{
  "_scenario": "self-loop",
  "expected_bindings": {
    "columns": [
      "x"
    ],
    "rows": [
      [
        {
          "str": "node:2"
        }
      ],
      [
        {
          "str": "node:3"
        }
      ]
    ]
  },
  "facts": {
    "edge": [
      [
        {
          "str": "node:1"
        },
        {
          "str": "node:2"
        },
        {
          "str": "edge:1"
        }
      ],
      [
        {
          "str": "node:2"
        },
        {
          "str": "node:2"
        },
        {
          "str": "edge:2"
        }
      ],
      [
        {
          "str": "node:3"
        },
        {
          "str": "node:3"
        },
        {
          "str": "edge:3"
        }
      ]
    ]
  },
  "query": {
    "nodes": [
      {
        "action": {
          "scan": {
            "columns": [
              {
                "var": "x"
              },
              {
                "var": "x"
              },
              {
                "var": "_w0_2"
              }
            ],
            "table": "edge"
          }
        },
        "id": 1
      }
    ],
    "root": 1
  },
  "schema": {
    "edge": 3
  }
}