Coverage for test/d7a/alp/operands/test_offset.py: 100%
36 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
24from d7a.alp.operands.offset import Offset
27class TestOffset(unittest.TestCase):
28 def test_byte_generation(self):
29 bytes = bytearray(Offset())
30 self.assertEqual(len(bytes), 2)
31 self.assertEqual(bytes[0], int('00000000', 2))
32 self.assertEqual(bytes[1], int('00000000', 2))
34 bytes = bytearray(Offset(id=0xFF))
35 self.assertEqual(len(bytes), 2)
36 self.assertEqual(bytes[0], int('11111111', 2))
37 self.assertEqual(bytes[1], int('00000000', 2))
39 bytes = bytearray(Offset(offset=Length(65120)))
40 self.assertEqual(len(bytes), 4)
41 self.assertEqual(bytes[0], int('00000000', 2))
42 self.assertEqual(bytes[1], int('10000000', 2))
43 self.assertEqual(bytes[2], int('11111110', 2))
44 self.assertEqual(bytes[3], int('01100000', 2))
46 def test_parse(self):
47 offset_bytes = [0x20, 0x01]
48 offset = Offset.parse(ConstBitStream(bytes=offset_bytes))
49 self.assertEqual(offset.id, 32)
50 self.assertEqual(offset.offset.value, 1)
52 def test_parse_two_bytes(self):
53 offset_bytes = [0x20, 0x40, 0x41]
54 offset = Offset.parse(ConstBitStream(bytes=offset_bytes))
55 self.assertEqual(offset.offset.value, 65)
57 def test_parse_three_bytes(self):
58 offset_bytes = [0x01, 0x80, 0xfe, 0x60]
59 offset = Offset.parse(ConstBitStream(bytes=offset_bytes))
60 self.assertEqual(offset.id, 1)
61 self.assertEqual(offset.offset.value, 65120)
63 def test_to_str(self):
64 Offset().__str__()