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'use strict';
const common = require('../common');
const assert = require('assert');
const { AsyncLocalStorage } = require('async_hooks');
// This test verifies that async local storage works with thenables
const store = new AsyncLocalStorage();
const data = Symbol('verifier');
const then = common.mustCall((cb) => {
assert.strictEqual(store.getStore(), data);
setImmediate(cb);
}, 4);
function thenable() {
return {
then
};
}
// Await a thenable
store.run(data, async () => {
assert.strictEqual(store.getStore(), data);
await thenable();
assert.strictEqual(store.getStore(), data);
});
// Returning a thenable in an async function
store.run(data, async () => {
try {
assert.strictEqual(store.getStore(), data);
return thenable();
} finally {
assert.strictEqual(store.getStore(), data);
}
});
// Resolving a thenable
store.run(data, () => {
assert.strictEqual(store.getStore(), data);
Promise.resolve(thenable());
assert.strictEqual(store.getStore(), data);
});
// Returning a thenable in a then handler
store.run(data, () => {
assert.strictEqual(store.getStore(), data);
Promise.resolve().then(() => thenable());
assert.strictEqual(store.getStore(), data);
});