{
  "version": 8,
  "sources": {
    "point": {
      "type": "geojson",
      "data": {
        "type": "FeatureCollection",
        "features": [
          {
            "type": "Feature",
            "properties": {
              "font-scale-override": 2.0,
              "text-font-override": ["Arial"]
            },
            "geometry": {
              "type": "Point",
              "coordinates": [ 0, 0 ]
            }
          }
        ]
      }
    }
  },
  "glyphs": "local://glyphs/{fontstack}/{range}.pbf",
  "layers": [
    {
      "id": "no options - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text"
        ]
      }
    },
    {
      "id": "empty options - invalid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          {}
        ]
      }
    },
    {
      "id": "no parameters - invalid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format"
        ]
      }
    },
    {
      "id": "empty options - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          {}
        ]
      }
    },
    {
      "id": "font-scale option float literal - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "font-scale": 1.5 }
        ]
      }
    },
    {
      "id": "font-scale option expression - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "font-scale": ["get", "font-scale-override"] }
        ]
      }
    },
    {
      "id": "font-scale option invalid expression type - invalid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "font-scale": ["string", 3.0] }
        ]
      }
    },
    {
      "id": "text-font option array - invalid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "text-font": ["Helvetica"] }
        ]
      }
    },
    {
      "id": "text-font option literal coercion - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "text-font": ["literal", ["Helvetica"]] }
        ]
      }
    },
    {
      "id": "text-font option expression - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "text-font": ["get", "text-font-override"] }
        ]
      }
    },
    {
      "id": "text-font option invalid expression type - invalid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "text-font": ["number", ["get", "font-scale-override"]] }
        ]
      }
    },
    {
      "id": "text-font option array expression - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          { "text-font": ["array", "string", ["literal", ["Helvetica"]]] }
        ]
      }
    },
    {
      "id": "text-font option and font-scale option combined - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          "some text",
          {
            "text-font": ["literal", ["Helvetica"]],
            "font-scale": 1.5
          }
        ]
      }
    },
    {
      "id": "image section with empty options - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          ["image", "image-name"],
          {}
        ]
      }
    },
    {
      "id": "image section with no options - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          ["image", "image-name"]
        ]
      }
    },
    {
      "id": "mixed sections with options - valid",
      "type": "symbol",
      "source": "point",
      "layout": {
        "text-field": [
          "format",
          ["image", "image-name"],
          "some text",
          {
            "text-font": ["literal", ["Helvetica"]],
            "font-scale": 1.5
          },
          "\n",
          ["image", "another-image"]
        ]
      }
    }
  ]
}