test(handlers): 添加基础处理器并行传输相关单元测试

- 实现 download_files_parallel 方法的并发下载功能测试
- 验证上传文件并行处理收集URL功能的正确性
- 测试下载文件时设置锁等待时间跨度属性
- 验证无缓存下载时锁等待时间为零的场景
- 测试上传文件时设置详细的跨度属性功能
- 添加渲染视频效果相关的参数解析测试
- 实现存储服务上传指标

tests/unit/test_storage_upload_metrics.py

@@ -0,0 +1,81 @@
+# -*- coding: utf-8 -*-
+
+import requests
+
+from services import storage
+
+
+class _FakeResponse:
+    def __init__(self, status_code=200):
+        self.status_code = status_code
+
+    def raise_for_status(self):
+        return None
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        return False
+
+
+def test_upload_file_with_metrics_file_not_found(tmp_path):
+    missing_path = tmp_path / "missing.mp4"
+    success, metrics = storage.upload_file_with_metrics(
+        "https://example.com/upload",
+        str(missing_path),
+        max_retries=1,
+        timeout=1,
+    )
+
+    assert success is False
+    assert metrics["error_type"] == "file_not_found"
+    assert metrics["upload_method"] == "none"
+
+
+def test_upload_file_with_metrics_http_success(tmp_path, monkeypatch):
+    source_path = tmp_path / "video.mp4"
+    source_path.write_bytes(b"content")
+
+    monkeypatch.setattr("services.storage.requests.put", lambda *args, **kwargs: _FakeResponse(200))
+
+    success, metrics = storage.upload_file_with_metrics(
+        "https://example.com/upload",
+        str(source_path),
+        max_retries=3,
+        timeout=1,
+    )
+
+    assert success is True
+    assert metrics["upload_method"] == "http"
+    assert metrics["http_attempts"] == 1
+    assert metrics["http_retry_count"] == 0
+    assert metrics["http_status_code"] == 200
+    assert metrics["content_type"] == "video/mp4"
+
+
+def test_upload_file_with_metrics_retry_then_success(tmp_path, monkeypatch):
+    source_path = tmp_path / "audio.aac"
+    source_path.write_bytes(b"audio-bytes")
+    call_counter = {"count": 0}
+
+    def _fake_put(*args, **kwargs):
+        call_counter["count"] += 1
+        if call_counter["count"] == 1:
+            raise requests.exceptions.Timeout()
+        return _FakeResponse(200)
+
+    monkeypatch.setattr("services.storage.requests.put", _fake_put)
+
+    success, metrics = storage.upload_file_with_metrics(
+        "https://example.com/upload",
+        str(source_path),
+        max_retries=3,
+        timeout=1,
+    )
+
+    assert success is True
+    assert metrics["http_attempts"] == 2
+    assert metrics["http_retry_count"] == 1
+    assert metrics["http_status_code"] == 200
+    assert metrics["error_type"] == ""