This test requires a site, such as http://qa.moodle.net/ where the 'Upload a file' repository is enabled.

1. Log in as a student and in the navigation block go to My profile > My private files.
2. Click the add button and upload (or drag and drop) a file.
3. Create a folder.
4. Move the file into the folder.
5. Zip the folder.
6. Rename the zip file.
7. Click the Save changes button.
8. Go to an assignment which allows file uploads, click the 'Add submission' button and choose 'Private files' in the file picker.
9. Select the file, then click the 'Save changes' button.
10. Check that the text file is shown as the assignment submission.