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LibJS: Begin implementing Intl.NumberFormat.prototype.format
There is quite a lot to be done here so this is just a first pass at
number formatting. Decimal and percent formatting are mostly working,
but only for standard and compact notation (engineering and scientific
notation are not implemented here). Currency formatting is parsed, but
there is more work to be done to handle e.g. using symbols instead of
currency codes ("$" instead of "USD"), and putting spaces around the
currency symbol ("USD 2.00" instead of "USD2.00").
This commit is contained in:
Timothy Flynn
Linus Groh
parent
0469006263
commit
89523f70cf
8 changed files with 1433 additions and 1 deletions
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@ -0,0 +1,357 @@
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describe("errors", () => {
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test("called on non-NumberFormat object", () => {
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expect(() => {
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Intl.NumberFormat.prototype.format;
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}).toThrowWithMessage(TypeError, "Not an object of type Intl.NumberFormat");
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expect(() => {
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Intl.NumberFormat.prototype.format(1);
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}).toThrowWithMessage(TypeError, "Not an object of type Intl.NumberFormat");
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});
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test("called with value that cannot be converted to a number", () => {
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expect(() => {
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Intl.NumberFormat().format(Symbol.hasInstance);
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}).toThrowWithMessage(TypeError, "Cannot convert symbol to number");
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});
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});
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describe("special values", () => {
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test("NaN", () => {
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const en = new Intl.NumberFormat("en");
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expect(en.format()).toBe("NaN");
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expect(en.format(NaN)).toBe("NaN");
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expect(en.format(undefined)).toBe("NaN");
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const ar = new Intl.NumberFormat("ar");
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expect(ar.format()).toBe("ليس رقم");
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expect(ar.format(NaN)).toBe("ليس رقم");
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expect(ar.format(undefined)).toBe("ليس رقم");
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});
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test("Infinity", () => {
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const en = new Intl.NumberFormat("en");
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expect(en.format(Infinity)).toBe("∞");
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expect(en.format(-Infinity)).toBe("-∞");
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const ar = new Intl.NumberFormat("ar");
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expect(ar.format(Infinity)).toBe("∞");
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expect(ar.format(-Infinity)).toBe("\u061c-∞");
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});
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});
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describe("style=decimal", () => {
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test("default", () => {
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const en = new Intl.NumberFormat("en");
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expect(en.format(1)).toBe("1");
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expect(en.format(12)).toBe("12");
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expect(en.format(123)).toBe("123");
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const ar = new Intl.NumberFormat("ar");
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expect(ar.format(1)).toBe("\u0661");
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expect(ar.format(12)).toBe("\u0661\u0662");
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expect(ar.format(123)).toBe("\u0661\u0662\u0663");
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});
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test("integer digits", () => {
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const en = new Intl.NumberFormat("en", { minimumIntegerDigits: 2 });
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expect(en.format(1)).toBe("01");
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expect(en.format(12)).toBe("12");
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expect(en.format(123)).toBe("123");
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const ar = new Intl.NumberFormat("ar", { minimumIntegerDigits: 2 });
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expect(ar.format(1)).toBe("\u0660\u0661");
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expect(ar.format(12)).toBe("\u0661\u0662");
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expect(ar.format(123)).toBe("\u0661\u0662\u0663");
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});
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test("significant digits", () => {
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const en = new Intl.NumberFormat("en", {
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minimumSignificantDigits: 4,
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maximumSignificantDigits: 6,
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});
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expect(en.format(1)).toBe("1.000");
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expect(en.format(12)).toBe("12.00");
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expect(en.format(12.3)).toBe("12.30");
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expect(en.format(12.34)).toBe("12.34");
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expect(en.format(12.345)).toBe("12.345");
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expect(en.format(12.3456)).toBe("12.3456");
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expect(en.format(12.34567)).toBe("12.3457");
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expect(en.format(12.34561)).toBe("12.3456");
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const ar = new Intl.NumberFormat("ar", {
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minimumSignificantDigits: 4,
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maximumSignificantDigits: 6,
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});
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expect(ar.format(1)).toBe("\u0661\u066b\u0660\u0660\u0660");
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expect(ar.format(12)).toBe("\u0661\u0662\u066b\u0660\u0660");
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expect(ar.format(12.3)).toBe("\u0661\u0662\u066b\u0663\u0660");
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expect(ar.format(12.34)).toBe("\u0661\u0662\u066b\u0663\u0664");
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expect(ar.format(12.345)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665");
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expect(ar.format(12.3456)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0666");
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expect(ar.format(12.34567)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0667");
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expect(ar.format(12.34561)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0666");
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});
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test("fraction digits", () => {
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const en = new Intl.NumberFormat("en", {
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minimumFractionDigits: 3,
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maximumFractionDigits: 5,
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});
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expect(en.format(1)).toBe("1.000");
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expect(en.format(12)).toBe("12.000");
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expect(en.format(1.2)).toBe("1.200");
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expect(en.format(1.23)).toBe("1.230");
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expect(en.format(1.234)).toBe("1.234");
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expect(en.format(1.2345)).toBe("1.2345");
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expect(en.format(1.23456)).toBe("1.23456");
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expect(en.format(1.234567)).toBe("1.23457");
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expect(en.format(1.234561)).toBe("1.23456");
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const ar = new Intl.NumberFormat("ar", {
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minimumFractionDigits: 3,
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maximumFractionDigits: 5,
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});
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expect(ar.format(1)).toBe("\u0661\u066b\u0660\u0660\u0660");
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expect(ar.format(12)).toBe("\u0661\u0662\u066b\u0660\u0660\u0660");
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expect(ar.format(1.2)).toBe("\u0661\u066b\u0662\u0660\u0660");
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expect(ar.format(1.23)).toBe("\u0661\u066b\u0662\u0663\u0660");
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expect(ar.format(1.234)).toBe("\u0661\u066b\u0662\u0663\u0664");
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expect(ar.format(1.2345)).toBe("\u0661\u066b\u0662\u0663\u0664\u0665");
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expect(ar.format(1.23456)).toBe("\u0661\u066b\u0662\u0663\u0664\u0665\u0666");
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expect(ar.format(1.234567)).toBe("\u0661\u066b\u0662\u0663\u0664\u0665\u0667");
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expect(ar.format(1.234561)).toBe("\u0661\u066b\u0662\u0663\u0664\u0665\u0666");
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});
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test("notation=compact", () => {
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const en = new Intl.NumberFormat("en", { notation: "compact" });
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expect(en.format(1)).toBe("1");
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expect(en.format(1.2)).toBe("1.2");
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expect(en.format(1.23)).toBe("1.2");
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expect(en.format(1.29)).toBe("1.3");
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expect(en.format(12)).toBe("12");
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expect(en.format(12.3)).toBe("12");
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expect(en.format(12.34)).toBe("12");
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const ar = new Intl.NumberFormat("ar", { notation: "compact" });
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expect(ar.format(1)).toBe("\u0661");
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expect(ar.format(1.2)).toBe("\u0661\u066b\u0662");
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expect(ar.format(1.23)).toBe("\u0661\u066b\u0662");
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expect(ar.format(1.29)).toBe("\u0661\u066b\u0663");
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expect(ar.format(12)).toBe("\u0661\u0662");
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expect(ar.format(12.3)).toBe("\u0661\u0662");
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expect(ar.format(12.34)).toBe("\u0661\u0662");
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});
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test("signDisplay=never", () => {
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const en = new Intl.NumberFormat("en", { signDisplay: "never" });
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expect(en.format(1)).toBe("1");
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expect(en.format(-1)).toBe("1");
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const ar = new Intl.NumberFormat("ar", { signDisplay: "never" });
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expect(ar.format(1)).toBe("\u0661");
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expect(ar.format(-1)).toBe("\u0661");
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});
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test("signDisplay=auto", () => {
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const en = new Intl.NumberFormat("en", { signDisplay: "auto" });
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expect(en.format(0)).toBe("0");
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expect(en.format(1)).toBe("1");
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expect(en.format(-0)).toBe("-0");
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expect(en.format(-1)).toBe("-1");
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const ar = new Intl.NumberFormat("ar", { signDisplay: "auto" });
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expect(ar.format(0)).toBe("\u0660");
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expect(ar.format(1)).toBe("\u0661");
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expect(ar.format(-0)).toBe("\u061c-\u0660");
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expect(ar.format(-1)).toBe("\u061c-\u0661");
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});
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test("signDisplay=always", () => {
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const en = new Intl.NumberFormat("en", { signDisplay: "always" });
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expect(en.format(0)).toBe("+0");
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expect(en.format(1)).toBe("+1");
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expect(en.format(-0)).toBe("-0");
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expect(en.format(-1)).toBe("-1");
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const ar = new Intl.NumberFormat("ar", { signDisplay: "always" });
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expect(ar.format(0)).toBe("\u061c+\u0660");
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expect(ar.format(1)).toBe("\u061c+\u0661");
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expect(ar.format(-0)).toBe("\u061c-\u0660");
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expect(ar.format(-1)).toBe("\u061c-\u0661");
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});
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test("signDisplay=exceptZero", () => {
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const en = new Intl.NumberFormat("en", { signDisplay: "exceptZero" });
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expect(en.format(0)).toBe("0");
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expect(en.format(1)).toBe("+1");
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expect(en.format(-0)).toBe("0");
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expect(en.format(-1)).toBe("-1");
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const ar = new Intl.NumberFormat("ar", { signDisplay: "exceptZero" });
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expect(ar.format(0)).toBe("\u0660");
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expect(ar.format(1)).toBe("\u061c+\u0661");
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expect(ar.format(-0)).toBe("\u0660");
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expect(ar.format(-1)).toBe("\u061c-\u0661");
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});
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});
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describe("style=percent", () => {
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test("default", () => {
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const en = new Intl.NumberFormat("en", { style: "percent" });
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expect(en.format(1)).toBe("100%");
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expect(en.format(1.2)).toBe("120%");
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expect(en.format(0.234)).toBe("23%");
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const ar = new Intl.NumberFormat("ar", { style: "percent" });
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expect(ar.format(1)).toBe("\u0661\u0660\u0660\u066a\u061c");
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expect(ar.format(1.2)).toBe("\u0661\u0662\u0660\u066a\u061c");
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expect(ar.format(0.234)).toBe("\u0662\u0663\u066a\u061c");
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});
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test("integer digits", () => {
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const en = new Intl.NumberFormat("en", { style: "percent", minimumIntegerDigits: 2 });
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expect(en.format(0.01)).toBe("01%");
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expect(en.format(0.12)).toBe("12%");
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expect(en.format(1.23)).toBe("123%");
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const ar = new Intl.NumberFormat("ar", { style: "percent", minimumIntegerDigits: 2 });
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expect(ar.format(0.01)).toBe("\u0660\u0661\u066a\u061c");
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expect(ar.format(0.12)).toBe("\u0661\u0662\u066a\u061c");
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expect(ar.format(1.23)).toBe("\u0661\u0662\u0663\u066a\u061c");
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});
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test("significant digits", () => {
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const en = new Intl.NumberFormat("en", {
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style: "percent",
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minimumSignificantDigits: 4,
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maximumSignificantDigits: 6,
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});
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expect(en.format(0.1)).toBe("10.00%");
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expect(en.format(1.2)).toBe("120.0%");
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expect(en.format(1.23)).toBe("123.0%");
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expect(en.format(1.234)).toBe("123.4%");
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expect(en.format(1.2345)).toBe("123.45%");
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expect(en.format(1.23456)).toBe("123.456%");
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expect(en.format(1.234567)).toBe("123.457%");
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expect(en.format(1.234561)).toBe("123.456%");
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const ar = new Intl.NumberFormat("ar", {
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style: "percent",
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minimumSignificantDigits: 4,
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maximumSignificantDigits: 6,
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});
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expect(ar.format(0.1)).toBe("\u0661\u0660\u066b\u0660\u0660\u066a\u061c");
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expect(ar.format(1.2)).toBe("\u0661\u0662\u0660\u066b\u0660\u066a\u061c");
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expect(ar.format(1.23)).toBe("\u0661\u0662\u0663\u066b\u0660\u066a\u061c");
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expect(ar.format(1.234)).toBe("\u0661\u0662\u0663\u066b\u0664\u066a\u061c");
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expect(ar.format(1.2345)).toBe("\u0661\u0662\u0663\u066b\u0664\u0665\u066a\u061c");
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expect(ar.format(1.23456)).toBe("\u0661\u0662\u0663\u066b\u0664\u0665\u0666\u066a\u061c");
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expect(ar.format(1.234567)).toBe("\u0661\u0662\u0663\u066b\u0664\u0665\u0667\u066a\u061c");
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expect(ar.format(1.234561)).toBe("\u0661\u0662\u0663\u066b\u0664\u0665\u0666\u066a\u061c");
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});
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test("fraction digits", () => {
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const en = new Intl.NumberFormat("en", {
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style: "percent",
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minimumFractionDigits: 2,
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maximumFractionDigits: 4,
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});
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expect(en.format(0.01)).toBe("1.00%");
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expect(en.format(0.1)).toBe("10.00%");
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expect(en.format(0.12)).toBe("12.00%");
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expect(en.format(0.123)).toBe("12.30%");
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expect(en.format(0.1234)).toBe("12.34%");
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expect(en.format(0.12345)).toBe("12.345%");
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expect(en.format(0.123456)).toBe("12.3456%");
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expect(en.format(0.1234567)).toBe("12.3457%");
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expect(en.format(0.1234561)).toBe("12.3456%");
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const ar = new Intl.NumberFormat("ar", {
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style: "percent",
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minimumFractionDigits: 2,
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maximumFractionDigits: 4,
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});
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expect(ar.format(0.01)).toBe("\u0661\u066b\u0660\u0660\u066a\u061c");
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expect(ar.format(0.1)).toBe("\u0661\u0660\u066b\u0660\u0660\u066a\u061c");
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expect(ar.format(0.12)).toBe("\u0661\u0662\u066b\u0660\u0660\u066a\u061c");
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expect(ar.format(0.123)).toBe("\u0661\u0662\u066b\u0663\u0660\u066a\u061c");
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expect(ar.format(0.1234)).toBe("\u0661\u0662\u066b\u0663\u0664\u066a\u061c");
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expect(ar.format(0.12345)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u066a\u061c");
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expect(ar.format(0.123456)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0666\u066a\u061c");
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expect(ar.format(0.1234567)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0667\u066a\u061c");
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expect(ar.format(0.1234561)).toBe("\u0661\u0662\u066b\u0663\u0664\u0665\u0666\u066a\u061c");
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});
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test("notation=compact", () => {
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const en = new Intl.NumberFormat("en", { style: "percent", notation: "compact" });
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expect(en.format(0.01)).toBe("1%");
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expect(en.format(0.012)).toBe("1.2%");
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expect(en.format(0.0123)).toBe("1.2%");
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expect(en.format(0.0129)).toBe("1.3%");
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expect(en.format(0.12)).toBe("12%");
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expect(en.format(0.123)).toBe("12%");
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expect(en.format(0.1234)).toBe("12%");
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const ar = new Intl.NumberFormat("ar", { style: "percent", notation: "compact" });
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expect(ar.format(0.01)).toBe("\u0661\u066a\u061c");
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expect(ar.format(0.012)).toBe("\u0661\u066b\u0662\u066a\u061c");
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expect(ar.format(0.0123)).toBe("\u0661\u066b\u0662\u066a\u061c");
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expect(ar.format(0.0129)).toBe("\u0661\u066b\u0663\u066a\u061c");
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expect(ar.format(0.12)).toBe("\u0661\u0662\u066a\u061c");
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expect(ar.format(0.123)).toBe("\u0661\u0662\u066a\u061c");
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expect(ar.format(0.1234)).toBe("\u0661\u0662\u066a\u061c");
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});
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test("signDisplay=never", () => {
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const en = new Intl.NumberFormat("en", { style: "percent", signDisplay: "never" });
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expect(en.format(0.01)).toBe("1%");
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expect(en.format(-0.01)).toBe("1%");
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const ar = new Intl.NumberFormat("ar", { style: "percent", signDisplay: "never" });
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expect(ar.format(0.01)).toBe("\u0661\u066a\u061c");
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expect(ar.format(-0.01)).toBe("\u0661\u066a\u061c");
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});
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test("signDisplay=auto", () => {
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const en = new Intl.NumberFormat("en", { style: "percent", signDisplay: "auto" });
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expect(en.format(0.0)).toBe("0%");
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expect(en.format(0.01)).toBe("1%");
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expect(en.format(-0.0)).toBe("-0%");
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expect(en.format(-0.01)).toBe("-1%");
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const ar = new Intl.NumberFormat("ar", { style: "percent", signDisplay: "auto" });
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expect(ar.format(0.0)).toBe("\u0660\u066a\u061c");
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expect(ar.format(0.01)).toBe("\u0661\u066a\u061c");
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expect(ar.format(-0.0)).toBe("\u061c-\u0660\u066a\u061c");
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expect(ar.format(-0.01)).toBe("\u061c-\u0661\u066a\u061c");
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});
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test("signDisplay=always", () => {
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const en = new Intl.NumberFormat("en", { style: "percent", signDisplay: "always" });
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expect(en.format(0.0)).toBe("+0%");
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expect(en.format(0.01)).toBe("+1%");
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expect(en.format(-0.0)).toBe("-0%");
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expect(en.format(-0.01)).toBe("-1%");
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|
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const ar = new Intl.NumberFormat("ar", { style: "percent", signDisplay: "always" });
|
||||
expect(ar.format(0.0)).toBe("\u061c+\u0660\u066a\u061c");
|
||||
expect(ar.format(0.01)).toBe("\u061c+\u0661\u066a\u061c");
|
||||
expect(ar.format(-0.0)).toBe("\u061c-\u0660\u066a\u061c");
|
||||
expect(ar.format(-0.01)).toBe("\u061c-\u0661\u066a\u061c");
|
||||
});
|
||||
|
||||
test("signDisplay=exceptZero", () => {
|
||||
const en = new Intl.NumberFormat("en", { style: "percent", signDisplay: "exceptZero" });
|
||||
expect(en.format(0.0)).toBe("0%");
|
||||
expect(en.format(0.01)).toBe("+1%");
|
||||
expect(en.format(-0.0)).toBe("0%");
|
||||
expect(en.format(-0.01)).toBe("-1%");
|
||||
|
||||
const ar = new Intl.NumberFormat("ar", { style: "percent", signDisplay: "exceptZero" });
|
||||
expect(ar.format(0.0)).toBe("\u0660\u066a\u061c");
|
||||
expect(ar.format(0.01)).toBe("\u061c+\u0661\u066a\u061c");
|
||||
expect(ar.format(-0.0)).toBe("\u0660\u066a\u061c");
|
||||
expect(ar.format(-0.01)).toBe("\u061c-\u0661\u066a\u061c");
|
||||
});
|
||||
});
|
||||
Loading…
Add table
Add a link
Reference in a new issue