toLocaleUpperCase.js

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

// Test language dependent special casing with different language tags.

for (let locale of ["lt", "LT", "lt-LT", "lt-u-co-phonebk", "lt-x-lietuva"]) {

    assertEq("i\u0307".toLocaleUpperCase(locale), "I");

    assertEq("i\u0307".toLocaleUpperCase([locale]), "I");

    // Additional language tags are ignored.

    assertEq("i\u0307".toLocaleUpperCase([locale, "und"]), "I");

    assertEq("i\u0307".toLocaleUpperCase(["und", locale]), "I\u0307");

// Ensure "lti" (Leti) isn't misrecognized as "lt", even though both share the

// same prefix.

assertEq("i\u0307".toLocaleUpperCase("lti"), "I\u0307");

assertEq("i\u0307".toLocaleUpperCase(["lti"]), "I\u0307");

// Language tag is always verified.

for (let locale of ["no_locale", "lt-invalid_ext", ["no_locale"], ["en", "no_locale"]]) {

    // Empty input string.

    assertThrowsInstanceOf(() => "".toLocaleUpperCase(locale), RangeError);

    // Non-empty input string.

    assertThrowsInstanceOf(() => "a".toLocaleUpperCase(locale), RangeError);

// No locale argument, undefined as locale, and empty array or array-like all

// return the same result. Testing with "a/A" because it has only simple case

// mappings.

assertEq("a".toLocaleUpperCase(), "A");

assertEq("a".toLocaleUpperCase(undefined), "A");

assertEq("a".toLocaleUpperCase([]), "A");

assertEq("a".toLocaleUpperCase({}), "A");

assertEq("a".toLocaleUpperCase({length: 0}), "A");

assertEq("a".toLocaleUpperCase({length: -1}), "A");

// Test with incorrect locale type.

for (let locale of [null, 0, Math.PI, NaN, Infinity, true, false, Symbol()]) {

    // Empty input string.

    assertThrowsInstanceOf(() => "".toLocaleUpperCase([locale]), TypeError);

    // Non-empty input string.

    assertThrowsInstanceOf(() => "a".toLocaleUpperCase([locale]), TypeError);

// Primitives are converted with ToObject and then queried for .length property.

for (let locale of [null]) {

    // Empty input string.

    assertThrowsInstanceOf(() => "".toLocaleUpperCase([locale]), TypeError);

    // Non-empty input string.

    assertThrowsInstanceOf(() => "a".toLocaleUpperCase([locale]), TypeError);

// ToLength(ToObject(<primitive>)) returns 0.

for (let locale of [0, Math.PI, NaN, Infinity, true, false, Symbol()]) {

    // Empty input string.

    assertEq("".toLocaleUpperCase(locale), "");

    // Non-empty input string.

    assertEq("a".toLocaleUpperCase(locale), "A");

if (typeof reportCompare === "function")

    reportCompare(0, 0, "ok");