serverless/lib/plugins/create/templates/fn-nodejs/hello/test.json

{
  "tests": [
    {
      "input": {
        "body": {
          "name": "Johnny"
        }
      },
      "output": {
        "body": {
          "message": "Hello Johnny"
        }
      }
    },
    {
      "input": {
        "body": ""
      },
      "output": {
        "body": {
          "message": "Hello World"
        }
      }
    }
  ]
}