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const TypedArrayPrototype = Object.getPrototypeOf(Int8Array.prototype);
// %TypedArrayPrototype% has an own "toLocaleString" function property.
assertEq(TypedArrayPrototype.hasOwnProperty("toLocaleString"), true);
assertEq(typeof TypedArrayPrototype.toLocaleString, "function");
// The initial value of %TypedArrayPrototype%.toLocaleString is not Array.prototype.toLocaleString.
assertEq(TypedArrayPrototype.toLocaleString === Array.prototype.toLocaleString, false);
// The concrete TypedArray prototypes do not have an own "toLocaleString" property.
assertEq(anyTypedArrayConstructors.every(c => !c.hasOwnProperty("toLocaleString")), true);
assertDeepEq(Object.getOwnPropertyDescriptor(TypedArrayPrototype, "toLocaleString"), {
value: TypedArrayPrototype.toLocaleString,
writable: true,
enumerable: false,
configurable: true,
});
assertEq(TypedArrayPrototype.toLocaleString.name, "toLocaleString");
assertEq(TypedArrayPrototype.toLocaleString.length, 0);
// It's not a generic method.
assertThrowsInstanceOf(() => TypedArrayPrototype.toLocaleString.call(), TypeError);
for (let invalid of [void 0, null, {}, [], function(){}, true, 0, "", Symbol()]) {
assertThrowsInstanceOf(() => TypedArrayPrototype.toLocaleString.call(invalid), TypeError);
}
const localeOne = 1..toLocaleString(),
localeTwo = 2..toLocaleString(),
localeSep = [,,].toLocaleString();
for (let constructor of anyTypedArrayConstructors) {
assertEq(new constructor([]).toLocaleString(), "");
assertEq(new constructor([1]).toLocaleString(), localeOne);
assertEq(new constructor([1, 2]).toLocaleString(), localeOne + localeSep + localeTwo);
}
const originalNumberToLocaleString = Number.prototype.toLocaleString;
// Calls Number.prototype.toLocaleString on each element.
for (let constructor of anyTypedArrayConstructors) {
Number.prototype.toLocaleString = function() {
"use strict";
// Ensure this-value is not boxed.
assertEq(typeof this, "number");
// Test ToString is applied.
return {
valueOf: () => {
throw new Error("valueOf called");
},
toString: () => {
return this + 10;
}
};
};
let typedArray = new constructor([1, 2]);
assertEq(typedArray.toLocaleString(), "11" + localeSep + "12");
}
Number.prototype.toLocaleString = originalNumberToLocaleString;
// Calls Number.prototype.toLocaleString from the current Realm.
const otherGlobal = newGlobal();
for (let constructor of anyTypedArrayConstructors) {
Number.prototype.toLocaleString = function() {
"use strict";
called = true;
return this;
};
let typedArray = new otherGlobal[constructor.name]([1]);
let called = false;
assertEq(TypedArrayPrototype.toLocaleString.call(typedArray), "1");
assertEq(called, true);
}
Number.prototype.toLocaleString = originalNumberToLocaleString;
if (typeof reportCompare === "function")
reportCompare(true, true);