def test_view_change_primary_selection(validators, initial_view_no):
primary = ViewChangeService._find_primary(validators, initial_view_no)
prev_primary = ViewChangeService._find_primary(validators,
initial_view_no - 1)
next_primary = ViewChangeService._find_primary(validators,
initial_view_no + 1)
assert primary in validators
assert prev_primary in validators
assert next_primary in validators
assert primary != prev_primary
assert primary != next_primary
def _primary_in_view(view_no):
return ViewChangeService._find_primary(validators, view_no)