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// Tests for TypedArray#forEach
for (var constructor of anyTypedArrayConstructors) {
assertEq(constructor.prototype.forEach.length, 1);
var arr = new constructor([1, 2, 3, 4, 5]);
// Tests for `thisArg` argument.
function assertThisArg(thisArg, thisValue) {
// In sloppy mode, `this` could be global object or a wrapper of `thisArg`.
arr.forEach(function() {
assertDeepEq(this, thisValue);
return false;
}, thisArg);
// In strict mode, `this` strictly equals `thisArg`.
arr.forEach(function() {
"use strict";
assertDeepEq(this, thisArg);
return false;
}, thisArg);
// Passing `thisArg` has no effect if callback is an arrow function.
var self = this;
arr.forEach(() => {
assertEq(this, self);
return false;
}, thisArg);
}
assertThisArg([1, 2, 3], [1, 2, 3]);
assertThisArg(Object, Object);
assertThisArg(1, Object(1));
assertThisArg("1", Object("1"));
assertThisArg(false, Object(false));
assertThisArg(undefined, this);
assertThisArg(null, this);
// Throw an exception in the callback.
var sum = 0;
var count = 0;
var thrown = false;
try {
assertEq(arr.forEach((v) => {
count++;
sum += v;
if (v === 3) {
throw "forEach";
}
}), undefined)
} catch(e) {
assertEq(e, "forEach");
thrown = true;
}
assertEq(thrown, true);
assertEq(sum, 6);
assertEq(count, 3);
// There is no callback or callback is not a function.
assertThrowsInstanceOf(() => {
arr.forEach();
}, TypeError);
var invalidCallbacks = [undefined, null, 1, false, "", Symbol(), [], {}, /./];
invalidCallbacks.forEach(callback => {
assertThrowsInstanceOf(() => {
arr.forEach(callback);
}, TypeError);
})
// Callback is a generator.
arr.forEach(function*(){
throw "This line will not be executed";
});
// Called from other globals.
if (typeof newGlobal === "function") {
var forEach = newGlobal()[constructor.name].prototype.forEach;
var sum = 0;
forEach.call(new constructor([1, 2, 3]), v => {
sum += v;
});
assertEq(sum, 6);
}
// Throws if `this` isn't a TypedArray.
var invalidReceivers = [undefined, null, 1, false, "", Symbol(), [], {}, /./,
new Proxy(new constructor(), {})];
invalidReceivers.forEach(invalidReceiver => {
assertThrowsInstanceOf(() => {
constructor.prototype.forEach.call(invalidReceiver, () => true);
}, TypeError, "Assert that some fails if this value is not a TypedArray");
});
}
if (typeof reportCompare === "function")
reportCompare(true, true);