1 This tests that errors from nested importScripts have the expected provenance.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 Starting worker: resources/importScripts-1.js
7 PASS event.type is "error"
8 PASS event.filename.indexOf('invalidScript.js') >= 0 is true
9 PASS successfullyParsed is true