setup_test_env.sh

#!/bin/bash

# Setup script for CANSocket test environment
# This script creates virtual CAN interfaces needed for testing

set -e

echo "Setting up virtual CAN interfaces for testing..."

# Check if running as root or with sudo
if [ "$EUID" -ne 0 ]; then
    echo "This script requires root privileges. Please run with sudo."
    exit 1
fi

# Load vcan kernel module
echo "Loading vcan kernel module..."
if ! lsmod | grep -q vcan; then
    modprobe vcan
    echo "vcan module loaded successfully"
else
    echo "vcan module already loaded"
fi

# Function to create virtual CAN interface
create_vcan_interface() {
    local interface=$1
    
    # Check if interface already exists
    if ip link show "$interface" &>/dev/null; then
        echo "Interface $interface already exists"
        # Make sure it's up
        ip link set up "$interface"
    else
        echo "Creating virtual CAN interface: $interface"
        ip link add dev "$interface" type vcan
        ip link set up "$interface"
        echo "Interface $interface created and brought up"
    fi
}

# Create test interfaces
create_vcan_interface "vcan0"
create_vcan_interface "vcan1"

echo ""
echo "Virtual CAN interfaces setup complete!"
echo "Available CAN interfaces:"
ip link show | grep -E "(vcan|can)" || echo "No CAN interfaces found"

echo ""
echo "You can now run the tests with: ./build.sh"
echo "To remove the interfaces later, run: sudo ip link delete vcan0 && sudo ip link delete vcan1"