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tests/unit_tests/socket_can_com_tests/README.md

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+# Virtual CAN Interface Setup and Testing
+
+This guide explains how to set up virtual CAN interfaces (`vcan0` and `vcan1`) on a Linux system and how to run tests using these interfaces.
+
+## Prerequisites
+
+- A Linux system with `iproute2` and `can-utils` installed.
+- Root or sudo privileges.
+
+## Setup Virtual CAN Interfaces
+
+1. **Load the `vcan` kernel module:**
+
+    ```bash
+    sudo modprobe vcan
+    ```
+
+2. **Create the virtual CAN interfaces:**
+
+    ```bash
+    sudo ip link add dev vcan0 type vcan
+    sudo ip link add dev vcan1 type vcan
+    sudo ip link add dev vcan2 type vcan
+    sudo ip link add dev vcan3 type vcan
+    sudo ip link add dev vcan4 type vcan
+    ```
+
+3. **Bring the virtual CAN interfaces online:**
+
+    ```bash
+    sudo ip link set up vcan0
+    sudo ip link set up vcan1
+    sudo ip link set up vcan2
+    sudo ip link set up vcan3
+    sudo ip link set up vcan4
+    ```
+
+4. **Verify the virtual CAN interfaces:**
+
+    ```bash
+    ip addr | grep "vcan"
+    ```
+
+    You should see `vcan0` and `vcan1` listed as available interfaces.
+
+5. **Remove the virtual CAN interfaces:**
+ 
+    ```bash
+    sudo ip link set down vcan0
+    sudo ip link delete vcan0
+    ```
+
+## Running Tests
+
+1. **Listen for CAN messages on `vcan0`:**
+ 
+    ```bash
+    candump vcan0
+    ```
+ 
+2. **Send a CAN message on `vcan0` (from another terminal):**
+ 
+    ```bash
+    cansend vcan0 123#DEADBEEF
+    ```
+    You should see the message `123#DEADBEEF` appear on `vcan0`.
+
+## Explanation
+
+This setup uses virtual CAN interfaces (`vcan0` and `vcan1`) to simulate a CAN bus environment. This is useful for testing CAN applications without the need for physical CAN hardware.
+
+**After virtual can is ready uncomment this line `#add_subdirectory(manual_tests/socket_can_com_tests)` from `vapi-cpp-vehicle-api-platform/tests/CMakeLists.txt` and then reconfigure and build the project to run the tests.**
+
+## Additional Resources
+
+- SocketCAN Documentation
+- [can-utils GitHub Repository](https://github.com/linux-can/can-utils)