def test_ay_club_display_busy_members_not_hard_coded(self):
club = Club()
returned = club.display_busy_members()
assert len(returned) == 0
def test_az_club_display_busy_members__returns_false_without_any__member(
self):
club = Club()
returned = club.display_busy_members()
assert not returned, True
def test_ax_club_display_busy_members_returns_string(self):
club = Club()
returned = club.display_busy_members()
assert isinstance(returned, str)
