reviver-mutates-holder-object.js

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/*

 * Any copyright is dedicated to the Public Domain.

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

 * Contributor:

 *   Jeff Walden <jwalden+code@mit.edu>

*/

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

var BUGNUMBER = 901351;

var summary = "Behavior when the JSON.parse reviver mutates the holder object";

print(BUGNUMBER + ": " + summary);

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

 * BEGIN TEST *

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

// A little trickiness to account for the undefined-ness of property

// enumeration order.

var first = "unset";

var proxyObj = null;

var obj = JSON.parse('{ "a": 0, "b": 1 }', function(prop, v) {

  if (first === "unset")

    first = prop;

    var second = (prop === "a") ? "b" : "a";

    proxyObj = new Proxy({ c: 42, d: 17 }, {});

    Object.defineProperty(this, second, { value: proxyObj });

  return v;

});

if (first === "a")

  assertEq(obj.a, 0);

  assertEq(obj.b, proxyObj);

  assertEq(obj.b.c, 42);

  assertEq(obj.b.d, 17);

else

  assertEq(obj.a, proxyObj);

  assertEq(obj.a.c, 42);

  assertEq(obj.a.d, 17);

  assertEq(obj.b, 1);

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

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");