src/third_party/mozjs-45/js/src/tests/ecma_6/TypedArray/from_realms.js

const constructors = [
    Int8Array,
    Uint8Array,
    Uint8ClampedArray,
    Int16Array,
    Uint16Array,
    Int32Array,
    Uint32Array,
    Float32Array,
    Float64Array ];

if (typeof SharedArrayBuffer != "undefined")
    constructors.push(sharedConstructor(Int8Array),
		      sharedConstructor(Uint8Array),
		      sharedConstructor(Int16Array),
		      sharedConstructor(Uint16Array),
		      sharedConstructor(Int32Array),
		      sharedConstructor(Uint32Array),
		      sharedConstructor(Float32Array),
		      sharedConstructor(Float64Array));

for (var constructor of constructors) {
    if (typeof newGlobal !== 'function' || isSharedConstructor(constructor))
        break;

    // G[constructor.name].from, where G is any global, produces an array whose prototype
    // is G[constructor.name].prototype.
    var g = newGlobal();
    var ga = g[constructor.name].from([1, 2, 3]);
    assertEq(ga instanceof g[constructor.name], true);

    // %TypedArray%.from can be applied to a constructor from another realm.
    var p = constructor.from.call(g[constructor.name], [1, 2, 3]);
    assertEq(p instanceof g[constructor.name], true);
    var q = g[constructor.name].from.call(constructor, [3, 4, 5]);
    assertEq(q instanceof constructor, true);

    // The default 'this' value received by a non-strict mapping function is
    // that function's global, not %TypedArray%.from's global or the caller's global.
    var h = newGlobal(), result = undefined;
    h.mainGlobal = this;
    h.eval("function f() { mainGlobal.result = this; }");
    g[constructor.name].from.call(constructor, [5, 6, 7], h.f);
    // (Give each global in the test a name, for better error messages.  But use
    // globalName, because window.name is complicated.)
    this.globalName = "main";
    g.globalName = "g";
    h.globalName = "h";
    assertEq(result.globalName, "h");
}

if (typeof reportCompare === "function")
    reportCompare(true, true);