1 15.2.3.14-3-4 (TestCases/chapter15/15.2/15.2.3/15.2.3.14/15.2.3.14-3-4.js) Object.keys of an arguments object returns the indices of the given arguments
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS ES5Harness.preconditionPassed is true
7 PASS ES5Harness.testPassed is true
8 PASS successfullyParsed is true