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// Copyright 2017 Leo Balter. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-bigint.prototype.tostring
description: Throws a TypeError if the this value is not a BigInt
info: |
BigInt.prototype.toString ( [ radix ] )
1. Let x be ? thisBigIntValue(this value).
...
The abstract operation thisBigIntValue(value) performs the following steps:
1. If Type(value) is BigInt, return value.
2. If Type(value) is Object and value has a [[BigIntData]] internal slot, then
...
3. Throw a TypeError exception.
features: [BigInt, Symbol.toPrimitive]
---*/
var toString = BigInt.prototype.toString;
assert.throws(TypeError, function() {
toString.call({x: 1n});
}, '{x: 1n}');
assert.throws(TypeError, function() {
toString.call([1n]);
}, '[1n]');
var obj = {
valueOf: function() { throw new Test262Error('no [[BigIntData]]') },
toString: function() { throw new Test262Error('no [[BigIntData]]') },
[Symbol.toPrimitive]: function() { throw new Test262Error('no [[BigIntData]]') }
};
assert.throws(TypeError, function() {
toString.call(obj);
}, '{valueOf, toString, toPrimitive}');
assert.throws(TypeError, function() {
toString.call(0);
}, '0');
assert.throws(TypeError, function() {
toString.call(1);
}, '1');
assert.throws(TypeError, function() {
toString.call(NaN);
}, 'NaN');
assert.throws(TypeError, function() {
toString.call(undefined);
}, 'undefined');
assert.throws(TypeError, function() {
toString.call(null);
}, 'null');
assert.throws(TypeError, function() {
toString.call(true);
}, 'true');
assert.throws(TypeError, function() {
toString.call(false);
}, 'false');
|
