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test formatting when microseconds or nanoseconds are the first numeric-styled unit (#4034) 

* test formatting when microseconds or nanoseconds are the first numeric-styled unit

* incorporated Philip Chimento guidance re: padding fractional components
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Ben Allen 2024-04-11 17:02:37 -07:00 committed by GitHub
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test/intl402/DurationFormat/prototype/format/fractions-of-subsecond-units-en.js vendored Normal file
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// Copyright (C) 2024 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-Intl.DurationFormat.prototype.format
description: Checks that fractional milliseconds and microseconds are formatted correctly when microseconds or nanoseconds are the first units with "numeric" style.
info: |
PartitionDurationFormatPattern ( durationFormat, duration )
(...)
9.
(...)
g. If unit is "seconds", "milliseconds", or "microseconds", then
i. If unit is "seconds", then
1. Let nextStyle be durationFormat.[[MillisecondsStyle]].
ii. Else if unit is "milliseconds", then
1. Let nextStyle be durationFormat.[[MicrosecondsStyle]].
iii. Else,
1. Let nextStyle be durationFormat.[[NanosecondsStyle]].
iv. If nextStyle is "fractional", then
1. Set value to value + AddFractionalDigits(durationFormat, duration).
2. If durationFormat.[[FractionalDigits]] is undefined, then
a. Let maximumFractionDigits be 9𝔽.
b. Let minimumFractionDigits be +0𝔽.
3. Else,
a. Let maximumFractionDigits be 𝔽(durationFormat.[[FractionalDigits]]).
b. Let minimumFractionDigits be 𝔽(durationFormat.[[FractionalDigits]]).
4. Perform ! CreateDataPropertyOrThrow(nfOpts, "maximumFractionDigits", maximumFractionDigits ).
5. Perform ! CreateDataPropertyOrThrow(nfOpts, "minimumFractionDigits", minimumFractionDigits ).
6. Perform ! CreateDataPropertyOrThrow(nfOpts, "roundingMode", "trunc").
7. Set done to true.
locale: [en]
features: [Intl.DurationFormat]
---*/
const locale = "en";
const decimalSeparator = ".";
let d = {seconds: 3, milliseconds: 444, microseconds: 55, nanoseconds: 6};
let dfOpts = {microseconds: "numeric"};
let expectedList = [];
expectedList.push(new Intl.NumberFormat(locale, {style: "unit", unit: "second", unitDisplay: "short"}).format(d.seconds));
expectedList.push(new Intl.NumberFormat(locale, {style: "unit", unit: "millisecond", unitDisplay: "short", minimumFractionDigits:0, maximumFractionDigits: 9}).format(d.milliseconds.toString() + decimalSeparator + d.microseconds.toString().padStart(3, '0') + d.nanoseconds.toString().padStart(3, '0')));
let expected = new Intl.ListFormat(locale, {style: "short"}).format(expectedList);
let actual = new Intl.DurationFormat(locale, dfOpts).format(d);
// assert.sameValue(actual, expected, `DurationFormat output when microseconds first "numeric" unit`);
dfOpts = {nanoseconds: "numeric"};
expectedList = [];
expectedList.push(new Intl.NumberFormat(locale, {style: "unit", unit: "second", unitDisplay: "short"}).format(d.seconds));
expectedList.push(new Intl.NumberFormat(locale, {style: "unit", unit: "millisecond", unitDisplay: "short"}).format(d.milliseconds));
expectedList.push(new Intl.NumberFormat(locale, {style: "unit", unit: "microsecond", unitDisplay: "short", minimumFractionDigits:0, maximumFractionDigits: 9}).format(d.microseconds.toString() + decimalSeparator + d.nanoseconds.toString().padStart(3, '0')));
expected = new Intl.ListFormat(locale, {style: "short"}).format(expectedList);
actual = new Intl.DurationFormat(locale, dfOpts).format(d);
assert.sameValue(actual, expected, `DurationFormat output when nanoseconds first "numeric" unit`);