{
  "tests": [
    {
      "description": "listen: add a doc",
      "comment": "Snapshot with a single document.",
      "listen": {
        "responses": [
          {
            "documentChange": {
              "document": {
                "name": "projects/projectID/databases/(default)/documents/C/d1",
                "fields": {
                  "a": {
                    "integerValue": "1"
                  }
                },
                "createTime": "1970-01-01T00:00:01Z",
                "updateTime": "1970-01-01T00:00:01Z"
              },
              "targetIds": [
                1
              ]
            }
          },
          {
            "targetChange": {
              "targetChangeType": "CURRENT"
            }
          },
          {
            "targetChange": {
              "readTime": "1970-01-01T00:00:02Z"
            }
          }
        ],
        "snapshots": [
          {
            "docs": [
              {
                "name": "projects/projectID/databases/(default)/documents/C/d1",
                "fields": {
                  "a": {
                    "integerValue": "1"
                  }
                },
                "createTime": "1970-01-01T00:00:01Z",
                "updateTime": "1970-01-01T00:00:01Z"
              }
            ],
            "changes": [
              {
                "kind": "ADDED",
                "doc": {
                  "name": "projects/projectID/databases/(default)/documents/C/d1",
                  "fields": {
                    "a": {
                      "integerValue": "1"
                    }
                  },
                  "createTime": "1970-01-01T00:00:01Z",
                  "updateTime": "1970-01-01T00:00:01Z"
                },
                "oldIndex": -1
              }
            ],
            "readTime": "1970-01-01T00:00:02Z"
          }
        ]
      }
    }
  ]
}