test_structuredClone.js

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function run_test() {

  var sb = new Cu.Sandbox("http://www.example.com", {

    wantGlobalProperties: ["structuredClone"],

});

  sb.equal = equal;

  sb.testing = Cu.cloneInto({ xyz: 123 }, sb);

  Cu.evalInSandbox(

    equal(structuredClone("abc"), "abc");

    var obj = { a: 1 };

    obj.self = obj;

    var clone = structuredClone(obj);

    equal(clone.a, 1);

    equal(clone.self, clone);

    var ab = new ArrayBuffer(1);

    clone = structuredClone(ab, { transfer: [ab] });

    equal(clone.byteLength, 1);

    equal(ab.byteLength, 0);

    clone = structuredClone(testing);

    equal(clone.xyz, 123);

`,

sb

);

  const clone = structuredClone({ b: 2 });

  Assert.equal(clone.b, 2);