of the same function

test-concurrent-call.js

var longActionCalled = 0,
  firstlongActionCallFinished = false,
  secondRedrawRequested = false;

function longAction() {
  longActionCalled++;

  switch (longActionCalled) {
    case 1:
      render();  // rafs longAction call

      // I don't know if setImmedite can help here. But now it's not realized.
      // setTimeout: "code cannot be executed until the thread that called setTimeout() has terminated."
      setImmediteReally(function () {
        secondRedrawRequested = true;
      });

      while (!secondRedrawRequested);
      firstlongActionCallFinished = true;
      break;

    case 2:
      assert(firstlongActionCallFinished);
      done();
      break;
  }
}

render();