iterator-proto-2.js

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// Iterators of different collection types have different prototypes.

load(libdir + "iteration.js");

var aproto = Object.getPrototypeOf(Array()[Symbol.iterator]());

var mproto = Object.getPrototypeOf((new Map())[Symbol.iterator]());

var sproto = Object.getPrototypeOf((new Set())[Symbol.iterator]());

assertEq(aproto !== mproto, true);

assertEq(aproto !== sproto, true);

assertEq(mproto !== sproto, true);

assertEq(aproto.next !== mproto.next, true);

assertEq(aproto.next !== sproto.next, true);

assertEq(mproto.next !== sproto.next, true);