lastIndex-negative.js

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// A negative lastIndex value must be treated as 0.

function test() {

    var re = /abc.+de/g;

    for (var i = 0; i < 100; i++) {

        re.lastIndex = (i > 60) ? -1 : 0;

        assertEq(typeof re.exec("abcXdef"), "object");

        assertEq(re.lastIndex, 6);

        re.lastIndex = (i > 60) ? -1 : 0;

        assertEq(re.test("abcXdef"), true);

        assertEq(re.lastIndex, 6);

test();