| 1 | """FastAPI 服务测试：验证 job 生命周期与 HTTP 接口。 |
| 2 | |
| 3 | 仅测试 HTTP 层 + JobManager 抽象；不触达真实 Douyin API。 |
| 4 | """ |
| 5 | |
| 6 | import asyncio |
| 7 | from typing import Dict |
| 8 | |
| 9 | import pytest |
| 10 | |
| 11 | try: |
| 12 | from fastapi.testclient import TestClient # type: ignore |
| 13 | except ImportError: # pragma: no cover |
| 14 | pytest.skip("fastapi not installed", allow_module_level=True) |
| 15 | |
| 16 | |
| 17 | from config import ConfigLoader |
| 18 | from server.app import build_app |
| 19 | from server.jobs import JobManager |
| 20 | |
| 21 | |
| 22 | @pytest.mark.asyncio |
| 23 | async def test_job_manager_runs_executor(tmp_path): |
| 24 | async def fake_executor(url: str) -> Dict[str, int]: |
| 25 | return {"total": 1, "success": 1, "failed": 0, "skipped": 0} |
| 26 | |
| 27 | manager = JobManager(executor=fake_executor, max_concurrency=2) |
| 28 | job = await manager.submit("https://example/one") |
| 29 | assert job.status == "pending" |
| 30 | |
| 31 | # 等待后台任务跑完 |
| 32 | await asyncio.wait_for(job._task, timeout=2.0) |
| 33 | fetched = await manager.get(job.job_id) |
| 34 | assert fetched is not None |
| 35 | assert fetched.status == "success" |
| 36 | assert fetched.success == 1 |
| 37 | |
| 38 | |
| 39 | @pytest.mark.asyncio |
| 40 | async def test_job_manager_marks_failure_on_executor_error(tmp_path): |
| 41 | async def boom(url: str) -> Dict[str, int]: |
| 42 | raise RuntimeError("bad url") |
| 43 | |
| 44 | manager = JobManager(executor=boom) |
| 45 | job = await manager.submit("x") |
| 46 | await asyncio.wait_for(job._task, timeout=2.0) |
| 47 | fetched = await manager.get(job.job_id) |
| 48 | assert fetched is not None |
| 49 | assert fetched.status == "failed" |
| 50 | assert fetched.error is not None |
| 51 | assert "bad url" in fetched.error |
| 52 | |
| 53 | |
| 54 | def test_health_endpoint(tmp_path): |
| 55 | config = ConfigLoader(None) |
| 56 | config.update(path=str(tmp_path)) |
| 57 | app = build_app(config) |
| 58 | |
| 59 | with TestClient(app) as client: |
| 60 | resp = client.get("/api/v1/health") |
| 61 | assert resp.status_code == 200 |
| 62 | assert resp.json() == {"status": "ok"} |
| 63 | |
| 64 | |
| 65 | def test_download_endpoint_creates_job(tmp_path, monkeypatch): |
| 66 | config = ConfigLoader(None) |
| 67 | config.update(path=str(tmp_path)) |
| 68 | app = build_app(config) |
| 69 | |
| 70 | # 替换 job executor 为 fake（不去触达 Douyin） |
| 71 | async def fake_executor(url: str) -> Dict[str, int]: |
| 72 | return {"total": 0, "success": 0, "failed": 0, "skipped": 0} |
| 73 | |
| 74 | app.state.job_manager.executor = fake_executor |
| 75 | |
| 76 | with TestClient(app) as client: |
| 77 | resp = client.post("/api/v1/download", json={"url": "https://www.douyin.com/video/123"}) |
| 78 | assert resp.status_code == 200 |
| 79 | data = resp.json() |
| 80 | assert data["status"] in ("pending", "running", "success") |
| 81 | assert data["url"] == "https://www.douyin.com/video/123" |
| 82 | assert len(data["job_id"]) > 0 |
| 83 | |
| 84 | job_id = data["job_id"] |
| 85 | # job 列表应包含该 id |
| 86 | list_resp = client.get("/api/v1/jobs") |
| 87 | assert list_resp.status_code == 200 |
| 88 | ids = [j["job_id"] for j in list_resp.json()["jobs"]] |
| 89 | assert job_id in ids |
| 90 | |
| 91 | # 详情接口 |
| 92 | detail = client.get(f"/api/v1/jobs/{job_id}") |
| 93 | assert detail.status_code == 200 |
| 94 | assert detail.json()["job_id"] == job_id |
| 95 | |
| 96 | |
| 97 | def test_download_endpoint_rejects_empty_url(tmp_path): |
| 98 | config = ConfigLoader(None) |
| 99 | config.update(path=str(tmp_path)) |
| 100 | app = build_app(config) |
| 101 | with TestClient(app) as client: |
| 102 | resp = client.post("/api/v1/download", json={"url": ""}) |
| 103 | assert resp.status_code == 400 |
| 104 | |
| 105 | |
| 106 | def test_get_unknown_job_returns_404(tmp_path): |
| 107 | config = ConfigLoader(None) |
| 108 | config.update(path=str(tmp_path)) |
| 109 | app = build_app(config) |
| 110 | with TestClient(app) as client: |
| 111 | resp = client.get("/api/v1/jobs/unknown-id") |
| 112 | assert resp.status_code == 404 |
| 113 | |
| 114 | |
| 115 | def test_build_app_shares_deps_across_requests(tmp_path): |
| 116 | """重请求应复用同一个 FileManager / RateLimiter 等（避免每次重建）。""" |
| 117 | config = ConfigLoader(None) |
| 118 | config.update(path=str(tmp_path)) |
| 119 | app = build_app(config) |
| 120 | |
| 121 | deps = app.state.deps |
| 122 | assert deps.file_manager is not None |
| 123 | assert deps.rate_limiter is not None |
| 124 | assert deps.retry_handler is not None |
| 125 | assert deps.queue_manager is not None |
| 126 | assert deps.cookie_manager is not None |
| 127 | |
| 128 | # 构建第二次 app 时应该是完全独立的 deps 实例，但同一 app 内是共享的 |
| 129 | app2 = build_app(config) |
| 130 | assert app2.state.deps is not app.state.deps |
| 131 | assert app.state.deps.file_manager is app.state.deps.file_manager # identity |
| 132 | |
| 133 | |
| 134 | @pytest.mark.asyncio |
| 135 | async def test_job_manager_prunes_by_max_jobs(): |
| 136 | """max_jobs 超限时应优先淘汰最老的终态 job，保留 in-flight。""" |
| 137 | |
| 138 | async def fast_executor(url: str) -> Dict[str, int]: |
| 139 | return {"total": 0, "success": 0, "failed": 0, "skipped": 0} |
| 140 | |
| 141 | manager = JobManager(executor=fast_executor, max_jobs=3, job_ttl_seconds=0.0) |
| 142 | jobs = [] |
| 143 | for i in range(5): |
| 144 | j = await manager.submit(f"u{i}") |
| 145 | jobs.append(j) |
| 146 | await asyncio.wait_for(j._task, timeout=1.0) |
| 147 | |
| 148 | remaining = await manager.list_jobs() |
| 149 | # max_jobs=3：新任务 submit 时先剪裁，最终存量 ≤ max_jobs |
| 150 | assert len(remaining) <= 3 |
| 151 | # 最新的那一批一定在，最早的那几个被淘汰 |
| 152 | ids_remaining = {j.job_id for j in remaining} |
| 153 | assert jobs[-1].job_id in ids_remaining |
| 154 | |
| 155 | |
| 156 | @pytest.mark.asyncio |
| 157 | async def test_job_manager_prunes_by_ttl(): |
| 158 | """TTL 过期的终态 job 应在下次 submit 时被清理。""" |
| 159 | |
| 160 | async def fast_executor(url: str) -> Dict[str, int]: |
| 161 | return {"total": 0, "success": 0, "failed": 0, "skipped": 0} |
| 162 | |
| 163 | manager = JobManager(executor=fast_executor, max_jobs=100, job_ttl_seconds=0.01) |
| 164 | old_job = await manager.submit("old") |
| 165 | await asyncio.wait_for(old_job._task, timeout=1.0) |
| 166 | |
| 167 | # 等 TTL 过期 |
| 168 | await asyncio.sleep(0.05) |
| 169 | |
| 170 | new_job = await manager.submit("new") |
| 171 | await asyncio.wait_for(new_job._task, timeout=1.0) |
| 172 | |
| 173 | remaining_ids = {j.job_id for j in await manager.list_jobs()} |
| 174 | assert old_job.job_id not in remaining_ids |
| 175 | assert new_job.job_id in remaining_ids |
| 176 |