test262/test/built-ins/BigInt/is-a-constructor.js

34 lines
996 B
JavaScript

// Copyright (C) 2020 Rick Waldron. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-ecmascript-standard-built-in-objects
description: >
BigInt is a constructor, and does implement [[Construct]], but is not new target
info: |
sec-bigint-constructor
- is not intended to be used with the new operator or to be subclassed. It may be used as the value of an extends clause of a class definition but a super call to the BigInt constructor will cause an exception.
sec-bigint-constructor-number-value
1. If NewTarget is not undefined, throw a TypeError exception.
includes: [isConstructor.js]
features: [BigInt, Reflect.construct, arrow-function]
---*/
assert.sameValue(
isConstructor(BigInt),
true,
'isConstructor(BigInt) must return true'
);
assert.throws(TypeError, () => {
new BigInt({
valueOf() {
new Test262Error();
}
});
}, '`new BigInt({ valueOf() {new Test262Error();}})` throws TypeError');