tuple-length-internal.js

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

/* Ensure that slice uses internal length and not length property */

var getCalls = 0;

var desc = {

  get: function getLen() {

    getCalls++;

    return 0;

};

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

var sample = Object(#[42, 43]);

var result = sample.slice();

assertEq(getCalls, 0, "ignores length properties");

assertEq(result, #[42, 43]);

reportCompare(0, 0);