def test_quatro_nao_e_feliz(self): eh_feliz(4) | should | equal_to(False)
def test_dois_nao_e_feliz(self): eh_feliz(2) | should | equal_to(False)
def test_sete_e_feliz(self): eh_feliz(7) | should | equal_to(True)
def test_dez_e_feliz(self): eh_feliz(10) | should | equal_to(True)