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Add Duration.toString test for fractionalSecondDigits/smallestUnit 

https://github.com/tc39/proposal-temporal/pull/1956 clarified that the
fractionalSecondDigits and smallestUnit options to
Temporal.Duration.p.toString() specified the exact number of digits after
the decimal point, no more and no less.

This was a normative change that achieved consensus at the December 2021
TC39 meeting.
This commit is contained in:
Philip Chimento 2022-01-18 16:06:07 -08:00 committed by Rick Waldron
parent 8e0c895c4d
commit 6322630064
1 changed files with 37 additions and 0 deletions
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37
test/built-ins/Temporal/Duration/prototype/toString/fractionalseconddigits-exact-number-of-digits.js vendored Normal file
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// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.duration.prototype.tostring
description: |
The fractionalSecondDigits and smallestUnit options determine the exact number
of digits shown after the decimal separator, no more and no less
info: |
sec-temporaldurationtostring step 21:
21. If any of _seconds_, _milliseconds_, _microseconds_, and _nanoseconds_ are not 0; or _years_, _months_, _weeks_, _days_, _hours_, and _minutes_ are all 0; or _precision_ is not *"auto"*; then
features: [Temporal]
---*/
const threeYears = new Temporal.Duration(3);
assert.sameValue(threeYears.toString({ fractionalSecondDigits: 0 }), "P3YT0S");
assert.sameValue(threeYears.toString({ smallestUnit: 'seconds' }), "P3YT0S");
assert.sameValue(threeYears.toString({ smallestUnit: 'milliseconds' }), "P3YT0.000S");
assert.sameValue(threeYears.toString({ fractionalSecondDigits: 5 }), "P3YT0.00000S");
const halfHour = new Temporal.Duration(0, 0, 0, 0, 0, 30);
assert.sameValue(halfHour.toString({ fractionalSecondDigits: 0 }), "PT30M0S");
assert.sameValue(halfHour.toString({ smallestUnit: 'seconds' }), "PT30M0S");
assert.sameValue(halfHour.toString({ smallestUnit: 'milliseconds' }), "PT30M0.000S");
assert.sameValue(halfHour.toString({ fractionalSecondDigits: 5 }), "PT30M0.00000S");
const hundredMs = new Temporal.Duration(0, 0, 0, 0, 0, 0, 0, 100);
assert.sameValue(hundredMs.toString({ fractionalSecondDigits: 0 }), "PT0S");
assert.sameValue(hundredMs.toString({ smallestUnit: 'seconds' }), "PT0S");
assert.sameValue(hundredMs.toString({ smallestUnit: 'milliseconds' }), "PT0.100S");
assert.sameValue(hundredMs.toString({ fractionalSecondDigits: 5 }), "PT0.10000S");
const zero = new Temporal.Duration();
assert.sameValue(zero.toString({ fractionalSecondDigits: 0 }), "PT0S");
assert.sameValue(zero.toString({ smallestUnit: 'seconds' }), "PT0S");
assert.sameValue(zero.toString({ smallestUnit: 'milliseconds' }), "PT0.000S");
assert.sameValue(zero.toString({ fractionalSecondDigits: 5 }), "PT0.00000S");