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LibJS+LibUnicode: Generate missing patterns with fractionalSecondDigits
TR-35's Matching Skeleton algorithm dictates how user requests including fractional second digits should be handled when the CLDR format pattern does not include that field. When the format pattern contains {second}, but does not contain {fractionalSecondDigits}, generate a second pattern which appends "{decimal}{fractionalSecondDigits}" to the {second} field.
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3 changed files with 46 additions and 7 deletions
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@ -1,6 +1,3 @@
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// NOTE: We cannot yet test the fractionalSecondDigits option. There aren't any patterns in the CLDR
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// with this field ('S' in https://unicode.org/reports/tr35/tr35-dates.html#dfst-second). We
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// will need to figure out how this field should be generated.
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describe("correct behavior", () => {
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test("length is 0", () => {
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expect(Intl.DateTimeFormat.prototype.resolvedOptions).toHaveLength(0);
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@ -179,6 +176,15 @@ describe("correct behavior", () => {
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});
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});
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test("fractionalSecondDigits", () => {
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[1, 2, 3].forEach(fractionalSecondDigits => {
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const en = new Intl.DateTimeFormat("en", {
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fractionalSecondDigits: fractionalSecondDigits,
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});
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expect(en.resolvedOptions().fractionalSecondDigits).toBe(fractionalSecondDigits);
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});
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});
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test("timeZoneName", () => {
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["short", "long"].forEach(timeZoneName => {
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const en = new Intl.DateTimeFormat("en", { timeZoneName: timeZoneName });
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