| This tests that attachments have an instance type of HTMLElement. | |
| On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". | |
| PASS attachment is an instance of HTMLAttachmentElement | |
| PASS attachment.file is null | |
| Setting attachment.file to a file created from resources/test-file.txt | |
| PASS attachment.file is file | |
| PASS attachment.file.name is 'test-file.txt' | |
| PASS successfullyParsed is true | |
| TEST COMPLETE | |