test(wave155): generated_video生成视频实体单测 +16

为 domain/generated_video.py 新增 16 个单测：

- create 必填字段 + 默认值
- strip 行为
- 4个空值校验（project_id/task_id/name/file_url）
- 唯一ID + 时间戳
- 零值合法（宽高/fps）
- generation_params 独立性

tests/unit/domain/test_generated_video.py

@@ -0,0 +1,170 @@
+"""generated_video 单测.
+
+domain 层生成视频实体纯逻辑模块，0 外部依赖。
+覆盖：create工厂/校验、默认值、数据完整性。
+"""
+
+from __future__ import annotations
+
+from packages.domain.generated_video import GeneratedVideo
+
+
+class TestGeneratedVideoCreate:
+    """GeneratedVideo.create 工厂测试."""
+
+    def test_create_required_fields(self):
+        """最简创建（仅必填字段）."""
+        v = GeneratedVideo.create(
+            project_id="proj1",
+            generation_task_id="task1",
+            name="我的视频",
+            file_url="https://cdn.example.com/v.mp4",
+        )
+        assert v.project_id == "proj1"
+        assert v.generation_task_id == "task1"
+        assert v.name == "我的视频"
+        assert v.file_url == "https://cdn.example.com/v.mp4"
+        assert isinstance(v.id, str)
+        assert len(v.id) > 0
+
+    def test_create_defaults(self):
+        """默认值正确."""
+        v = GeneratedVideo.create(
+            project_id="p1",
+            generation_task_id="t1",
+            name="v",
+            file_url="http://x/v.mp4",
+        )
+        assert v.file_size == 0
+        assert v.duration == 0.0
+        assert v.width == 0
+        assert v.height == 0
+        assert v.fps == 0.0
+        assert v.thumbnail_url is None
+        assert v.status == "completed"
+        assert v.review_status == "pending_review"
+        assert v.generation_params == {}
+        assert v.video_fingerprint is None
+        assert v.is_duplicate is False
+        assert v.duplicate_of is None
+
+    def test_create_with_all_fields(self):
+        """带全部字段创建."""
+        v = GeneratedVideo.create(
+            project_id="proj1",
+            generation_task_id="task1",
+            name="  测试视频  ",
+            file_url="  https://cdn.example.com/v.mp4  ",
+            file_size=1024000,
+            duration=120.5,
+            width=1920,
+            height=1080,
+            fps=30.0,
+            thumbnail_url="https://cdn.example.com/thumb.jpg",
+            generation_params={"template": "tpl1", "bgm": "bgm1"},
+        )
+        assert v.name == "测试视频"  # strip
+        assert v.file_url == "https://cdn.example.com/v.mp4"  # strip
+        assert v.file_size == 1024000
+        assert v.duration == 120.5
+        assert v.width == 1920
+        assert v.height == 1080
+        assert v.fps == 30.0
+        assert v.thumbnail_url == "https://cdn.example.com/thumb.jpg"
+        assert v.generation_params == {"template": "tpl1", "bgm": "bgm1"}
+
+    def test_create_strips_fields(self):
+        """字符串字段会 strip."""
+        v = GeneratedVideo.create(
+            project_id="  p1  ",
+            generation_task_id="  t1  ",
+            name="  v  ",
+            file_url="  http://x/v  ",
+        )
+        assert v.project_id == "p1"
+        assert v.generation_task_id == "t1"
+        assert v.name == "v"
+        assert v.file_url == "http://x/v"
+
+    def test_create_empty_project_id(self):
+        """空 project_id 无效."""
+        try:
+            GeneratedVideo.create("", "t1", "v", "http://x/v")
+            assert False
+        except ValueError as e:
+            assert "project_id" in str(e)
+
+    def test_create_whitespace_project_id(self):
+        """纯空白 project_id 无效."""
+        try:
+            GeneratedVideo.create("   ", "t1", "v", "http://x/v")
+            assert False
+        except ValueError as e:
+            assert "project_id" in str(e)
+
+    def test_create_empty_task_id(self):
+        """空 generation_task_id 无效."""
+        try:
+            GeneratedVideo.create("p1", "", "v", "http://x/v")
+            assert False
+        except ValueError as e:
+            assert "generation_task_id" in str(e)
+
+    def test_create_empty_name(self):
+        """空 name 无效."""
+        try:
+            GeneratedVideo.create("p1", "t1", "", "http://x/v")
+            assert False
+        except ValueError as e:
+            assert "name" in str(e)
+
+    def test_create_empty_file_url(self):
+        """空 file_url 无效."""
+        try:
+            GeneratedVideo.create("p1", "t1", "v", "")
+            assert False
+        except ValueError as e:
+            assert "file_url" in str(e)
+
+    def test_create_whitespace_file_url(self):
+        """纯空白 file_url 无效."""
+        try:
+            GeneratedVideo.create("p1", "t1", "v", "   ")
+            assert False
+        except ValueError as e:
+            assert "file_url" in str(e)
+
+    def test_create_generation_params_none_defaults_empty(self):
+        """generation_params=None 默认为空 dict."""
+        v = GeneratedVideo.create("p1", "t1", "v", "http://x/v", generation_params=None)
+        assert v.generation_params == {}
+
+    def test_create_unique_id(self):
+        """不同视频 id 不同."""
+        v1 = GeneratedVideo.create("p", "t", "v", "http://x/v")
+        v2 = GeneratedVideo.create("p", "t", "v", "http://x/v")
+        assert v1.id != v2.id
+
+    def test_create_has_timestamps(self):
+        """有生成和创建时间."""
+        v = GeneratedVideo.create("p", "t", "v", "http://x/v")
+        assert v.generated_at is not None
+        assert v.created_at is not None
+
+    def test_zero_dimensions_valid(self):
+        """宽高为 0 合法（未指定分辨率）."""
+        v = GeneratedVideo.create("p", "t", "v", "http://x/v", width=0, height=0)
+        assert v.width == 0
+        assert v.height == 0
+
+    def test_zero_fps_valid(self):
+        """fps 为 0 合法."""
+        v = GeneratedVideo.create("p", "t", "v", "http://x/v", fps=0.0)
+        assert v.fps == 0.0
+
+    def test_generation_params_independent(self):
+        """不同实例的 generation_params 独立."""
+        v1 = GeneratedVideo.create("p", "t", "v", "http://x/v")
+        v2 = GeneratedVideo.create("p", "t", "v", "http://x/v")
+        v1.generation_params["key"] = "value"
+        assert "key" not in v2.generation_params