Pre-requisites:
A quiz with Question order set to: "As shown on the edit screen" and "New page" set to "Never, all questions on one page".

Test Steps:
1. Navigate to the quiz and click "Add>a new question"
2. Create a question of each type.
3. Add a question to a page by clicking "Add>from question bank" and clicking the + icon
4. Select the + icon again and check that the question cannot be added twice.
5. Click the select all checkbox to select all available questions and click the "Add selected questions to quiz button". Check that only the questions that weren't already in the quiz were not added.
6.. Preview the quiz. Ensure that he quiz is displayed correctly.
7. Login as a student and attempt the quiz.
8. Login as teacher, edit the quiz. Verify that there is a message saying you cannot add or remove questions because the quiz has been attempted.