tuplelength-internal.js

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// |reftest| skip-if(!this.hasOwnProperty("Tuple"))

/* Use internal length rather than getting a length property */

var getCalls = 0;

var desc = {

  get: function getLen() {

    getCalls++;

    return 0;

};

var internalLength = Object.getOwnPropertyDescriptor(Tuple.prototype, "length").get;

Object.defineProperty(Tuple.prototype, "length", desc);

let sample = #[42,42,42];

getCalls = 0;

var result = sample.toSorted();

assertEq(getCalls, 0)

assertEq(result, sample);

assertEq(result[0], sample[0]);

assertEq(result[1], sample[1]);

assertEq(result[2], sample[2]);

assertEq(result.length, 0);

assertEq(internalLength.call(result), 3);

reportCompare(0, 0);