Coverage for test/d7a/alp/operands/test_length.py: 100%
26 statements
« prev ^ index » next coverage.py v7.5.0, created at 2024-05-24 08:03 +0200
« prev ^ index » next coverage.py v7.5.0, created at 2024-05-24 08:03 +0200
1#
2# Copyright (c) 2015-2021 University of Antwerp, Aloxy NV.
3#
4# This file is part of pyd7a.
5# See https://github.com/Sub-IoT/pyd7a for further info.
6#
7# Licensed under the Apache License, Version 2.0 (the "License");
8# you may not use this file except in compliance with the License.
9# You may obtain a copy of the License at
10#
11# http://www.apache.org/licenses/LICENSE-2.0
12#
13# Unless required by applicable law or agreed to in writing, software
14# distributed under the License is distributed on an "AS IS" BASIS,
15# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16# See the License for the specific language governing permissions and
17# limitations under the License.
18#
19import unittest
21from bitstring import ConstBitStream
23from d7a.alp.operands.length import Length
26class TestLength(unittest.TestCase):
27 def test_byte_generation(self):
28 bytes = bytearray(Length())
29 self.assertEqual(len(bytes), 1)
30 self.assertEqual(bytes[0], int('00000000', 2))
32 bytes = bytearray(Length(value=4))
33 self.assertEqual(len(bytes), 1)
34 self.assertEqual(bytes[0], int('00000100', 2))
36 bytes = bytearray(Length(value=65120))
37 self.assertEqual(len(bytes), 3)
38 self.assertEqual(bytes[0], int('10000000', 2))
39 self.assertEqual(bytes[1], int('11111110', 2))
40 self.assertEqual(bytes[2], int('01100000', 2))
42 def test_parsing(self):
43 length_bytes = [0x01]
44 length = Length.parse(ConstBitStream(bytes=length_bytes))
45 self.assertEqual(length.value, 1)
47 length_bytes = [0x40, 0x41]
48 length = Length.parse(ConstBitStream(bytes=length_bytes))
49 self.assertEqual(length.value, 65)
51 length_bytes = [0xC0, 0x41, 0x10, 0x00]
52 length = Length.parse(ConstBitStream(bytes=length_bytes))
53 self.assertEqual(length.value, 4263936)