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# -*- coding: utf-8 -*-
import io
import json
import pytest
import canmatrix.canmatrix
import canmatrix.formats
@pytest.fixture
def default_matrix():
matrix = canmatrix.canmatrix.CanMatrix()
some_define = canmatrix.Define("INT 0 65535")
matrix.add_value_table("Options", {0: "North", 1: "South", 2: "East", 3: "West"})
frame = canmatrix.canmatrix.Frame(name="test_frame", arbitration_id=10)
frame.add_attribute("my_attribute1", "my_value1")
signal = canmatrix.canmatrix.Signal(name="test_signal", size=8)
signal.add_values(0xFF, "Init")
signal.add_attribute("my_attribute2", "my_value2")
frame.add_signal(signal)
signal = canmatrix.canmatrix.Signal(name="multi", multiplex=True, size=3, unit="attosecond")
frame.add_signal(signal)
matrix.add_frame(frame)
matrix.frame_defines["my_attribute1"] = some_define
matrix.signal_defines["my_attribute2"] = some_define
return matrix
def test_export_with_jsonall(default_matrix):
"""Check the jsonExportAll doesn't raise and export some additional field."""
matrix = default_matrix
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", jsonExportAll=True)
data = out_file.getvalue().decode("utf-8")
assert "my_value1" in data
assert "my_value2" in data
assert "enumerations" in data
assert "North" in data
def test_export_additional_frame_info(default_matrix):
matrix = default_matrix
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", additionalFrameAttributes="my_attribute1")
data = out_file.getvalue().decode("utf-8")
assert "my_value1" in data
def test_export_long_signal_names():
matrix = canmatrix.canmatrix.CanMatrix()
frame = canmatrix.canmatrix.Frame(name="test_frame", arbitration_id=10)
matrix.add_frame(frame)
long_signal_name = "FAILURE_ZELL_UNTERTEMPERATUR_ENTLADEN_ALARM_IDX_01"
assert len(long_signal_name) > 32
signal = canmatrix.canmatrix.Signal(name=long_signal_name, size=8)
frame.add_signal(signal)
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", jsonExportAll=True)
data = json.loads(out_file.getvalue().decode("utf-8"))
assert data['messages'][0]['signals'][0]['name'] == long_signal_name
def test_export_min_max():
matrix = canmatrix.canmatrix.CanMatrix()
frame = canmatrix.canmatrix.Frame(name="test_frame", size=6, arbitration_id=10)
signal = canmatrix.Signal(name="someSigName", size=40, min=-5, max=42)
frame.add_signal(signal)
matrix.add_frame(frame)
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", jsonExportAll=True)
data = json.loads(out_file.getvalue().decode("utf-8"))
assert(data['messages'][0]['signals'][0]['min'] == '-5')
assert(data['messages'][0]['signals'][0]['max'] == '42')
def test_import_min_max():
json_input = """{
"messages": [
{
"attributes": {},
"comment": "",
"id": 10,
"is_extended_frame": false,
"is_fd": false,
"length": 6,
"name": "test_frame",
"signals": [
{
"attributes": {},
"bit_length": 40,
"comment": null,
"factor": "1",
"is_big_endian": false,
"is_float": false,
"is_signed": true,
"max": "42",
"min": "-5",
"name": "someSigName",
"offset": "0",
"start_bit": 0,
"values": {}
}
]
}
]
}"""
matrix = canmatrix.formats.loads_flat(json_input, "json", jsonExportAll=True)
assert matrix.frames[0].signals[0].min == -5
assert matrix.frames[0].signals[0].max == 42
def test_import_native():
json_input = """{
"messages": [
{
"attributes": {},
"comment": "",
"id": 10,
"is_extended_frame": false,
"is_fd": false,
"length": 6,
"name": "test_frame",
"signals": [
{
"attributes": {},
"bit_length": 40,
"comment": null,
"factor": 0.123,
"is_big_endian": false,
"is_float": false,
"is_signed": true,
"max": 42,
"min": -4.2,
"name": "someSigName",
"offset": 1,
"start_bit": 0,
"values": {}
}
]
}
]
}"""
matrix = canmatrix.formats.loads_flat(json_input, "json", jsonExportAll=True)
assert matrix.frames[0].signals[0].min == -4.2
assert matrix.frames[0].signals[0].max == 42
assert matrix.frames[0].signals[0].factor == 0.123
assert matrix.frames[0].signals[0].offset == 1
def test_import_export_enums():
json_input = """{
"enumerations": {
"Options": {
"0": "North",
"1": "East",
"2": "South",
"3": "West"
}
},
"messages": [
{
"attributes": {},
"comment": "",
"id": 10,
"is_extended_frame": false,
"is_fd": false,
"length": 6,
"name": "test_frame",
"signals": [
{
"attributes": {},
"name": "someSigName",
"bit_length": 40,
"is_signed": true,
"start_bit": 0
}
]
}
]
}"""
matrix = canmatrix.formats.loads_flat(json_input, "json")
assert matrix.value_tables == {"Options": {0: "North", 1: "East", 2: "South", 3: "West"}}
f_out = io.BytesIO()
canmatrix.formats.json.dump(matrix, f_out, jsonExportAll=True)
f_in = io.BytesIO(f_out.getvalue())
new_matrix = canmatrix.formats.json.load(f_in)
assert new_matrix.value_tables == {"Options": {"0": "North", "1": "East", "2": "South", "3": "West"}}
def test_export_native():
matrix = canmatrix.canmatrix.CanMatrix()
frame = canmatrix.canmatrix.Frame(name="test_frame", size=6, arbitration_id=10)
signal = canmatrix.Signal(name="test_sig", size=40, is_float=True, min="-4.2", max=42, factor="0.123", offset=1)
frame.add_signal(signal)
matrix.add_frame(frame)
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", jsonNativeTypes=True)
data = json.loads(out_file.getvalue().decode("utf-8"))
assert (data['messages'][0]['signals'][0]['factor'] == 0.123)
assert (data['messages'][0]['signals'][0]['offset'] == 1)
def test_export_all_native():
matrix = canmatrix.canmatrix.CanMatrix()
frame = canmatrix.canmatrix.Frame(name="test_frame", size=6, arbitration_id=10)
signal = canmatrix.Signal(name="test_sig", size=40, is_float=True, min="-4.2", max=42, factor="0.123", offset=1)
frame.add_signal(signal)
matrix.add_frame(frame)
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json", jsonExportAll=True, jsonNativeTypes=True)
data = json.loads(out_file.getvalue().decode("utf-8"))
assert (data['messages'][0]['signals'][0]['min'] == -4.2)
assert (data['messages'][0]['signals'][0]['max'] == 42)
assert (data['messages'][0]['signals'][0]['factor'] == 0.123)
assert (data['messages'][0]['signals'][0]['offset'] == 1)
assert (data['messages'][0]['is_fd'] is False)
def test_export_extended():
matrix = canmatrix.canmatrix.CanMatrix()
frame = canmatrix.canmatrix.Frame(name="test_frame", size=6, arbitration_id=canmatrix.canmatrix.ArbitrationId(extended=True, id=10))
frame.pgn=22
signal = canmatrix.Signal(name="someSigName", size=40)
frame.add_signal(signal)
matrix.add_frame(frame)
out_file = io.BytesIO()
canmatrix.formats.dump(matrix, out_file, "json")
# data = json.loads(out_file.getvalue().decode("utf-8"))
matrix = canmatrix.formats.loads_flat(out_file.getvalue().decode("utf-8"), "json", jsonExportAll=True)
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