1. Log in as a student and go to My private files in the navigation block.
2. Click the add button and upload a text file.
3. Create a folder.
4. Move the text file into the folder.
5. Zip the folder.
6. Rename the zip file.
7. Go to an upload a single file assignment, click the 'Upload a file' button and choose 'Private files' in the file picker.
8. Select the text file, then click the 'Save changes' button.
9. Check that the text file is shown as the assignment submission.