NaN-as-key.js - mozsearch

Enable keyboard shortcuts

/*

 * Any copyright is dedicated to the Public Domain.

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

*/

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

var BUGNUMBER = 722260;

var summary = 'All NaNs must be treated as identical keys for Map';

print(BUGNUMBER + ": " + summary);

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

 * BEGIN TEST *

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

/* Avoid constant-folding that would happen were |undefined| to be used. */

var key = -/a/g.missingProperty;

var m = new Map();

m.set(key, 17);

assertEq(m.get(key), 17);

assertEq(m.get(-key), 17);

assertEq(m.get(NaN), 17);

m.delete(-key);

assertEq(m.has(key), false);

assertEq(m.has(-key), false);

assertEq(m.has(NaN), false);

m.set(-key, 17);

assertEq(m.get(key), 17);

assertEq(m.get(-key), 17);

assertEq(m.get(NaN), 17);

m.delete(NaN);

assertEq(m.has(key), false);

assertEq(m.has(-key), false);

assertEq(m.has(NaN), false);

m.set(NaN, 17);

assertEq(m.get(key), 17);

assertEq(m.get(-key), 17);

assertEq(m.get(NaN), 17);

m.delete(key);

assertEq(m.has(key), false);

assertEq(m.has(-key), false);

assertEq(m.has(NaN), false);

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

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");