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_render_video_effects.py

@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+
+import pytest
+
+from domain.config import WorkerConfig
+from domain.task import Effect, OutputSpec, RenderSpec
+from handlers.render_video import RenderSegmentVideoHandler
+
+
+class _DummyApiClient:
+    pass
+
+
+def _create_handler(tmp_path):
+    config = WorkerConfig(
+        api_endpoint='http://127.0.0.1:18084/api',
+        access_key='TEST_ACCESS_KEY',
+        worker_id='test-worker',
+        temp_dir=str(tmp_path),
+        cache_enabled=False,
+        cache_dir=str(tmp_path / 'cache')
+    )
+    return RenderSegmentVideoHandler(config, _DummyApiClient())
+
+
+def test_get_zoom_params_with_valid_values():
+    effect = Effect.from_string('zoom:1.5,1.35,2')
+    assert effect is not None
+
+    start_sec, scale_factor, duration_sec = effect.get_zoom_params()
+    assert start_sec == pytest.approx(1.5)
+    assert scale_factor == pytest.approx(1.35)
+    assert duration_sec == pytest.approx(2.0)
+
+
+@pytest.mark.parametrize(
+    'effect_str',
+    [
+        'zoom:-1,0.9,-2',
+        'zoom:nan,inf,0',
+        'zoom:bad,value,data',
+        'zoom:,,',
+    ],
+)
+def test_get_zoom_params_invalid_values_fallback_to_default(effect_str):
+    effect = Effect.from_string(effect_str)
+    assert effect is not None
+    assert effect.get_zoom_params() == (0.0, 1.2, 1.0)
+
+
+def test_build_command_with_zoom_uses_filter_complex(tmp_path):
+    handler = _create_handler(tmp_path)
+    render_spec = RenderSpec(effects='zoom:1.5,1.4,2')
+    output_spec = OutputSpec(width=1080, height=1920, fps=30)
+
+    command = handler._build_command(
+        input_file='input.mp4',
+        output_file='output.mp4',
+        render_spec=render_spec,
+        output_spec=output_spec,
+        duration_ms=6000,
+    )
+
+    assert '-filter_complex' in command
+    assert '-vf' not in command
+
+
+def test_build_video_filters_zoom_and_camera_shot_stack_in_order(tmp_path):
+    handler = _create_handler(tmp_path)
+    render_spec = RenderSpec(effects='cameraShot:3,1|zoom:1,1.2,2')
+    output_spec = OutputSpec(width=1080, height=1920, fps=30)
+
+    filters = handler._build_video_filters(
+        render_spec=render_spec,
+        output_spec=output_spec,
+        duration_ms=8000,
+        source_duration_sec=10.0,
+    )
+
+    camera_shot_marker = 'concat=n=2:v=1:a=0'
+    zoom_marker = "overlay=0:0:enable='between(t,1.0,3.0)'"
+    assert camera_shot_marker in filters
+    assert zoom_marker in filters
+    assert filters.index(camera_shot_marker) < filters.index(zoom_marker)