clone-regexp.js - mozsearch

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// |reftest| skip-if(!xulRuntime.shell)

// -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

// Any copyright is dedicated to the Public Domain.

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

function testRegExp(b, c=b) {

    var a = deserialize(serialize(b));

    assertEq(a === b, false);

    assertEq(Object.getPrototypeOf(a), RegExp.prototype);

    assertEq(Object.prototype.toString.call(a), "[object RegExp]");

    for (p in a)

        throw new Error("cloned RegExp should have no enumerable properties");

    assertEq(a.source, c.source);

    assertEq(a.global, c.global);

    assertEq(a.ignoreCase, c.ignoreCase);

    assertEq(a.multiline, c.multiline);

    assertEq(a.sticky, c.sticky);

    assertEq("expando" in a, false);

testRegExp(RegExp(""));

testRegExp(/(?:)/);

testRegExp(/^(.*)$/gimy);

var re = /\bx\b/gi;

re.expando = true;

testRegExp(re);

// `source` and the flag accessors are defined on RegExp.prototype, so they're

// not available after re.__proto__ has been changed. We solve that by passing

// in an additional copy of the same RegExp to compare the

// serialized-then-deserialized clone with."

re.__proto__ = {};

testRegExp(re, /\bx\b/gi);

reportCompare(0, 0, 'ok');