WeakMap-constructor-5.js

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// new WeakMap(arr) throws if arr contains holes (or undefined values).

load(libdir + "asserts.js");

var k1 = {};

var v1 = 42;

var k2 = {};

var v2 = 43;

var k3 = {};

var v3 = {};

assertThrowsInstanceOf(function () { new WeakMap([undefined]); }, TypeError);

assertThrowsInstanceOf(function () { new WeakMap([null]); }, TypeError);

assertThrowsInstanceOf(function () { new WeakMap([[k1, v1], [k2, v2], , [k3, k3]]); }, TypeError);

assertThrowsInstanceOf(function () { new WeakMap([[k1, v1], [k2, v2], ,]); }, TypeError);

// new WeakMap(iterable) throws if iterable doesn't have array-like objects

assertThrowsInstanceOf(function () { new WeakMap([1, 2, 3]); }, TypeError);

assertThrowsInstanceOf(function () {

  let s = new Set([1, 2, "abc"]);

  new WeakMap(s);

}, TypeError);