selectRange.js - mozsearch

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// |reftest| skip-if(!this.hasOwnProperty('Intl'))

// Any combination returns "other" for "en-US".

  let numbers = [0, 0.5, 1.2, 1.5, 1.7, -1, 1, "1", 123456789.123456789, Infinity, -Infinity];

  const weirdCases = [

    NaN,

    "word",

    [0, 2],

{},

];

  for (let type of ["ordinal", "cardinal"]) {

    let pr = new Intl.PluralRules("en-US", {type});

    for (let start of numbers) {

      for (let end of numbers) {

        assertEq(pr.selectRange(start, end), "other");

    for (let c of weirdCases) {

      assertThrowsInstanceOf(() => pr.selectRange(c, 0), RangeError);

      assertThrowsInstanceOf(() => pr.selectRange(0, c), RangeError);

      assertThrowsInstanceOf(() => pr.selectRange(c, c), RangeError);

// fr (French) returns different results.

  let ordinal = new Intl.PluralRules("fr", {type: "ordinal"});

  let cardinal = new Intl.PluralRules("fr", {type: "cardinal"});

  assertEq(ordinal.selectRange(1, 1), "one");

  assertEq(ordinal.selectRange(0, 1), "other");

  assertEq(cardinal.selectRange(1, 1), "one");

  assertEq(cardinal.selectRange(0, 1), "one");

// cy (Cymraeg) can return any combination.

  let ordinal = new Intl.PluralRules("cy", {type: "ordinal"});

  assertEq(ordinal.selectRange(0, 0), "other");

  assertEq(ordinal.selectRange(0, 1), "one");

  assertEq(ordinal.selectRange(0, 2), "two");

  assertEq(ordinal.selectRange(0, 3), "few");

  assertEq(ordinal.selectRange(0, 5), "many");

  assertEq(ordinal.selectRange(0, 10), "other");

  assertEq(ordinal.selectRange(1, 1), "other");

  assertEq(ordinal.selectRange(1, 2), "two");

  assertEq(ordinal.selectRange(1, 3), "few");

  assertEq(ordinal.selectRange(1, 5), "many");

  assertEq(ordinal.selectRange(1, 10), "other");

  assertEq(ordinal.selectRange(2, 2), "other");

  assertEq(ordinal.selectRange(2, 3), "few");

  assertEq(ordinal.selectRange(2, 5), "many");

  assertEq(ordinal.selectRange(2, 10), "other");

  assertEq(ordinal.selectRange(3, 3), "other");

  assertEq(ordinal.selectRange(3, 5), "many");

  assertEq(ordinal.selectRange(3, 10), "other");

  assertEq(ordinal.selectRange(5, 5), "other");

  assertEq(ordinal.selectRange(5, 10), "other");

  assertEq(ordinal.selectRange(10, 10), "other");

// BigInt inputs aren't allowed.

  let pr = new Intl.PluralRules("en-US");

  assertThrowsInstanceOf(() => pr.selectRange(0, 0n), TypeError);

  assertThrowsInstanceOf(() => pr.selectRange(0n, 0), TypeError);

  assertThrowsInstanceOf(() => pr.selectRange(0n, 0n), TypeError);

if (typeof reportCompare === "function")

  reportCompare(true, true);