{
  "expression": ["boolean", ["get", "x"]],
  "inputs": [
    [{}, {}],
    [{}, {"properties": {"x": true}}],
    [{}, {"properties": {"x": false}}],
    [{}, {"properties": {"x": ""}}],
    [{}, {"properties": {"x": "false"}}],
    [{}, {"properties": {"x": 0}}],
    [{}, {"properties": {"x": 1}}],
    [{}, {"properties": {"x": null}}]
  ],
  "expected": {
    "compiled": {
      "result": "success",
      "isFeatureConstant": false,
      "isZoomConstant": true,
      "type": "boolean"
    },
    "outputs": [
      {
        "error": "Expected value to be of type boolean, but found null instead."
      },
      true,
      false,
      {
        "error": "Expected value to be of type boolean, but found string instead."
      },
      {
        "error": "Expected value to be of type boolean, but found string instead."
      },
      {
        "error": "Expected value to be of type boolean, but found number instead."
      },
      {
        "error": "Expected value to be of type boolean, but found number instead."
      },
      {"error": "Expected value to be of type boolean, but found null instead."}
    ],
    "serialized": ["boolean", ["get", "x"]]
  }
}