This test checks use of the regexp constructor. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS re === RegExp(re) is true PASS re !== new RegExp(re) is true PASS re === RegExp(re,'i') threw exception TypeError: Cannot supply flags when constructing one RegExp from another.. PASS re !== new RegExp(re,'i') threw exception TypeError: Cannot supply flags when constructing one RegExp from another.. PASS successfullyParsed is true TEST COMPLETE