json-stringify-replacer-array-revocable-proxy.js

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// Any copyright is dedicated to the Public Domain.

// http://creativecommons.org/licenses/publicdomain/

var gTestfile = "json-stringify-replacer-array-revocable-proxy.js";

//-----------------------------------------------------------------------------

var BUGNUMBER = 1196497;

var summary =

  "Don't assert when JSON.stringify is passed a revocable proxy to an array, " +

  "then that proxy is revoked midflight during stringification";

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

var arr = [];

var { proxy, revoke } = Proxy.revocable(arr, {

  get(thisv, prop, receiver) {

    // First (and only) get will be for "length", to determine the length of the

    // list of properties to serialize.  Returning 0 uses the empty list,

    // resulting in |a: 0| being ignored below.

    assertEq(thisv, arr);

    assertEq(prop, "length");

    assertEq(receiver, proxy);

    revoke();

    return 0;

});

assertEq(JSON.stringify({a: 0}, proxy), "{}");

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");