test_async_this_context.cjs
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test_async_this_context.cjs
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	// Test that 'this' is preserved in async callbacks

	class AsyncContextTest {
	constructor(name) {
	this.name = name;
	this.value = 100;
	}

	testPromiseThen() {
	console.log('=== testPromiseThen ===');
	console.log('Before promise: this.name = ' + this.name);

	return Promise.resolve(42).then((val) => {
	console.log('Inside .then(): this.name = ' + this.name);
	console.log('Inside .then(): this.value = ' + this.value);
	return this.value + val;
	});
	}

	testNestedPromises() {
	console.log('\n=== testNestedPromises ===');
	console.log('Before promise: this.name = ' + this.name);

	return Promise.resolve(10).then((val1) => {
	console.log('First .then(): this.name = ' + this.name);
	return Promise.resolve(val1 + this.value).then((val2) => {
	console.log('Second .then(): this.name = ' + this.name);
	return val2 * 2;
	});
	});
	}

	testMethodCallingAsync() {
	console.log('\n=== testMethodCallingAsync ===');
	console.log('Before: this.name = ' + this.name);

	const helper = () => {
	console.log('Inside helper: this.name = ' + this.name);
	return this.value;
	};

	return Promise.resolve(1).then(() => {
	console.log('In .then(), calling helper');
	return helper();
	});
	}
	}

	const obj = new AsyncContextTest('TestObject');

	obj.testPromiseThen().then((result) => {
	console.log('Result 1: ' + result);
	});

	obj.testNestedPromises().then((result) => {
	console.log('Result 2: ' + result);
	});

	obj.testMethodCallingAsync().then((result) => {
	console.log('Result 3: ' + result);
	});

	console.log('\n=== All tests queued ===');