| #!/usr/bin/env python3 |
| # SPDX-FileCopyrightText: Copyright 2020-2022 Arm Limited and/or its affiliates <open-source-office@arm.com> |
| # |
| # SPDX-License-Identifier: Apache-2.0 |
| # |
| # Licensed under the Apache License, Version 2.0 (the License); you may |
| # not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| # Simple example of the usage of mlw_codec. |
| from typing import Any |
| from typing import List |
| |
| import pytest |
| |
| from ethosu import mlw_codec |
| |
| |
| class TestMLWCodec: |
| """This class is responsible to test the mlw_codec library |
| It mainly tests the two methods encode() and decode() with different inputs""" |
| |
| weights = [0, 2, 3, 0, -1, -2, -3, 0, 0, 0, 1, -250, 240] * 3 |
| compressed_weights = bytearray( |
| b"\xb8\x00\\q^\x1f\xfc\x01\x03\x05\x08\x0c\x10\x908\x12\xd7\x99:\xd2\x99$\xae#\x9d\xa9#\x00\xf0\xff\xff\xff" |
| ) |
| empty_decoded = bytearray(b"\xfe\xffC\x00\xf0\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff") |
| |
| # Generate parameters lists for the tests below |
| encode_testdata = [ |
| (mlw_codec.encode, weights, compressed_weights), |
| pytest.param(mlw_codec.encode, ["a"], empty_decoded, marks=pytest.mark.xfail), # cannot accept strings |
| ] |
| |
| decode_testdata = [(mlw_codec.decode, compressed_weights, weights)] |
| |
| codec_testdata = [ |
| (weights, weights), |
| ([1] * 10, [1] * 10), |
| pytest.param(["a"], ["a"], marks=pytest.mark.xfail), # cannot accept strings |
| ] |
| |
| @pytest.mark.parametrize("function_under_test,test_input,expected", encode_testdata) |
| def test_mlw_codec(self, function_under_test, test_input, expected): |
| self._call_mlw_codec_method(function_under_test, test_input, expected) |
| |
| @pytest.mark.parametrize("function_under_test,test_input,expected", decode_testdata) |
| def test_mlw_decode(self, function_under_test, test_input, expected): |
| self._call_mlw_codec_method(function_under_test, test_input, expected) |
| |
| @pytest.mark.parametrize("test_input,expected", codec_testdata) |
| def test_mlw_encode_decode(self, test_input, expected): |
| output = mlw_codec.decode(mlw_codec.encode(test_input)) |
| assert output == expected |
| |
| def _call_mlw_codec_method(self, method_name, test_input, expected): |
| output = method_name(test_input) |
| assert output == expected |
| |
| invalid_encode_test_data = [None, 3, [4, 5, None, 7], [0, 1, "two", 3], [1, 2, 256, 4], [2, 4, 8, -256]] |
| |
| @pytest.mark.parametrize("input", invalid_encode_test_data) |
| def test_encode_invalid_input(self, input): |
| with pytest.raises(Exception): |
| mlw_codec.encode(input) |
| |
| invalid_decode_test_data: List[Any] = [None, 3, []] |
| |
| @pytest.mark.parametrize("input", invalid_decode_test_data) |
| def test_decode_invalid_input(self, input): |
| with pytest.raises(Exception): |
| mlw_codec.decode(input) |