655e039aad
原实现是 Canvas 画笔画板，与「文字白板/记事本」需求不符。重做为纯文本实时协作： - model：strokes JSON -> content TEXT + version INT（乐观锁）+ edit_count； schema/dao/service 同步重构，append_stroke/replace_strokes -> update_content。 - WS 协议：stroke -> edit（发完整文本，debounce 400ms）；init 下发 content/version。 update 帧广播给他人，cleared 广播给所有人。 - 前端：canvas -> textarea；收到远端 update 用最长公共前后缀算变更区间， 仅替换该区间并保留光标（区间前不动/后平移/内移末尾）；清空/复制文本按钮。 - schema.sql 更新 whiteboard 表 DDL；DB 旧表 DROP 重建（开发环境）。 - 测试脚本与 README 同步更新。
93 lines
3.5 KiB
Python
93 lines
3.5 KiB
Python
"""白板 WebSocket 端到端烟测（文本记事本）：两客户端实时同步 + 心跳 + 清空。
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验证：
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1. 客户端 A 连入 -> 收到 init（含 content/version）
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2. 客户端 B 连入 -> 收到 init
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3. A 编辑文本 -> B 收到 update（A 不收自己的）
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4. 心跳 ping -> pong
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5. A 清空 -> A、B 都收到 cleared
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6. 持久化：重连后 init 应返回清空后的内容
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7. edit_count 累计
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"""
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from __future__ import annotations
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import asyncio
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import json
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import urllib.request
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import websockets
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BASE_WS = "ws://127.0.0.1:6867/ws/wb"
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BOARD = "e2etest"
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async def recv_msg(ws, timeout=2.0) -> dict | None:
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try:
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raw = await asyncio.wait_for(ws.recv(), timeout=timeout)
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return json.loads(raw)
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except asyncio.TimeoutError:
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return None
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async def main() -> None:
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async with websockets.connect(f"{BASE_WS}/{BOARD}") as a, \
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websockets.connect(f"{BASE_WS}/{BOARD}") as b:
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await a.send(json.dumps({"type": "hello", "client_id": "A"}))
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await b.send(json.dumps({"type": "hello", "client_id": "B"}))
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init_a = await recv_msg(a)
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init_b = await recv_msg(b)
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print("A init:", init_a.get("type") if init_a else None)
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print("B init:", init_b.get("type") if init_b else None)
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assert init_a and init_a["type"] == "init"
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assert init_b and init_b["type"] == "init"
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# A 编辑文本
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text = "Hello, this is a shared note.\nSecond line."
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await a.send(json.dumps({"type": "edit", "content": text}))
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# A 不应收到自己的 update
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echo = await recv_msg(a, timeout=1.0)
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print("A self-echo (expect None):", echo)
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assert echo is None, "发送者不应收到自己的 update"
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# B 应收到 update
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got = await recv_msg(b)
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print("B recv:", got.get("type") if got else None, "content=", repr(got.get("content")) if got else None)
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assert got and got["type"] == "update" and got["client_id"] == "A"
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assert got["content"] == text
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# 心跳
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await a.send(json.dumps({"type": "ping"}))
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pong = await recv_msg(a)
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print("A pong:", pong.get("type") if pong else None)
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assert pong and pong["type"] == "pong"
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# 清空 -> 两端都收 cleared
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await b.send(json.dumps({"type": "clear"}))
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cleared_b = await recv_msg(b)
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cleared_a = await recv_msg(a)
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print("B cleared:", cleared_b.get("type") if cleared_b else None,
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"A cleared:", cleared_a.get("type") if cleared_a else None)
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assert cleared_b and cleared_b["type"] == "cleared" and cleared_b["client_id"] == "B"
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assert cleared_a and cleared_a["type"] == "cleared" and cleared_a["client_id"] == "B"
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# 验证持久化：重连后 init 应 content 为空（已清空）
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async with websockets.connect(f"{BASE_WS}/{BOARD}") as c:
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await c.send(json.dumps({"type": "hello", "client_id": "C"}))
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init_c = await recv_msg(c)
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print("C init after clear, content=", repr(init_c.get("content")) if init_c else None)
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assert init_c and init_c["type"] == "init"
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assert init_c["content"] == "", "清空后重连应得到空 content"
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# 验证 edit_count 累计（1 次编辑 + 1 次清空 = 2）
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with urllib.request.urlopen(f"http://127.0.0.1:6867/api/wb/{BOARD}") as r:
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meta = json.load(r)
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print("edit_count after ops:", meta["edit_count"])
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assert meta["edit_count"] == 2, "1 编辑 + 1 清空 = 2 次"
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print("\nWS 端到端全部通过 ✅")
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if __name__ == "__main__":
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asyncio.run(main())
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