'Tests when group_access has not been set on anything.'

def test_no_visibility_set(self):

    def verify_all_components_visible_to_all():
        '    Verifies    when    group_access    has    not    been    set    on    anything.    '
        for item in (self.sequential, self.vertical, self.html, self.problem):
            self.assertFalse(utils.has_children_visible_to_specific_partition_groups(item))
            self.assertFalse(utils.is_visible_to_specific_partition_groups(item))
    verify_all_components_visible_to_all()
    self.set_group_access(self.vertical, {1: []})
    self.set_group_access(self.html, {2: None})
    verify_all_components_visible_to_all()
