1 Request a file as the Blob type with asynchronous XMLHttpRequest in a document context.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
7 PASS req.response.size is 4
9 PASS Set responseType before open(): Successful
10 PASS req.status is 200
11 PASS req.response.size is 4
13 PASS Set responseType before send(): Successful
14 PASS req.status is 200
15 PASS req.response.size is 4
17 PASS Set responseType in HEADERS_RECEIVED: Successful
18 PASS successfullyParsed is true