execution-order.js

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// Flags: --expose-async-hooks

// Check for correct execution of available hooks and asyncIds
(function() {
  let inited = false, resolved = false, before = false, after = false;
  let storedAsyncId;
  let ah = async_hooks.createHook({
    init(asyncId, type, triggerAsyncId, resource) {
      if (type !== 'PROMISE') {
        return;
      }
      inited = true;
      storedAsyncId = asyncId;
    },
    promiseResolve(asyncId) {
      assertEquals(asyncId, storedAsyncId, 'AsyncId mismatch in resolve hook');
      resolved = true;
    },
    before(asyncId) {
      assertEquals(asyncId, storedAsyncId, 'AsyncId mismatch in before hook');
      before = true;
    },
    after(asyncId) {
      assertEquals(asyncId, storedAsyncId, 'AsyncId mismatch in after hook');
      after = true;
    },
  });
  ah.enable();

  new Promise(function(resolve) {
    resolve(42);
  }).then(function() {
    assertTrue(inited, "Didn't call init hook");
    assertTrue(resolved, "Didn't call resolve hook");
    assertTrue(before, "Didn't call before hook before the callback");
    assertFalse(after, "Called after hook before the callback");
  });
})();