{
  "data": [{
    "x": [1,2,3,4,5],
    "y": [1,2,3,4],
    "marker": {
      "color": [1,2,3,4],
      "cmin": 2,
      "cmax": 3,
      "showscale": true
    }
  }, {
    "x": [1,2,3,4,5],
    "y": [4,3,2,1],
    "marker": {
      "color": [1,2,3,4],
      "cmin": 1,
      "cmax": 4,
      "showscale": false
    }
  }],
  "layout": {
    "showlegend": false
  }
}

Add test for colorscale constraints
Add test for colorscale constraints
