test(wave191): 补全direct_construction测试用例，增加完整构造场景

- 拆分test_direct_construction为minimal和full两个用例
- minimal用例验证默认值行为
- full用例验证所有字段均可独立赋值
- 新增EditingMode导入

tests/unit/domain/test_edit_template.py

@@ -0,0 +1,281 @@
+"""edit_template 剪辑模板实体单测."""
+
+from datetime import datetime, timezone
+
+import pytest
+from domain.edit_template import EditTemplate, EditTemplateStatus
+from domain.editing_mode import EditingMode
+
+# ── EditTemplateStatus 枚举 ──────────────────────────────────────────────────
+
+
+class TestEditTemplateStatus:
+    """EditTemplateStatus 枚举"""
+
+    def test_enum_values(self):
+        assert EditTemplateStatus.ACTIVE.value == "active"
+        assert EditTemplateStatus.INACTIVE.value == "inactive"
+
+    def test_is_str_enum(self):
+        assert isinstance(EditTemplateStatus.ACTIVE, str)
+        assert EditTemplateStatus.ACTIVE == "active"
+
+    def test_from_string(self):
+        assert EditTemplateStatus("active") == EditTemplateStatus.ACTIVE
+        assert EditTemplateStatus("inactive") == EditTemplateStatus.INACTIVE
+
+    def test_invalid_raises(self):
+        with pytest.raises(ValueError):
+            EditTemplateStatus("deleted")
+
+
+# ── EditTemplate.create 工厂方法 ────────────────────────────────────────────
+
+
+class TestEditTemplateCreate:
+    """EditTemplate.create 工厂方法"""
+
+    def test_minimal_create(self):
+        t = EditTemplate.create("测试模板")
+        assert t.id is not None
+        assert len(t.id) == 32  # uuid4 hex
+        assert t.name == "测试模板"
+        assert t.description == ""
+        assert t.template_type == "default"
+        assert t.editing_mode == "one_take"
+        assert t.config == {}
+        assert t.preview_url == ""
+        assert t.sort_weight == 0
+        assert t.status == EditTemplateStatus.ACTIVE
+        assert t.version == 1
+
+    def test_unique_ids(self):
+        t1 = EditTemplate.create("模板A")
+        t2 = EditTemplate.create("模板B")
+        assert t1.id != t2.id
+
+    def test_custom_fields(self):
+        t = EditTemplate.create(
+            "自定义模板",
+            description="这是一个自定义模板",
+            template_type="story",
+            editing_mode="one_take",
+            config={"key": "value"},
+            preview_url="https://example.com/preview.mp4",
+            sort_weight=100,
+            status=EditTemplateStatus.INACTIVE,
+            version=2,
+        )
+        assert t.name == "自定义模板"
+        assert t.description == "这是一个自定义模板"
+        assert t.template_type == "story"
+        assert t.editing_mode == "one_take"
+        assert t.config == {"key": "value"}
+        assert t.preview_url == "https://example.com/preview.mp4"
+        assert t.sort_weight == 100
+        assert t.status == EditTemplateStatus.INACTIVE
+        assert t.version == 2
+
+    def test_name_stripped(self):
+        t = EditTemplate.create("  带空格的模板  ")
+        assert t.name == "带空格的模板"
+
+    def test_empty_name_raises(self):
+        with pytest.raises(ValueError, match="名称"):
+            EditTemplate.create("")
+
+    def test_whitespace_only_name_raises(self):
+        with pytest.raises(ValueError):
+            EditTemplate.create("   ")
+
+    def test_invalid_editing_mode_raises(self):
+        with pytest.raises(ValueError, match="editing_mode"):
+            EditTemplate.create("测试", editing_mode="invalid_mode")
+
+    def test_empty_editing_mode_falls_back_to_default(self):
+        t = EditTemplate.create("测试", editing_mode="")
+        assert t.editing_mode == "one_take"
+
+    def test_whitespace_editing_mode_falls_back(self):
+        t = EditTemplate.create("测试", editing_mode="   ")
+        assert t.editing_mode == "one_take"
+
+    def test_editing_mode_stripped(self):
+        t = EditTemplate.create("测试", editing_mode=" one_take ")
+        assert t.editing_mode == "one_take"
+
+    def test_description_stripped(self):
+        t = EditTemplate.create("测试", description="  描述  ")
+        assert t.description == "描述"
+
+    def test_template_type_stripped(self):
+        t = EditTemplate.create("测试", template_type="  vlog  ")
+        assert t.template_type == "vlog"
+
+    def test_empty_template_type_falls_back(self):
+        t = EditTemplate.create("测试", template_type="")
+        assert t.template_type == "default"
+
+    def test_none_config_becomes_empty_dict(self):
+        t = EditTemplate.create("测试", config=None)
+        assert t.config == {}
+        assert isinstance(t.config, dict)
+
+    def test_preview_url_stripped(self):
+        t = EditTemplate.create("测试", preview_url="  https://x.com/a.mp4  ")
+        assert t.preview_url == "https://x.com/a.mp4"
+
+    def test_timestamps_are_utc(self):
+        t = EditTemplate.create("测试")
+        assert t.created_at.tzinfo is not None
+        assert t.updated_at.tzinfo is not None
+
+    def test_created_at_equals_updated_at_on_create(self):
+        t = EditTemplate.create("测试")
+        # 创建时两个时间应该非常接近
+        diff = abs((t.updated_at - t.created_at).total_seconds())
+        assert diff < 1.0
+
+
+# ── 状态操作 ─────────────────────────────────────────────────────────────────
+
+
+class TestEditTemplateStatusOperations:
+    """EditTemplate 状态操作"""
+
+    def test_activate_sets_active(self):
+        t = EditTemplate.create("测试", status=EditTemplateStatus.INACTIVE)
+        t.activate()
+        assert t.status == EditTemplateStatus.ACTIVE
+        assert t.is_active is True
+
+    def test_deactivate_sets_inactive(self):
+        t = EditTemplate.create("测试")
+        t.deactivate()
+        assert t.status == EditTemplateStatus.INACTIVE
+        assert t.is_active is False
+
+    def test_is_active_true(self):
+        t = EditTemplate.create("测试")
+        assert t.is_active is True
+
+    def test_is_active_false(self):
+        t = EditTemplate.create("测试", status=EditTemplateStatus.INACTIVE)
+        assert t.is_active is False
+
+    def test_activate_updates_updated_at(self):
+        t = EditTemplate.create("测试", status=EditTemplateStatus.INACTIVE)
+        old_updated = t.updated_at
+        t.activate()
+        assert t.updated_at >= old_updated
+
+    def test_deactivate_updates_updated_at(self):
+        t = EditTemplate.create("测试")
+        old_updated = t.updated_at
+        t.deactivate()
+        assert t.updated_at >= old_updated
+
+
+# ── 版本操作 ─────────────────────────────────────────────────────────────────
+
+
+class TestEditTemplateVersion:
+    """EditTemplate 版本操作"""
+
+    def test_bump_version_increments(self):
+        t = EditTemplate.create("测试")
+        assert t.version == 1
+        t.bump_version()
+        assert t.version == 2
+
+    def test_bump_version_multiple(self):
+        t = EditTemplate.create("测试", version=5)
+        t.bump_version()
+        t.bump_version()
+        t.bump_version()
+        assert t.version == 8
+
+    def test_bump_version_updates_updated_at(self):
+        t = EditTemplate.create("测试")
+        old_updated = t.updated_at
+        t.bump_version()
+        assert t.updated_at >= old_updated
+
+
+# ── dataclass 基础特性 ───────────────────────────────────────────────────────
+
+
+class TestEditTemplateBasics:
+    """EditTemplate 基础特性"""
+
+    def test_slots_no_extra_attrs(self):
+        t = EditTemplate.create("测试")
+        with pytest.raises(AttributeError):
+            t.nonexistent_field = "value"
+
+    def test_direct_construction_minimal(self):
+        # 最小构造：仅必填字段 + 状态，其余走默认值
+        t = EditTemplate(
+            id="custom_id",
+            name="直接构造",
+            status=EditTemplateStatus.ACTIVE,
+        )
+        assert t.id == "custom_id"
+        assert t.name == "直接构造"
+        assert t.status == EditTemplateStatus.ACTIVE
+        # 默认值检查
+        assert t.description == ""
+        assert t.config == {}
+        assert t.version == 1
+        assert t.editing_mode == EditingMode.ONE_TAKE.value
+        assert isinstance(t.created_at, datetime)
+        assert isinstance(t.updated_at, datetime)
+
+    def test_direct_construction_full(self):
+        # 完整构造：所有字段都传
+        now = datetime(2025, 1, 1, tzinfo=timezone.utc)
+        t = EditTemplate(
+            id="full_id",
+            name="完整构造",
+            description="测试描述",
+            template_type="custom",
+            editing_mode=EditingMode.PIP.value,
+            config={"key": "value"},
+            preview_url="https://example.com/preview.jpg",
+            sort_weight=100,
+            status=EditTemplateStatus.INACTIVE,
+            version=3,
+            created_at=now,
+            updated_at=now,
+        )
+        assert t.id == "full_id"
+        assert t.name == "完整构造"
+        assert t.description == "测试描述"
+        assert t.template_type == "custom"
+        assert t.editing_mode == EditingMode.PIP.value
+        assert t.config == {"key": "value"}
+        assert t.preview_url == "https://example.com/preview.jpg"
+        assert t.sort_weight == 100
+        assert t.status == EditTemplateStatus.INACTIVE
+        assert t.version == 3
+        assert t.created_at == now
+        assert t.updated_at == now
+
+    def test_config_is_independent(self):
+        # 不同实例的 config 应该是独立的 dict
+        t1 = EditTemplate.create("模板1")
+        t2 = EditTemplate.create("模板2")
+        t1.config["key"] = "value"
+        assert "key" not in t2.config
+
+    def test_equality(self):
+        # 两个不同实例即使内容相同也不等（id不同）
+        t1 = EditTemplate.create("同名模板")
+        t2 = EditTemplate.create("同名模板")
+        assert t1 != t2
+
+    def test_same_id_equal(self):
+        now = datetime.now(timezone.utc)
+        t1 = EditTemplate(id="same", name="同名", created_at=now, updated_at=now)
+        t2 = EditTemplate(id="same", name="同名", created_at=now, updated_at=now)
+        assert t1 == t2