mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 08:17:35 +00:00
LibJS+LibUnicode: Fully implement currency number formatting
Currencies are a bit strange; the layout of currency data in the CLDR is
not particularly compatible with what ECMA-402 expects. For example, the
currency format in the "en" and "ar" locales for the Latin script are:
en: "¤#,##0.00"
ar: "¤\u00A0#,##0.00"
Note how the "ar" locale has a non-breaking space after the currency
symbol (¤), but "en" does not. This does not mean that this space will
appear in the "ar"-formatted string, nor does it mean that a space won't
appear in the "en"-formatted string. This is a runtime decision based on
the currency display chosen by the user ("$" vs. "USD" vs. "US dollar")
and other rules in the Unicode TR-35 spec.
ECMA-402 shies away from the nuances here with "implementation-defined"
steps. LibUnicode will store the data parsed from the CLDR however it is
presented; making decisions about spacing, etc. will occur at runtime
based on user input.
This commit is contained in:
Timothy Flynn
Linus Groh
parent
e9493a2cd5
commit
a701ed52fc
6 changed files with 454 additions and 30 deletions
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@ -355,3 +355,329 @@ describe("style=percent", () => {
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expect(ar.format(-0.01)).toBe("\u061c-\u0661\u066a\u061c");
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});
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});
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describe("style=currency", () => {
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test("currencyDisplay=code", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "code",
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});
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expect(en1.format(1)).toBe("USD\u00a01.00");
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expect(en1.format(1.2)).toBe("USD\u00a01.20");
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expect(en1.format(1.23)).toBe("USD\u00a01.23");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "KHR",
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currencyDisplay: "code",
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});
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expect(en2.format(1)).toBe("KHR\u00a01.00");
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expect(en2.format(1.2)).toBe("KHR\u00a01.20");
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expect(en2.format(1.23)).toBe("KHR\u00a01.23");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "code",
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});
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0USD");
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expect(ar1.format(1.2)).toBe("\u0661\u066b\u0662\u0660\u00a0USD");
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expect(ar1.format(1.23)).toBe("\u0661\u066b\u0662\u0663\u00a0USD");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "code",
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numberingSystem: "latn",
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});
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expect(ar2.format(1)).toBe("USD\u00a01.00");
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expect(ar2.format(1.2)).toBe("USD\u00a01.20");
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expect(ar2.format(1.23)).toBe("USD\u00a01.23");
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});
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test("currencyDisplay=symbol", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "symbol",
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});
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expect(en1.format(1)).toBe("$1.00");
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expect(en1.format(1.2)).toBe("$1.20");
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expect(en1.format(1.23)).toBe("$1.23");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "KHR",
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currencyDisplay: "symbol",
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});
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expect(en2.format(1)).toBe("KHR\u00a01.00");
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expect(en2.format(1.2)).toBe("KHR\u00a01.20");
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expect(en2.format(1.23)).toBe("KHR\u00a01.23");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "symbol",
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});
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(1.2)).toBe("\u0661\u066b\u0662\u0660\u00a0US$");
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expect(ar1.format(1.23)).toBe("\u0661\u066b\u0662\u0663\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "symbol",
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numberingSystem: "latn",
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});
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expect(ar2.format(1)).toBe("US$\u00a01.00");
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expect(ar2.format(1.2)).toBe("US$\u00a01.20");
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expect(ar2.format(1.23)).toBe("US$\u00a01.23");
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});
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test("currencyDisplay=narrowSymbol", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "narrowSymbol",
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});
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expect(en1.format(1)).toBe("$1.00");
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expect(en1.format(1.2)).toBe("$1.20");
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expect(en1.format(1.23)).toBe("$1.23");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "KHR",
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currencyDisplay: "narrowSymbol",
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});
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expect(en2.format(1)).toBe("៛1.00");
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expect(en2.format(1.2)).toBe("៛1.20");
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expect(en2.format(1.23)).toBe("៛1.23");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "narrowSymbol",
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});
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(1.2)).toBe("\u0661\u066b\u0662\u0660\u00a0US$");
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expect(ar1.format(1.23)).toBe("\u0661\u066b\u0662\u0663\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "narrowSymbol",
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numberingSystem: "latn",
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});
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expect(ar2.format(1)).toBe("US$\u00a01.00");
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expect(ar2.format(1.2)).toBe("US$\u00a01.20");
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expect(ar2.format(1.23)).toBe("US$\u00a01.23");
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});
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test("currencyDisplay=name", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "name",
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});
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expect(en1.format(1)).toBe("1.00 US dollars");
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expect(en1.format(1.2)).toBe("1.20 US dollars");
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expect(en1.format(1.23)).toBe("1.23 US dollars");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "KHR",
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currencyDisplay: "name",
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});
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expect(en2.format(1)).toBe("1.00 Cambodian riels");
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expect(en2.format(1.2)).toBe("1.20 Cambodian riels");
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expect(en2.format(1.23)).toBe("1.23 Cambodian riels");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "name",
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});
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660 دولار أمريكي");
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expect(ar1.format(1.2)).toBe("\u0661\u066b\u0662\u0660 دولار أمريكي");
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expect(ar1.format(1.23)).toBe("\u0661\u066b\u0662\u0663 دولار أمريكي");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencyDisplay: "name",
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numberingSystem: "latn",
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});
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expect(ar2.format(1)).toBe("1.00 دولار أمريكي");
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expect(ar2.format(1.2)).toBe("1.20 دولار أمريكي");
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expect(ar2.format(1.23)).toBe("1.23 دولار أمريكي");
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});
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test("signDisplay=never", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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signDisplay: "never",
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});
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expect(en1.format(1)).toBe("$1.00");
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expect(en1.format(-1)).toBe("$1.00");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "never",
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});
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expect(en2.format(1)).toBe("$1.00");
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expect(en2.format(-1)).toBe("$1.00");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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signDisplay: "never",
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});
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "never",
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});
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expect(ar2.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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});
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test("signDisplay=auto", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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signDisplay: "auto",
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});
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expect(en1.format(0)).toBe("$0.00");
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expect(en1.format(1)).toBe("$1.00");
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expect(en1.format(-0)).toBe("-$0.00");
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expect(en1.format(-1)).toBe("-$1.00");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "auto",
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});
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expect(en2.format(0)).toBe("$0.00");
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expect(en2.format(1)).toBe("$1.00");
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expect(en2.format(-0)).toBe("($0.00)");
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expect(en2.format(-1)).toBe("($1.00)");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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signDisplay: "auto",
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});
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expect(ar1.format(0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-0)).toBe("\u061c-\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "auto",
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});
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expect(ar2.format(0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(1)).toBe("\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-0)).toBe("\u061c-\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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});
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test("signDisplay=always", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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signDisplay: "always",
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});
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expect(en1.format(0)).toBe("+$0.00");
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expect(en1.format(1)).toBe("+$1.00");
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expect(en1.format(-0)).toBe("-$0.00");
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expect(en1.format(-1)).toBe("-$1.00");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "always",
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});
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expect(en2.format(0)).toBe("+$0.00");
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expect(en2.format(1)).toBe("+$1.00");
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expect(en2.format(-0)).toBe("($0.00)");
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expect(en2.format(-1)).toBe("($1.00)");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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signDisplay: "always",
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});
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expect(ar1.format(0)).toBe("\u061c+\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(1)).toBe("\u061c+\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-0)).toBe("\u061c-\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "always",
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});
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expect(ar2.format(0)).toBe("\u061c+\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(1)).toBe("\u061c+\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-0)).toBe("\u061c-\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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});
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test("signDisplay=exceptZero", () => {
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const en1 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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signDisplay: "exceptZero",
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});
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expect(en1.format(0)).toBe("$0.00");
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expect(en1.format(1)).toBe("+$1.00");
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expect(en1.format(-0)).toBe("$0.00");
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expect(en1.format(-1)).toBe("-$1.00");
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const en2 = new Intl.NumberFormat("en", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "exceptZero",
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});
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expect(en2.format(0)).toBe("$0.00");
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expect(en2.format(1)).toBe("+$1.00");
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expect(en2.format(-0)).toBe("$0.00");
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expect(en2.format(-1)).toBe("($1.00)");
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const ar1 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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signDisplay: "exceptZero",
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});
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expect(ar1.format(0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(1)).toBe("\u061c+\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar1.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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const ar2 = new Intl.NumberFormat("ar", {
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style: "currency",
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currency: "USD",
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currencySign: "accounting",
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signDisplay: "exceptZero",
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});
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expect(ar2.format(0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(1)).toBe("\u061c+\u0661\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-0)).toBe("\u0660\u066b\u0660\u0660\u00a0US$");
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expect(ar2.format(-1)).toBe("\u061c-\u0661\u066b\u0660\u0660\u00a0US$");
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});
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});
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