importunittestclassTestFrameworkProto(unittest.TestCase):deftest_all(self):op_proto=op_proto_lib.OpProto()ipt0=op_proto.inputs.add()ipt0.name="a"ipt0.comment="the input of cosine op"ipt1=op_proto.inputs.add()ipt1.name="b"ipt1.comment="the other input of cosine op"opt=op_proto.outputs.add()opt.name="output"opt.comment="the output of cosine op"op_proto.comment="cosine op, output = scale*cos(a, b)"attr=op_proto.attrs.add()attr.name="scale"attr.comment="scale of cosine op"attr.type=attr_type_lib.FLOATop_proto.type="cos"self.assertTrue(op_proto.IsInitialized())