mindspore/tests/ut/data/dataset/testSchema.json

{
  "datasetType": "TF",
  "columns": {
    "image": {
      "type": "uint8",
      "rank": 3,
      "shape": [3, 4, 2]
    },
    "label" : {
      "type": "int32",
      "rank": 1
    }
  }
}