1 Accessing FileReader when in a detached state.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS fileReader.readAsArrayBuffer(new File(['hello'], 'world.html')) threw exception AbortError: Failed to execute 'readAsArrayBuffer' on 'FileReader': Reading from a Document-detached FileReader is not supported..
7 PASS successfullyParsed is true