Some thoughts about async storage context for PR 26540

AsyncStorageMixContextTest.js

"use strict";
const common = require("../common");
const assert = require("assert");
const { AsyncContext } = require("async_hooks");

const asyncContext = new AsyncContext();

const tasks = [];

asyncContext.enter(store => {
  store.set("hello", "world");
  tasks.push(() => {
    setTimeout(() => {
      assert.strictEqual(asyncContext.getStore().get("hello"), "world");
    }, 200);
  });
});

asyncContext.enter(store => {
  store.set("hello", "earth");
  tasks.push(() => {
    setTimeout(() => {
      assert.strictEqual(asyncContext.getStore().get("hello"), "earth");
    }, 200);
  });
});

process.once('uncaughtException', () => {
  assert.strictEqual(asyncContext.getStore().get("hello"), "uncaughtException");
});

asyncContext.enter(store => {
  store.set("hello", "uncaughtException");
  tasks.push(() => {
    setTimeout(() => {
      try {
        throw new Error('test');
      } catch (err) {
        process.nextTick(() => {
          throw err;
        });
      }
    }, 200);
  });
});

setTimeout(() => {
  asyncContext.enter(store => {
    store.set("hello", "moon");
    setTimeout(() => {
      assert.strictEqual(asyncContext.getStore().get("hello"), "moon");
      setTimeout(() => {
        tasks.forEach(task => {
          task();
        });
      }, 100);
    }, 200);
  });
}, 100);