jbjf6666
85e9a53750
docs/WINDOWS_PORT.md 覆盖： - 逐文件可移植性审计（核心逻辑层约 90% 可直接复用） - 核心难点：iOS 17+ 的 RSD 隧道无法在 Windows 复用（macOS 实现依赖 XPC + ObjC runtime 私有框架），改用 pymobiledevice3 的 userspace 隧道 - 已实测确认的命令与 API（--userspace 挂在 lockdown start-tunnel / mounter auto-mount 上，remote start-tunnel 不支持；类名是 UserspaceRsdTunnel） - 窗口启动、数据目录、打包与分发（DMG → Inno Setup）、图标（.icns → .ico） - macOS 侧踩过的坑：镜像挂载用 Python API、必须打包包元数据、不要把 distutils 放进 excludes、AlreadyMountedError 当成功处理 - 设计约束（DVT 长连接、只能改经纬度、last_point 与 last_reported 分离等） - 验收基线（复用现有测试套件）与建议的工作顺序
111 lines
4.1 KiB
Python
111 lines
4.1 KiB
Python
#!/usr/bin/env python3
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"""瓦片离线可用验证：回源成功后断网，验证缓存仍能供图。
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做法：用真实的 core.tilecache.TileCache，先把 urllib 换成"永远失败"的实现（模拟断网），
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再请求已经缓存过的瓦片，断言仍然返回 200 + 合法图片；同时断言未缓存过的瓦片会优雅降级
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（返回占位图 + status != 200，由上层回 404 让前端走重试）。
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运行：./.venv/bin/python tests/offline_tiles.py
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"""
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from __future__ import annotations
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import sys
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import time
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import urllib.request
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from pathlib import Path
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ROOT = Path(__file__).resolve().parent.parent
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sys.path.insert(0, str(ROOT))
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from core import config_store, tilecache # noqa: E402
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PASS = 0
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FAIL = 0
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FAILURES: list[str] = []
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def check(name: str, ok: bool, detail: str = "") -> None:
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global PASS, FAIL
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if ok:
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PASS += 1
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print(f" \033[32m✓\033[0m {name}")
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else:
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FAIL += 1
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FAILURES.append(f"{name} {detail}")
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print(f" \033[31m✗\033[0m {name} {detail}")
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def main() -> int:
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print("\033[1m瓦片本地缓存 / 离线可用验证\033[0m")
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cache_dir = Path("/tmp/iosloc-offline-tiles")
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import shutil
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shutil.rmtree(cache_dir, ignore_errors=True)
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source_key = "amap"
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source = config_store.DEFAULT_TILE_SOURCES[source_key]
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# 北京天安门附近、z12 —— 本机实测可达
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z, x, y = 12, 3367, 1580
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cache = tilecache.TileCache(cache_dir, max_mb=64)
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print("\n1) 联网回源并落盘")
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online = cache.get_tile(source_key, source, z, x, y)
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check("回源返回真实图片", online.status == 200 and online.body[:4] in (b"\x89PNG", b"\xff\xd8"),
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f"status={online.status} source={online.source}")
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check("标记为 network", online.source == "network", online.source)
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check("已写入磁盘缓存", any(cache_dir.rglob("*")), "缓存目录为空")
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print("\n2) 断网（把 urllib 换成永远失败）后请求同一瓦片")
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real_urlopen = urllib.request.urlopen
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def offline(*_args, **_kwargs):
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raise OSError("模拟断网：Network is unreachable")
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urllib.request.urlopen = offline
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try:
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cached = cache.get_tile(source_key, source, z, x, y)
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check("离线仍返回 200", cached.status == 200, f"status={cached.status}")
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check("来源为 cache", cached.source == "cache", cached.source)
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check("图片内容与联网时一致", cached.body == online.body,
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f"{len(cached.body)}B vs {len(online.body)}B")
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print("\n3) 断网 + 未缓存瓦片 → 优雅降级（不抛异常）")
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t0 = time.time()
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miss = cache.get_tile(source_key, source, z, x, y + 1)
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elapsed = time.time() - t0
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check("未命中不抛异常", True, "")
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check("返回占位图且 status!=200（上层回 404 让前端重试）",
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miss.status != 200 and miss.body[:4] == b"\x89PNG",
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f"status={miss.status} source={miss.source}")
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check("失败快速返回（<5s）", elapsed < 5.0, f"{elapsed:.2f}s")
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print("\n4) 缓存统计")
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stats = cache.stats
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check("命中计数增加", stats["hit"] >= 1, str(stats))
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check("统计到离线失败", stats["failed"] >= 1, str(stats))
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finally:
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urllib.request.urlopen = real_urlopen
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print("\n5) 恢复网络后仍可正常回源")
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cache2 = tilecache.TileCache(cache_dir, max_mb=64)
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other = cache2.get_tile(source_key, source, z, x + 1, y)
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check("恢复后回源成功", other.status == 200 and other.body[:4] in (b"\x89PNG", b"\xff\xd8"),
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f"status={other.status} source={other.source}")
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print("\n6) 容量上限淘汰不破坏可用性")
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small = tilecache.TileCache(cache_dir, max_mb=1)
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small._sweep()
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check("淘汰后仍能读取", small.get_tile(source_key, source, z, x, y).status in (200, 404))
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shutil.rmtree(cache_dir, ignore_errors=True)
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print(f"\n{'=' * 56}")
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print(f"通过 \033[32m{PASS}\033[0m 项，失败 \033[31m{FAIL}\033[0m 项")
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for item in FAILURES:
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print(" -", item)
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return 0 if FAIL == 0 else 1
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if __name__ == "__main__":
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raise SystemExit(main())
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