Open a course with a list of participants in a mobile (not a tablet). Open the profile of a participant. Swipe left/right to navigate between participants profiles. Keep in mind that once you reach the last/first participant, swiping won't work any more and that's the expected behavior. In order to stress-test this feature, it'd be better to test this on a long list of participants, in a way that swiping would load profiles that weren't available in the previous list before triggering infinite loading by scrolling down. After navigating between participants' profiles, going back only once should take you back to the list of participants. The list of participants should have increased if you swiped past the participants that were loaded before. Use search to filter the participants results, and repeat the steps to test that swiping works properly on the filtered list (you should not be able to find participants that didn't appear on the search results by swiping).