{
  "expression": {
    "type": "interval",
    "property": "p",
    "stops": [[0, [0]], [1, [1]]],
    "default": [-1]
  },
  "propertySpec": {
    "type": "array",
    "value": "number",
    "length": 1,
    "property-type": "data-driven",
    "expression": {"interpolated": true, "parameters": ["zoom", "feature"]}
  },
  "inputs": [
    [{}, {"properties": {}}],
    [{}, {"properties": {"p": -1}}],
    [{}, {"properties": {"p": 0}}],
    [{}, {"properties": {"p": 0.5}}],
    [{}, {"properties": {"p": 1}}],
    [{}, {"properties": {"p": 2}}],
    [{}, {"properties": {"p": "0"}}]
  ],
  "expected": {
    "compiled": {
      "result": "success",
      "isFeatureConstant": false,
      "isZoomConstant": true,
      "type": "array<number, 1>"
    },
    "outputs": [[-1], [0], [0], [0], [1], [1], [-1]],
    "serialized": [
      "case",
      ["==", ["typeof", ["get", "p"]], "number"],
      ["step", ["number", ["get", "p"]], ["literal", [0]], 1, ["literal", [1]]],
      ["literal", [-1]]
    ]
  }
}