Create an assignment with "Online text" enabled as the submission type. 1. As a student attempt to create a submission with no text in the text field. Verify the submission is not accepted because it is empty. 2. As a student attempt to create a submission with only space characters in the text field. Verify the submission is not accepted because it is empty. 3. As a student attempt to create a submission with only newline characters in the text field. Verify the submission is not accepted because it is empty. 4. As a student attempt to create a submission with a single bolded word in the text field. Verify the submission is accepted.