Method createHook

lib/internal/test_runner/test.js:1094–1118

(name, fn, options)

  }

  createHook(name, fn, options) {
    validateOneOf(name, 'hook name', kHookNames);
    // eslint-disable-next-line no-use-before-define
    const hook = new TestHook(fn, options);
    if (name === 'before' || name === 'after') {
      hook.run = runOnce(hook.run, kRunOnceOptions);
    }
    if (name === 'before' && this.startTime !== null) {
      // Test has already started, run the hook immediately
      PromisePrototypeThen(hook.run(this.getRunArgs()), () => {
        if (hook.error != null) {
          this.fail(hook.error);
        }
      });
    }
    if (name === 'afterEach') {
      // afterEach hooks for the current test should run in the order that they
      // are created. However, the current test's afterEach hooks should run
      // prior to any ancestor afterEach hooks.
      ArrayPrototypeSplice(this.hooks[name], this.hooks.ownAfterEachCount, 0, hook);
      this.hooks.ownAfterEachCount++;
    } else {
      ArrayPrototypePush(this.hooks[name], hook);
    }
  }

  fail(err) {
    if (this.error !== null) {