mirror of
				https://github.com/tc39/test262.git
				synced 2025-10-31 11:44:31 +01:00 
			
		
		
		
	
		
			
				
	
	
		
			50 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			50 lines
		
	
	
		
			1.4 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright (C) 2019 Leo Balter, 2020 Rick Waldron. All rights reserved.
 | |
| // This code is governed by the BSD license found in the LICENSE file.
 | |
| 
 | |
| /*---
 | |
| description: >
 | |
|   Gets constructor's `resolve` method once from zero to many invocations.
 | |
| esid: sec-promise.any
 | |
| info: |
 | |
|   5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability).
 | |
|   6. If result is an abrupt completion, then
 | |
|     a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result).
 | |
|     b. IfAbruptRejectPromise(result, promiseCapability).
 | |
| 
 | |
|   Runtime Semantics: PerformPromiseAny
 | |
| 
 | |
|   6. Let promiseResolve be ? Get(constructor, "resolve").
 | |
|   7. If ! IsCallable(promiseResolve) is false, throw a TypeError exception.
 | |
|   8. Repeat
 | |
|     ...
 | |
|     i. Let nextPromise be ? Call(promiseResolve, constructor, « nextValue »).
 | |
| 
 | |
| flags: [async]
 | |
| features: [Promise.any, arrow-function, destructuring-binding]
 | |
| ---*/
 | |
| 
 | |
| let boundPromiseResolve = Promise.resolve.bind(Promise);
 | |
| let getCount = 0;
 | |
| let callCount = 0;
 | |
| 
 | |
| Object.defineProperty(Promise, 'resolve', {
 | |
|   configurable: true,
 | |
|   get() {
 | |
|     getCount += 1;
 | |
|     return function(...args) {
 | |
|       callCount += 1;
 | |
|       return boundPromiseResolve(...args);
 | |
|     };
 | |
|   }
 | |
| });
 | |
| 
 | |
| Promise.any([]).then(() => {
 | |
|     $DONE('The promise should be rejected, but was resolved');
 | |
|   }, ({errors}) => {
 | |
|     assert.sameValue(getCount, 1);
 | |
|     assert.sameValue(callCount, 0);
 | |
|     assert.sameValue(errors.length, 0);
 | |
|   }).then($DONE, $DONE);
 | |
| 
 | |
| 
 |