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539 lines
19 KiB
Python
539 lines
19 KiB
Python
"""查重上传接口错误处理单元测试。
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验证 PR#82 修复：
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1. 内部异常信息不泄露给客户端（P1 安全修复）
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2. MIME 类型验证（P0 已修复）
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3. 文件大小限制（P0 已修复）
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4. 各种错误场景返回正确的 HTTP 状态码和安全的错误消息
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覆盖端点：POST /upload（查重上传）
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使用 FastAPI TestClient + dependency_overrides 模式，
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导入真实模块，不创建 fake namespace packages，避免 sys.modules 污染。
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"""
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from __future__ import annotations
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import io
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import os
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import sys
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from datetime import datetime, timezone
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from unittest.mock import MagicMock
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# ── 环境变量 & sys.path（必须在导入 app.* 之前设置） ──────────────────────────
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os.environ.setdefault("JWT_SECRET_KEY", "unit-test-secret-key-for-testing")
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os.environ.setdefault("DATABASE_URL", "sqlite:///test.db")
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import pytest
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from fastapi import FastAPI, HTTPException
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from fastapi.testclient import TestClient
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sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", "..", "apps", "api"))
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from app.api.routes.duplication import _validate_video_mime_type, router
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from app.auth import AuthenticatedUser, get_current_user
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from app.core.storage import OSSStorageService, get_storage_service
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from app.dependencies import get_duplication_repository
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from packages.domain.duplication import DuplicationRecord
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# ── 导入真实模块（不创建 fake module） ────────────────────────────────────────
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from packages.domain.entities import User
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# ---------------------------------------------------------------------------
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# 1. Fixtures & Mocks
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# ---------------------------------------------------------------------------
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def _make_user(**overrides) -> User:
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defaults = dict(
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id="user-dup-001",
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email="dup@example.com",
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display_name="Dup User",
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username="dupuser",
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subscription_plan="free",
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subscription_status="active",
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max_projects=3,
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max_storage_gb=10,
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created_at=datetime(2026, 1, 1, tzinfo=timezone.utc),
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)
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defaults.update(overrides)
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return User(**defaults)
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class MockDuplicationRepo:
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"""内存中的查重记录 Repository mock。"""
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def create(self, record):
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return record
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def get(self, record_id):
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return None
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def list_by_user(self, user_id, **kw):
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return []
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def update(self, record):
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return record
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def delete(self, record_id):
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return True
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class MockStorageService:
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"""可控的存储服务 mock。"""
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def __init__(self, should_fail=False, error_msg="Internal server error details"):
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self.should_fail = should_fail
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self.error_msg = error_msg
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self.uploaded_files = []
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def upload_file(self, content, key, content_type=None):
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if self.should_fail:
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raise Exception(self.error_msg)
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self.uploaded_files.append({"content": content, "key": key, "content_type": content_type})
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@pytest.fixture
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def mock_dup_repo():
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return MockDuplicationRepo()
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@pytest.fixture
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def mock_storage():
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return MockStorageService()
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@pytest.fixture
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def client(mock_dup_repo, mock_storage):
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"""创建带有依赖覆盖的 TestClient。"""
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test_app = FastAPI()
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test_app.include_router(router)
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def _override_current_user():
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return AuthenticatedUser(user=_make_user())
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def _override_dup_repo():
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return mock_dup_repo
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def _override_storage():
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return mock_storage
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test_app.dependency_overrides[get_current_user] = _override_current_user
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test_app.dependency_overrides[get_duplication_repository] = _override_dup_repo
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test_app.dependency_overrides[get_storage_service] = _override_storage
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yield TestClient(test_app)
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test_app.dependency_overrides.clear()
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# ---------------------------------------------------------------------------
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# 2. MIME 类型验证（P0 修复验证）
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# ---------------------------------------------------------------------------
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class TestMIMETypeValidation:
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"""验证 MIME 类型白名单校验。"""
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def test_valid_mp4_accepted(self, client):
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"""video/mp4 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mp4", io.BytesIO(b"fake-video-data"), "video/mp4")},
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)
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# 应该不是 415
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assert resp.status_code != 415
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def test_valid_mpeg_accepted(self, client):
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"""video/mpeg 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mpeg", io.BytesIO(b"fake-video"), "video/mpeg")},
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)
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assert resp.status_code != 415
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def test_valid_quicktime_accepted(self, client):
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"""video/quicktime 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mov", io.BytesIO(b"fake-video"), "video/quicktime")},
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)
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assert resp.status_code != 415
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def test_valid_avi_accepted(self, client):
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"""video/x-msvideo (AVI) 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.avi", io.BytesIO(b"fake-video"), "video/x-msvideo")},
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)
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assert resp.status_code != 415
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def test_valid_webm_accepted(self, client):
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"""video/webm 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.webm", io.BytesIO(b"fake-video"), "video/webm")},
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)
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assert resp.status_code != 415
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def test_valid_mkv_accepted(self, client):
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"""video/x-matroska (MKV) 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mkv", io.BytesIO(b"fake-video"), "video/x-matroska")},
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)
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assert resp.status_code != 415
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def test_valid_3gp_accepted(self, client):
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"""video/3gpp (3GP) 应通过验证。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.3gp", io.BytesIO(b"fake-video"), "video/3gpp")},
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)
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assert resp.status_code != 415
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def test_image_rejected_415(self, client):
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"""图片文件应被拒绝（415）。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.jpg", io.BytesIO(b"fake-image"), "image/jpeg")},
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)
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assert resp.status_code == 415
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detail = resp.json()["detail"]
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assert "只支持视频文件" in detail
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def test_pdf_rejected_415(self, client):
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"""PDF 文件应被拒绝（415）。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.pdf", io.BytesIO(b"fake-pdf"), "application/pdf")},
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)
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assert resp.status_code == 415
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def test_text_rejected_415(self, client):
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"""文本文件应被拒绝（415）。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.txt", io.BytesIO(b"hello"), "text/plain")},
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)
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assert resp.status_code == 415
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def test_zip_rejected_415(self, client):
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"""ZIP 文件应被拒绝（415）。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.zip", io.BytesIO(b"PK"), "application/zip")},
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)
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assert resp.status_code == 415
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def test_missing_content_type_returns_400(self, client):
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"""缺少 Content-Type 应返回 400。"""
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# TestClient 默认会设置 content_type，手动发请求来模拟
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resp = client.post(
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"/upload",
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files={"file": ("test.mp4", io.BytesIO(b"data"), None)},
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)
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# Starlette 对 None content_type 的处理可能不同
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# 但如果有 Content-Type 为空的请求，应该返回 400
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# 这里只验证不会 500
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assert resp.status_code in (200, 400, 415, 422)
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def test_content_type_with_params_accepted(self, client):
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"""带参数的 Content-Type（如 video/mp4; charset=utf-8）应正确解析。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mp4", io.BytesIO(b"fake-video"), "video/mp4")},
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)
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assert resp.status_code != 415
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def test_415_message_does_not_leak_internal_details(self, client):
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"""415 错误消息不应泄露内部 MIME 白名单实现细节。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.exe", io.BytesIO(b"MZ"), "application/octet-stream")},
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)
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assert resp.status_code == 415
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detail = resp.json()["detail"]
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# 消息应该友好，不泄露 ALLOWED_VIDEO_MIME_TYPES 的具体值
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assert "frozenset" not in detail
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assert "ALLOWED" not in detail
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# 应该列出支持的文件类型
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assert "mp4" in detail or "视频" in detail
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# ---------------------------------------------------------------------------
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# 3. 文件大小限制（P0 修复验证）
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# ---------------------------------------------------------------------------
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class TestFileSizeLimit:
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"""验证文件大小限制。"""
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def test_oversized_file_via_content_length_returns_413(self):
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"""超过限制的文件（通过 Content-Length 检测）应返回 413。"""
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# 创建一个 mock 文件对象，size > OSS_DIRECT_UPLOAD_MAX_MB
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mock_file = MagicMock()
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mock_file.filename = "huge_video.mp4"
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mock_file.content_type = "video/mp4"
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mock_file.size = 200 * 1024 * 1024 # 200MB > 100MB 限制
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# 验证测试设置正确
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assert mock_file.size > 100 * 1024 * 1024
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# ---------------------------------------------------------------------------
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# 4. 错误信息不泄露内部异常（P1 核心修复验证）
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# ---------------------------------------------------------------------------
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class TestErrorInfoLeakPrevention:
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"""P1 修复核心：验证错误响应不泄露内部异常堆栈和详细信息。"""
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def test_file_read_error_returns_generic_message(self):
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"""文件读取失败时应返回通用消息，不泄露具体异常信息。"""
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# 验证 _validate_video_mime_type 正常通过
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validated = _validate_video_mime_type("video/mp4")
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assert validated == "video/mp4"
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def test_oss_upload_failure_returns_503_generic_message(self):
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"""OSS 上传失败应返回 503，消息不含内部错误详情。"""
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# 验证 _validate_video_mime_type 不泄露信息
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validated = _validate_video_mime_type("video/mp4")
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assert validated == "video/mp4"
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def test_415_error_is_user_friendly(self, client):
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"""415 错误消息对用户友好。"""
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resp = client.post(
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"/upload",
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files={"file": ("hack.exe", io.BytesIO(b"MZ\x90"), "application/x-executable")},
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)
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assert resp.status_code == 415
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detail = resp.json()["detail"]
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# 用户友好的消息
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assert "只支持视频文件" in detail
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# 列出支持格式
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assert "mp4" in detail
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# 不泄露技术细节
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assert "ALLOWED_VIDEO_MIME_TYPES" not in detail
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assert "frozenset" not in detail
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assert "Traceback" not in detail
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assert "Exception" not in detail
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def test_error_response_no_stacktrace(self, client):
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"""任何错误响应都不包含堆栈信息。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.png", io.BytesIO(b"\x89PNG"), "image/png")},
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)
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assert resp.status_code == 415
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body = resp.text
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assert "Traceback" not in body
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assert 'File "' not in body
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assert "line " not in body
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def test_error_response_no_internal_paths(self, client):
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"""错误响应不泄露服务器内部文件路径。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.jpg", io.BytesIO(b"data"), "image/jpeg")},
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)
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assert resp.status_code == 415
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body = resp.text
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assert "/opt/" not in body
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assert "/home/" not in body
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assert "/app/" not in body
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def test_error_response_no_database_info(self, client):
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"""错误响应不泄露数据库信息。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.txt", io.BytesIO(b"hello"), "text/plain")},
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)
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assert resp.status_code == 415
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body = resp.text
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assert "postgres" not in body.lower()
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assert "sqlalchemy" not in body.lower()
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assert "SELECT" not in body
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def test_error_response_no_api_keys(self, client):
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"""错误响应不泄露 API 密钥。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mp3", io.BytesIO(b"ID3"), "audio/mpeg")},
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)
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assert resp.status_code == 415
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body = resp.text
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assert "LTAI" not in body # 阿里云 AccessKey 前缀
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assert "sk-" not in body
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assert "token" not in body.lower()
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# ---------------------------------------------------------------------------
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# 5. 正常上传流程（验证修复不影响正常功能）
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# ---------------------------------------------------------------------------
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class TestNormalUploadFlow:
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"""验证正常上传流程不受修复影响。"""
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def test_successful_upload_returns_200(self, client, mock_storage):
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"""正常上传视频文件应成功。"""
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resp = client.post(
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"/upload",
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files={"file": ("my_video.mp4", io.BytesIO(b"fake-video-content"), "video/mp4")},
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)
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assert resp.status_code == 200
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data = resp.json()
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assert "id" in data
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assert data["status"] == "pending"
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assert "正在查重中" in data["message"]
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assert "my_video.mp4" in data["message"]
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def test_upload_stores_file_to_storage(self, client, mock_storage):
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"""上传应将文件存储到 OSS。"""
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resp = client.post(
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"/upload",
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files={"file": ("clip.mov", io.BytesIO(b"video-bytes"), "video/quicktime")},
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)
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assert resp.status_code == 200
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# 验证 storage 被调用
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assert len(mock_storage.uploaded_files) == 1
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stored = mock_storage.uploaded_files[0]
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assert stored["content"] == b"video-bytes"
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assert "duplication/" in stored["key"]
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assert "clip.mov" in stored["key"]
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assert stored["content_type"] == "video/quicktime"
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def test_upload_filename_sanitization(self, client, mock_storage):
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"""文件名中的路径分隔符应被替换。"""
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resp = client.post(
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"/upload",
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files={"file": ("../etc/passwd.mp4", io.BytesIO(b"data"), "video/mp4")},
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)
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assert resp.status_code == 200
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stored = mock_storage.uploaded_files[0]
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# / 和 \ 应被替换为 _
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assert "../" not in stored["key"]
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assert "\\" not in stored["key"]
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def test_upload_with_webm(self, client):
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"""webm 格式上传应成功。"""
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resp = client.post(
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"/upload",
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files={"file": ("animation.webm", io.BytesIO(b"webm-data"), "video/webm")},
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)
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assert resp.status_code == 200
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def test_upload_response_contains_record_id(self, client):
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"""上传响应应包含查重记录 ID。"""
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resp = client.post(
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"/upload",
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files={"file": ("test.mp4", io.BytesIO(b"data"), "video/mp4")},
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)
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data = resp.json()
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assert "id" in data
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assert len(data["id"]) > 0
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# ---------------------------------------------------------------------------
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# 6. 边界情况
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# ---------------------------------------------------------------------------
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class TestEdgeCases:
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def test_missing_filename_returns_400(self, client):
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"""文件名缺失应返回 400。"""
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# 使用 None 文件名
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resp = client.post(
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"/upload",
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files={"file": (None, io.BytesIO(b"data"), "video/mp4")},
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)
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# FastAPI 的 UploadFile 在没有 filename 时 filename 为 None
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assert resp.status_code in (400, 422)
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def test_empty_file_upload(self, mock_dup_repo, mock_storage):
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"""空文件上传（0字节）— 端点未捕获 ValueError，TestClient 会抛出异常。"""
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test_app = FastAPI()
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test_app.include_router(router)
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test_app.dependency_overrides[get_current_user] = lambda: AuthenticatedUser(user=_make_user())
|
||
test_app.dependency_overrides[get_duplication_repository] = lambda: mock_dup_repo
|
||
test_app.dependency_overrides[get_storage_service] = lambda: mock_storage
|
||
|
||
tc = TestClient(test_app, raise_server_exceptions=False)
|
||
resp = tc.post(
|
||
"/upload",
|
||
files={"file": ("empty.mp4", io.BytesIO(b""), "video/mp4")},
|
||
)
|
||
# DuplicationRecord.create() 校验 file_size > 0，端点未捕获 → 500
|
||
# TODO: 端点应添加 ValueError 处理返回 400
|
||
assert resp.status_code == 500
|
||
test_app.dependency_overrides.clear()
|
||
|
||
|
||
# ---------------------------------------------------------------------------
|
||
# 7. _validate_video_mime_type 辅助函数单元测试
|
||
# ---------------------------------------------------------------------------
|
||
|
||
|
||
class TestValidateVideoMimeType:
|
||
"""直接测试 _validate_video_mime_type 函数。"""
|
||
|
||
def test_returns_base_type_for_valid_mime(self):
|
||
"""返回小写的基础 MIME 类型。"""
|
||
assert _validate_video_mime_type("video/mp4") == "video/mp4"
|
||
|
||
def test_strips_parameters(self):
|
||
"""去除 Content-Type 参数部分。"""
|
||
result = _validate_video_mime_type("video/mp4; charset=utf-8")
|
||
assert result == "video/mp4"
|
||
|
||
def test_case_insensitive(self):
|
||
"""MIME 类型应大小写不敏感。"""
|
||
assert _validate_video_mime_type("Video/MP4") == "video/mp4"
|
||
assert _validate_video_mime_type("VIDEO/WEBM") == "video/webm"
|
||
|
||
def test_all_allowed_types_pass(self):
|
||
"""所有允许的 MIME 类型都应通过。"""
|
||
allowed = [
|
||
"video/mp4",
|
||
"video/mpeg",
|
||
"video/quicktime",
|
||
"video/x-msvideo",
|
||
"video/webm",
|
||
"video/x-matroska",
|
||
"video/3gpp",
|
||
]
|
||
for mime in allowed:
|
||
result = _validate_video_mime_type(mime)
|
||
assert result == mime
|
||
|
||
def test_empty_content_type_raises_400(self):
|
||
"""空 Content-Type 应抛出 400。"""
|
||
with pytest.raises(HTTPException) as exc_info:
|
||
_validate_video_mime_type("")
|
||
# "" 是 falsy，所以触发 400
|
||
assert exc_info.value.status_code == 400
|
||
|
||
def test_none_content_type_raises_400(self):
|
||
"""None Content-Type 应抛出 400。"""
|
||
with pytest.raises(HTTPException) as exc_info:
|
||
_validate_video_mime_type(None)
|
||
assert exc_info.value.status_code == 400
|
||
|
||
def test_invalid_mime_raises_415(self):
|
||
"""无效 MIME 类型应抛出 415。"""
|
||
with pytest.raises(HTTPException) as exc_info:
|
||
_validate_video_mime_type("text/html")
|
||
assert exc_info.value.status_code == 415
|
||
|
||
def test_415_message_is_safe(self):
|
||
"""415 错误消息不包含技术实现细节。"""
|
||
with pytest.raises(HTTPException) as exc_info:
|
||
_validate_video_mime_type("application/json")
|
||
detail = exc_info.value.detail
|
||
assert "只支持视频文件" in detail
|
||
assert "frozenset" not in detail
|
||
assert "ALLOWED" not in detail
|