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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.calendar.prototype.fields
description: >
Temporal.Calendar.prototype.fields will throw if its input iterable yields
the same value twice.
info: |
## 12.4.21 Temporal.Calendar.prototype.fields ( fields )
1. Let calendar be the this value.
2. Perform ? RequireInternalSlot(calendar, [[InitializedTemporalCalendar]]).
4. Let iteratorRecord be ? Getiterator(fields, sync).
5. Let fieldNames be a new empty List.
6. Let next be true.
7. Repeat, while next is not false,
a. Set next to ? IteratorStep(iteratorRecord).
b. If next is not false, then
i. Let nextValue be ? IteratorValue(next).
iii. If fieldNames contains nextValue, then
1. Let completion be ThrowCompletion(a newly created RangeError object).
2. Return ? IteratorClose(iteratorRecord, completion).
features: [Symbol, Symbol.iterator, Temporal, computed-property-names, generators]
---*/
let cal = new Temporal.Calendar("iso8601")
let i = 0;
const fields = {
*[Symbol.iterator]() {
yield "month";
i++;
yield "year";
i++;
yield "year";
i++;
}
}
assert.throws(
RangeError, () => cal.fields(fields), "repeated valid value should throw");
assert.sameValue(i, 2, "Should stop at 2");
// Test all valid values will throw when repeated
[ "day", "monthCode", "month", "year" ].forEach((f) => {
i = 0;
const fields2 = {
*[Symbol.iterator]() {
yield f;
i++;
yield f;
i++;
}
}
assert.throws(
RangeError, () => cal.fields(fields2), "repeated valid value should throw");
assert.sameValue(i, 1, "Should stop at 1");
});
reportCompare(0, 0);
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