stcgal/tests/test_ihex.py

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#
# Copyright (c) 2021 Grigori Goronzy <greg@chown.ath.cx>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
import unittest
import stcgal.ihex
class IHEXTests(unittest.TestCase):
"""Tests for IHEX reader"""
def test_simple(self):
"""Test reading a basic, valid file"""
lines = [
b":0B00000068656C6C6F5F776F726C645A",
b":00000001FF"
]
bindata = stcgal.ihex.IHex.read(lines).extract_data()
self.assertEqual(bindata, b"hello_world")
def test_empty(self):
"""Test reading an empty file"""
lines = []
bindata = stcgal.ihex.IHex.read(lines).extract_data()
self.assertEqual(bindata, b"")
def test_invalid(self):
"""Test invalid encoded data"""
lines = [
":abc"
]
with self.assertRaises(ValueError):
stcgal.ihex.IHex.read(lines)
def test_roundtrip(self):
"""Test round-trip through encoder/decoder"""
bindata = b"12345678"
for mode in (8, 16, 32):
with self.subTest(mode):
hexer = stcgal.ihex.IHex()
hexer.set_mode(mode)
hexer.insert_data(0, bindata)
encoded = hexer.write().encode("ASCII").splitlines()
decoded = stcgal.ihex.IHex.read(encoded).extract_data()
self.assertEqual(decoded, bindata)