{
  "self": {
    "wxid": "wxid_fixture_self",
    "nickname": "测试账号",
    "accountRoot": "fixture-account"
  },
  "contacts": [
    {
      "m_nsUsrName": "group_regular@chatroom",
      "m_nsNickName": "产品测试群",
      "md5": "group-regular-md5",
      "type": "group",
      "avatar": "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mP8/x8AAusB9Y9ZQmcAAAAASUVORK5CYII="
    },
    {
      "m_nsUsrName": "group_folded@chatroom",
      "m_nsNickName": "折叠群聊样本",
      "md5": "group-folded-md5",
      "type": "group",
      "isFolded": true
    },
    {
      "m_nsUsrName": "filehelper",
      "m_nsNickName": "文件传输助手",
      "md5": "file-helper-md5",
      "type": "user"
    }
  ],
  "messages": {
    "group-regular-md5": [
      {
        "id": "msg-text",
        "from": "user",
        "type": "普通文本",
        "datetime": "2026-08-01 10:00:00",
        "content": "这是一条脱敏测试消息",
        "isSender": false,
        "name": "测试成员",
        "senderId": "wxid_fixture_member",
        "createTime": 1785549600,
        "contentData": { "type": "text", "content": "这是一条脱敏测试消息" }
      },
      {
        "id": "msg-image",
        "from": "user",
        "type": "图片",
        "datetime": "2026-08-01 10:01:00",
        "content": "[图片]",
        "isSender": false,
        "localId": 2,
        "createTime": 1785549660,
        "sessionId": "group_regular@chatroom",
        "contentData": { "type": "image", "md5": "fixture-image-md5", "datName": "fixture.dat" }
      },
      {
        "id": "msg-unknown",
        "from": "user",
        "type": "不支持的消息",
        "datetime": "2026-08-01 10:02:00",
        "content": "[未知消息]",
        "isSender": false,
        "createTime": 1785549720,
        "contentData": { "type": "unknown", "raw": "fixture-unknown" }
      }
    ],
    "file-helper-md5": [
      {
        "id": "msg-voice",
        "from": "user",
        "type": "语音",
        "datetime": "2026-08-01 11:00:00",
        "content": "[语音]",
        "isSender": false,
        "localId": 11,
        "createTime": 1785553200,
        "sessionId": "filehelper",
        "contentData": { "type": "voice", "duration": 1 }
      },
      {
        "id": "msg-forward",
        "from": "user",
        "type": "合并转发",
        "datetime": "2026-08-01 11:01:00",
        "content": "[合并转发]",
        "isSender": false,
        "createTime": 1785553260,
        "contentData": {
          "type": "forwardBundle",
          "title": "转发多条内容",
          "items": [
            { "messageType": 1, "sender": "测试成员", "sentAt": "11:00", "text": "脱敏转发内容" }
          ]
        }
      }
    ]
  }
}