15.2.3.14-1-3 (TestCases/chapter15/15.2/15.2.3/15.2.3.14/15.2.3.14-1-3.js) Object.keys throws TypeError if type of first param is not Object (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