Added check if is Hardhat functional

.github/workflows/system-tests.yml

@@ -31,15 +31,22 @@ jobs:
           while [[ -z $(lsof -i :8545 -t) ]]; do echo "Waiting for port 8545 to be open..."; sleep 10; done
           sleep 60
 
-      # Temporary solution
-      - name: Verify Hardhat Node is Running
+      # Verify Hardhat Node is Running and Functional
+      - name: Verify Hardhat Node is Running and Functional
         working-directory: ./solidity
         run: |
           if [[ -z $(lsof -i :8545 -t) ]]; then
             echo "Hardhat node is not running on port 8545, exiting..."
             exit 1
           else
-            echo "Hardhat node is running, proceeding to deploy contracts."
+            echo "Hardhat node is running, verifying its functionality..."
+            chainId=$(curl -s -X POST --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}' http://127.0.0.1:8545 | jq -r '.result')
+            if [[ ! -z "$chainId" ]]; then
+              echo "Hardhat node is functional. Chain ID is $chainId."
+            else
+              echo "Hardhat node is running but not functional, exiting..."
+              exit 1
+            fi
           fi
 
       - name: Deploy contracts