regexpLastIndexReset.js

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// Bug 1207922 - lastIndex should be reset to 0 when match fails.

var pattern = /abc/;

var string = 'aaaaaaaa';

function test() {

  pattern.lastIndex = 3;

  var result = pattern.exec(string);

  assertEq(result, null);

  assertEq(pattern.lastIndex, 3);

for (let i = 0; i < 10; i++) {

  test();

function test2() {

  pattern.lastIndex = 3;

  var result = pattern.test(string);

  assertEq(result, false);

  assertEq(pattern.lastIndex, 3);

for (let i = 0; i < 10; i++) {

  test2();