def test_bytes_to_intel_hex_invalid_data():
"""Test there is an error thrown if the input data is invalid."""
data = [1, 2, 3, 4, "500"]
try:
cmds._bytes_to_intel_hex(data=data)
except Exception:
# The exception that bubbles up from IntelHex is implementation detail
# from that library, so it could be anything
assert True, "Exception raised"
else:
raise AssertionError("Exception NOT raised")
def test_bytes_to_intel_hex():
"""Test the data to Intel Hex string conversion."""
data = [1, 2, 3, 4, 5]
expected_hex_str = "\n".join([":050000000102030405EC", INTEL_HEX_EOF])
result = cmds._bytes_to_intel_hex(data=data)
assert expected_hex_str == result
def test_bytes_to_intel_hex_io_error(mock_string_io, mock_stderr):
"""Test the exception handling when an IOError is encountered."""
data = [1, 2, 3, 4, 5]
mock_string_io.return_value.write.side_effect = IOError()
result = cmds._bytes_to_intel_hex(data=data)
assert result is None
assert mock_stderr.call_count == 1
def test_bytes_to_intel_hex_offset():
"""Test the data to Intel Hex string conversion with an offset."""
data = [1, 2, 3, 4, 5]
offset = 0x2000000
expected_hex_str = "\n".join(
[":020000040200F8", ":050000000102030405EC", INTEL_HEX_EOF])
result = cmds._bytes_to_intel_hex(data=data, offset=offset)
assert expected_hex_str == result