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// Copyright 2016 Mozilla Corporation. All rights reserved.
// This code is governed by the license found in the LICENSE file.
/*---
esid: sec-intl.numberformat.prototype.formattoparts
description: >
Tests that Intl.NumberFormat.prototype.formatToParts converts
its argument (called value) to a number using ToNumber (7.1.3).
info: |
11.1.4 Number Format Functions
4. Let x be ? ToNumber(value).
features: [Symbol]
---*/
const toNumberResults = [
[undefined, NaN],
[null, +0],
[true, 1],
[false, +0],
['42', 42],
['foo', NaN]
];
const nf = new Intl.NumberFormat();
function assertSameParts(actual, expected) {
assert.sameValue(actual.length, expected.length);
for (let i = 0; i < expected.length; ++i) {
assert.sameValue(actual[i].type, expected[i].type);
assert.sameValue(actual[i].value, expected[i].value);
}
}
toNumberResults.forEach(pair => {
const [value, result] = pair;
assertSameParts(nf.formatToParts(value), nf.formatToParts(result));
});
let count = 0;
const dummy = {};
dummy[Symbol.toPrimitive] = hint => (hint === 'number' ? ++count : NaN);
assertSameParts(nf.formatToParts(dummy), nf.formatToParts(count));
assert.sameValue(count, 1);
assert.throws(
TypeError,
() => nf.formatToParts(Symbol()),
"ToNumber(arg) throws a TypeError when arg is of type 'Symbol'"
);
reportCompare(0, 0);