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function testGlobalExec() {
var re = /abc.+de/g;
var c = 0;
for (var i = 0; i < 100; i++) {
re.lastIndex = 0;
if (i === 60) {
Object.freeze(re);
}
try {
re.exec("abcXdef");
} catch (e) {
assertEq(e.toString().includes("lastIndex"), true);
c++;
}
assertEq(re.lastIndex, i >= 60 ? 0 : 6);
}
assertEq(c, 40);
}
testGlobalExec();
function testStickyTest() {
var re = /abc.+de/y;
var c = 0;
for (var i = 0; i < 100; i++) {
re.lastIndex = 0;
if (i === 60) {
Object.freeze(re);
}
try {
re.test("abcXdef");
} catch (e) {
assertEq(e.toString().includes("lastIndex"), true);
c++;
}
assertEq(re.lastIndex, i >= 60 ? 0 : 6);
}
assertEq(c, 40);
}
testStickyTest();
// Must not reset too-large .lastIndex to 0 if non-writable.
function testLastIndexOutOfRange() {
var re = /abc.+de/g;
re.lastIndex = 123;
Object.freeze(re);
for (var i = 0; i < 100; i++) {
var ex = null;
try {
re.exec("abcXdef");
} catch (e) {
ex = e;
}
assertEq(ex.toString().includes("lastIndex"), true);
assertEq(re.lastIndex, 123);
}
}
testLastIndexOutOfRange();
// .lastIndex is ignored for non-global/non-sticky regexps.
function testPlainExec() {
var re = /abc.+de/;
re.lastIndex = 1234;
for (var i = 0; i < 100; i++) {
if (i === 60) {
Object.freeze(re);
}
assertEq(re.exec("abcXdef")[0], "abcXde");
assertEq(re.lastIndex, 1234);
}
}
testPlainExec();
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