Hands-On: Complete ECU-TEST Project

#!/bin/bash
# Create complete ECU test project structure
mkdir -p ecu_test_project/{tests,test_data,reports,lib}

cat > ecu_test_project/tests/conftest.py << PYEOF
import pytest
from lib.ecu_interface import MockEcuInterface

def pytest_addoption(parser):
    parser.addoption("--can-channel", default="mock")
    parser.addoption("--dbc", default="vehicle.dbc")

@pytest.fixture(scope="session")
def ecu(request):
    channel = request.config.getoption("--can-channel")
    if channel == "mock":
        return MockEcuInterface()
    from lib.ecu_interface import CanEcuInterface
    return CanEcuInterface(channel, request.config.getoption("--dbc"))
PYEOF

cat > ecu_test_project/lib/ecu_interface.py << PYEOF
class MockEcuInterface:
    def __init__(self):
        self._signals = {}
    def send_signal(self, name, value):
        self._signals[name] = value
        self._update_model()
    def read_signal(self, name, timeout_s=1.0):
        return self._signals.get(name)
    def _update_model(self):
        speed = self._signals.get("VehicleSpeed", 0)
        dist  = self._signals.get("RadarTarget_Distance", 999)
        ttc   = dist / max(speed / 3.6, 0.001)
        if speed < 10 or dist > 80:
            self._signals["AEB_State"] = "INACTIVE"
            self._signals["AEB_BrakeRequest_pct"] = 0
        elif ttc < 2.5:
            brake = min(100, int(100 * (2.5 - ttc) / 2.5))
            self._signals["AEB_State"] = "ACTIVE"
            self._signals["AEB_BrakeRequest_pct"] = brake
PYEOF
echo "Project structure created"