{
  "tests": [
    {
      "input": {
        "customer": {
          "firstName": "John",
          "lastName": "Doe",
          "age": 30
        },
        "order": {
          "id": "ORD-001",
          "total": 100
        }
      },
      "output": {
        "customer": {
          "firstName": "John",
          "lastName": "Doe",
          "age": 30,
          "fullName": "John Doe"
        },
        "order": {
          "id": "ORD-001",
          "total": 100
        }
      }
    },
    {
      "input": {
        "customer": {
          "firstName": "Jane",
          "lastName": "Smith",
          "age": 25
        },
        "order": {
          "id": "ORD-002",
          "total": 150
        }
      },
      "output": {
        "customer": {
          "firstName": "Jane",
          "lastName": "Smith",
          "age": 25,
          "fullName": "Jane Smith"
        },
        "order": {
          "id": "ORD-002",
          "total": 150
        }
      }
    }
  ],
  "nodes": [
    {
      "type": "inputNode",
      "id": "input-node",
      "name": "request",
      "position": {
        "x": 100,
        "y": 100
      }
    },
    {
      "type": "expressionNode",
      "id": "expression-node-1",
      "name": "customerFullName",
      "position": {
        "x": 300,
        "y": 100
      },
      "content": {
        "inputField": "customer",
        "outputPath": "customer",
        "expressions": [
          {
            "id": "07795ded-cb9b-4165-9b5e-783b066dda61",
            "key": "fullName",
            "value": "`${firstName} ${lastName}`"
          }
        ],
        "passThrough": true
      }
    }
  ],
  "edges": [
    {
      "id": "edge-1",
      "sourceId": "input-node",
      "targetId": "expression-node-1",
      "type": "edge"
    }
  ]
}