Diego Russo | 56cd4a6 | 2020-04-23 16:41:07 +0100 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| 2 | # Copyright (C) 2020 Arm Limited or its affiliates. All rights reserved. |
| 3 | # |
| 4 | # SPDX-License-Identifier: Apache-2.0 |
| 5 | # |
| 6 | # Licensed under the Apache License, Version 2.0 (the License); you may |
| 7 | # not use this file except in compliance with the License. |
| 8 | # You may obtain a copy of the License at |
| 9 | # |
| 10 | # www.apache.org/licenses/LICENSE-2.0 |
| 11 | # |
| 12 | # Unless required by applicable law or agreed to in writing, software |
| 13 | # distributed under the License is distributed on an AS IS BASIS, WITHOUT |
| 14 | # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | # See the License for the specific language governing permissions and |
| 16 | # limitations under the License. |
| 17 | # Simple example of the usage of mlw_codec. |
| 18 | import pytest |
| 19 | from ethosu import mlw_codec |
| 20 | |
| 21 | |
| 22 | class TestMLWCodec: |
| 23 | """ This class is responsible to test the mlw_codec library |
| 24 | It mainly tests the two methods encode() and decode() with different inputs""" |
| 25 | |
| 26 | weights = [0, 2, 3, 0, -1, -2, -3, 0, 0, 0, 1, -250, 240] * 3 |
| 27 | compressed_weights = bytearray( |
| 28 | 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" |
| 29 | ) |
| 30 | empty_decoded = bytearray(b"\xfe\xffC\x00\xf0\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff") |
| 31 | |
| 32 | # Generate parameters lists for the tests below |
| 33 | encode_testdata = [ |
| 34 | (mlw_codec.encode, weights, compressed_weights), |
| 35 | pytest.param(mlw_codec.encode, ["a"], empty_decoded, marks=pytest.mark.xfail), # cannot accept strings |
| 36 | ] |
| 37 | |
| 38 | decode_testdata = [(mlw_codec.decode, compressed_weights, weights)] |
| 39 | |
| 40 | codec_testdata = [ |
| 41 | (weights, weights), |
| 42 | ([1] * 10, [1] * 10), |
| 43 | pytest.param(["a"], ["a"], marks=pytest.mark.xfail), # cannot accept strings |
| 44 | ] |
| 45 | |
| 46 | @pytest.mark.parametrize("function_under_test,test_input,expected", encode_testdata) |
| 47 | def test_mlw_codec(self, function_under_test, test_input, expected): |
| 48 | self._call_mlw_codec_method(function_under_test, test_input, expected) |
| 49 | |
| 50 | @pytest.mark.parametrize("function_under_test,test_input,expected", decode_testdata) |
| 51 | def test_mlw_decode(self, function_under_test, test_input, expected): |
| 52 | self._call_mlw_codec_method(function_under_test, test_input, expected) |
| 53 | |
| 54 | @pytest.mark.parametrize("test_input,expected", codec_testdata) |
| 55 | def test_mlw_encode_decode(self, test_input, expected): |
| 56 | output = mlw_codec.decode(mlw_codec.encode(test_input)) |
| 57 | assert output == expected |
| 58 | |
| 59 | def _call_mlw_codec_method(self, method_name, test_input, expected): |
| 60 | output = method_name(test_input) |
| 61 | assert output == expected |