{
  "tests": [
    {
      "description": "set-merge: non-leaf merge field with ServerTimestamp",
      "comment": "If a field path is in a merge option, the value at that path\nreplaces the stored value, and ServerTimestamps inside that value become transforms\nas usual.",
      "set": {
        "docRefPath": "projects/projectID/databases/(default)/documents/C/d",
        "option": {
          "fields": [
            {
              "field": [
                "h"
              ]
            }
          ]
        },
        "jsonData": "{\"h\": {\"f\": 5, \"g\": \"ServerTimestamp\"}, \"e\": 7}",
        "request": {
          "database": "projects/projectID/databases/(default)",
          "writes": [
            {
              "update": {
                "name": "projects/projectID/databases/(default)/documents/C/d",
                "fields": {
                  "h": {
                    "mapValue": {
                      "fields": {
                        "f": {
                          "integerValue": "5"
                        }
                      }
                    }
                  }
                }
              },
              "updateMask": {
                "fieldPaths": [
                  "h"
                ]
              }
            },
            {
              "transform": {
                "document": "projects/projectID/databases/(default)/documents/C/d",
                "fieldTransforms": [
                  {
                    "fieldPath": "h.g",
                    "setToServerValue": "REQUEST_TIME"
                  }
                ]
              }
            }
          ]
        }
      }
    }
  ]
}