{
  "tests": [
    {
      "description": "listen: TargetChange_ADD is an error if it has a different target ID",
      "comment": "A TargetChange_ADD response must have the same watch target ID.",
      "listen": {
        "responses": [
          {
            "documentChange": {
              "document": {
                "name": "projects/projectID/databases/(default)/documents/C/d1",
                "fields": {
                  "a": {
                    "integerValue": "3"
                  }
                },
                "createTime": "1970-01-01T00:00:01Z",
                "updateTime": "1970-01-01T00:00:01Z"
              },
              "targetIds": [
                1
              ]
            }
          },
          {
            "targetChange": {
              "targetChangeType": "CURRENT"
            }
          },
          {
            "targetChange": {
              "targetChangeType": "ADD",
              "targetIds": [
                2
              ],
              "readTime": "1970-01-01T00:00:02Z"
            }
          },
          {
            "targetChange": {
              "readTime": "1970-01-01T00:00:01Z"
            }
          }
        ],
        "isError": true
      }
    }
  ]
}