Source code

Revision control

Copy as Markdown

Other Tools

/*
* Any copyright is dedicated to the Public Domain.
*/
var BUGNUMBER = 501739;
var summary =
"String.prototype.replace should throw when called with a global RegExp " +
"whose .lastIndex is non-writable";
print(BUGNUMBER + ": " + summary);
/**************
* BEGIN TEST *
**************/
var s = '0x2x4x6x8';
// First time with .lastIndex === 0, replacing to ''
var p1 = /x/g;
Object.defineProperty(p1, "lastIndex", { writable: false });
try
{
s.replace(p1, '');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p1.lastIndex, 0);
}
// Second time with .lastIndex !== 0, replacing to ''
var p2 = /x/g;
Object.defineProperty(p2, "lastIndex", { writable: false, value: 3 });
try
{
s.replace(p2, '');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p2.lastIndex, 3);
}
// Third time with .lastIndex === 0, replacing to 'y'
var p3 = /x/g;
Object.defineProperty(p3, "lastIndex", { writable: false });
try
{
s.replace(p3, 'y');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p3.lastIndex, 0);
}
// Fourth time with .lastIndex !== 0, replacing to 'y'
var p4 = /x/g;
Object.defineProperty(p4, "lastIndex", { writable: false, value: 3 });
try
{
s.replace(p4, '');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p4.lastIndex, 3);
}
// Fifth time with .lastIndex === 0, replacing to 'y', but no match
var p5 = /q/g;
Object.defineProperty(p5, "lastIndex", { writable: false });
try
{
s.replace(p5, 'y');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p5.lastIndex, 0);
}
// Sixth time with .lastIndex !== 0, replacing to 'y', but no match
var p6 = /q/g;
Object.defineProperty(p6, "lastIndex", { writable: false, value: 3 });
try
{
s.replace(p6, '');
throw "didn't throw";
}
catch (e)
{
assertEq(e instanceof TypeError, true,
"should have thrown a TypeError, instead got: " + e);
assertEq(p6.lastIndex, 3);
}
/******************************************************************************/
if (typeof reportCompare === "function")
reportCompare(true, true);
print("Tests complete");