Coverage for test/d7a/alp/operands/test_file.py: 90%

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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# 

19 

20# author: Christophe VG <contact@christophe.vg> 

21# unit tests for the D7 File {*} Operands 

22 

23import unittest 

24 

25from d7a.alp.operands.file import Data 

26 

27class TestData(unittest.TestCase): 

28 def test_default_data_constructor(self): 

29 Data() 

30 

31 def test_data_bad_offset(self): 

32 def bad(): Data(Data()) 

33 self.assertRaises(ValueError, bad) 

34 

35 def test_data_length(self): 

36 d = Data(data=[0xd7, 0x04, 0x00]) 

37 self.assertEqual(d.length.value, 3) 

38 self.assertEqual(len(d), 3) 

39 

40 def test_byte_generation(self): 

41 bytes = bytearray(Data()) 

42 self.assertEqual(len(bytes), 3) 

43 self.assertEqual(bytes[0], int('00000000', 2)) # offset 

44 self.assertEqual(bytes[1], int('00000000', 2)) # offset 

45 self.assertEqual(bytes[2], int('00000000', 2)) 

46 

47 bytes = bytearray(Data(data=[0x01,0x02,0x03,0x04])) 

48 self.assertEqual(len(bytes), 7) 

49 self.assertEqual(bytes[0], int('00000000', 2)) # offset 

50 self.assertEqual(bytes[1], int('00000000', 2)) # offset 

51 self.assertEqual(bytes[2], int('00000100', 2)) # length = 4 

52 self.assertEqual(bytes[3], int('00000001', 2)) 

53 self.assertEqual(bytes[4], int('00000010', 2)) 

54 self.assertEqual(bytes[5], int('00000011', 2)) 

55 self.assertEqual(bytes[6], int('00000100', 2)) 

56 

57if __name__ == '__main__': 

58 for case in [TestOffset, TestData]: 

59 suite = unittest.TestLoader().loadTestsFromTestCase(case) 

60 unittest.TextTestRunner(verbosity=2).run(suite)