CONSOLE ERROR: line 2: Uncaught SyntaxError: Unexpected token )
This is a testharness.js-based test.
FAIL AbstractWorker.onerror assert_equals: ErrorEvent.filename expected "file:///.../workers/constructors/Worker/AbstractWorker.onerror.html#" but got "file:///.../workers/constructors/Worker/AbstractWorker.onerror.html"
Harness: the test ran to completion.

