| 15.4.4.15-3-21 (TestCases/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-3-21.js) Array.prototype.lastIndexOf when 'length' is an object that has an own valueOf method that returns an object and toString method that returns a string | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS ES5Harness.preconditionPassed is true | |
| PASS ES5Harness.testPassed is true | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |