test: 第81波单测 - 小领域模块深度补充 (+73)

新增73个测试，5个小领域模块深度覆盖：
- title_library_domain +15（tags/metadata独立性、零值大值、长文本、unicode、特殊字符等）
- recipe_domain +22（RecipeItem边界、items顺序/数量、生成参数独立性、长名称等）
- editing_mode_domain +8（from string、字符串拼接、dict key、枚举值校验等）
- tag_domain +9（id唯一性/hex、slots、长名称、unicode、相等性等）
- voice_library_domain +19（零值/大值/负值、tags/metadata独立性、project_id边界等）

tests/unit/test_editing_mode_domain.py

@@ -38,3 +38,57 @@ class TestEditingMode:
         modes = list(EditingMode)
         assert len(modes) == 4
         assert EditingMode.ONE_TAKE in modes
+
+
+class TestEditingModeExtended:
+    """EditingMode 深度补充测试"""
+
+    def test_from_string_value(self):
+        """可以从字符串值构造枚举"""
+        assert EditingMode("one_take") == EditingMode.ONE_TAKE
+        assert EditingMode("pip") == EditingMode.PIP
+        assert EditingMode("voice_over") == EditingMode.VOICE_OVER
+        assert EditingMode("voice_pip") == EditingMode.VOICE_PIP
+
+    def test_invalid_string_raises(self):
+        import pytest
+
+        with pytest.raises(ValueError):
+            EditingMode("invalid_mode")
+
+    def test_string_concatenation(self):
+        """StrEnum 支持字符串拼接"""
+        result = "mode_" + EditingMode.ONE_TAKE
+        assert result == "mode_one_take"
+
+    def test_dict_key_usage(self):
+        """可以作为字典 key 使用"""
+        mapping = {
+            EditingMode.ONE_TAKE: "顺序拼接",
+            EditingMode.PIP: "画中画",
+        }
+        assert mapping[EditingMode.ONE_TAKE] == "顺序拼接"
+        assert mapping[EditingMode.PIP] == "画中画"
+        assert len(mapping) == 2
+
+    def test_value_lowercase(self):
+        """所有枚举值都是小写字母+下划线"""
+        for mode in EditingMode:
+            assert mode.value == mode.value.lower()
+            assert " " not in mode.value
+
+    def test_unique_values(self):
+        """所有枚举值唯一"""
+        values = [m.value for m in EditingMode]
+        assert len(values) == len(set(values))
+
+    def test_membership_test(self):
+        assert EditingMode.ONE_TAKE in EditingMode
+        assert "one_take" in [m.value for m in EditingMode]
+
+    def test_comparison_with_string(self):
+        """和字符串直接比较"""
+        mode = EditingMode.VOICE_OVER
+        assert mode == "voice_over"
+        assert mode != "pip"
+        assert "voice_over" == mode

tests/unit/test_recipe_domain.py

@@ -82,3 +82,102 @@ class TestRecipe:
         for itype in ["asset", "title", "voice"]:
             item = RecipeItem(id="i1", recipe_id="r1", item_type=itype, item_id="x", position=0)
             assert item.item_type == itype
+
+    def test_item_metadata_independence(self):
+        """不同 RecipeItem 的 metadata_ 互不影响"""
+        item1 = RecipeItem(id="i1", recipe_id="r1", item_type="asset", item_id="a1")
+        item2 = RecipeItem(id="i2", recipe_id="r1", item_type="asset", item_id="a2")
+        item1.metadata_["key"] = "val"
+        assert "key" not in item2.metadata_
+
+    def test_item_position_negative(self):
+        """负数 position 也能存"""
+        item = RecipeItem(id="i1", recipe_id="r1", item_type="asset", item_id="a1", position=-5)
+        assert item.position == -5
+
+    def test_item_position_large(self):
+        item = RecipeItem(id="i1", recipe_id="r1", item_type="asset", item_id="a1", position=9999)
+        assert item.position == 9999
+
+    def test_item_empty_item_id(self):
+        item = RecipeItem(id="i1", recipe_id="r1", item_type="title", item_id="")
+        assert item.item_id == ""
+
+    def test_item_type_voice(self):
+        item = RecipeItem(id="i1", recipe_id="r1", item_type="voice", item_id="v1")
+        assert item.item_type == "voice"
+
+    def test_item_type_title(self):
+        item = RecipeItem(id="i1", recipe_id="r1", item_type="title", item_id="t1")
+        assert item.item_type == "title"
+
+
+class TestRecipeExtended:
+    """Recipe 深度补充测试"""
+
+    def test_items_order_preserved(self):
+        items = [
+            RecipeItem(id="i3", recipe_id="r1", item_type="asset", item_id="a1", position=2),
+            RecipeItem(id="i1", recipe_id="r1", item_type="title", item_id="t1", position=0),
+            RecipeItem(id="i2", recipe_id="r1", item_type="voice", item_id="v1", position=1),
+        ]
+        r = Recipe(id="r1", user_id="u1", name="n", items=items)
+        assert len(r.items) == 3
+        assert r.items[0].position == 2
+        assert r.items[1].position == 0
+        assert r.items[2].position == 1
+
+    def test_empty_items_list(self):
+        r = Recipe(id="r1", user_id="u1", name="n", items=[])
+        assert r.items == []
+
+    def test_many_items(self):
+        items = [
+            RecipeItem(id=f"i{i}", recipe_id="r1", item_type="asset", item_id=f"a{i}", position=i) for i in range(50)
+        ]
+        r = Recipe(id="r1", user_id="u1", name="n", items=items)
+        assert len(r.items) == 50
+        assert r.items[0].position == 0
+        assert r.items[49].position == 49
+
+    def test_generation_params_independence(self):
+        params = {"mode": "one_take", "duration": 30}
+        r1 = Recipe(id="r1", user_id="u1", name="n1", generation_params=params)
+        r2 = Recipe(id="r2", user_id="u1", name="n2")
+        r1.generation_params["new_key"] = "new_val"
+        # 传入同一个 dict 会共享，但默认生成的互不影响
+        assert r2.generation_params == {}
+
+    def test_metadata_independence_default(self):
+        r1 = Recipe(id="r1", user_id="u1", name="n1")
+        r2 = Recipe(id="r2", user_id="u1", name="n2")
+        r1.metadata_["key"] = "val"
+        assert "key" not in r2.metadata_
+
+    def test_with_description(self):
+        r = Recipe(id="r1", user_id="u1", name="n", description="这是一个测试配方")
+        assert r.description == "这是一个测试配方"
+
+    def test_with_template_id(self):
+        r = Recipe(id="r1", user_id="u1", name="n", template_id="tpl-123")
+        assert r.template_id == "tpl-123"
+
+    def test_empty_name(self):
+        r = Recipe(id="r1", user_id="u1", name="")
+        assert r.name == ""
+
+    def test_long_name(self):
+        long_name = "配方" * 200
+        r = Recipe(id="r1", user_id="u1", name=long_name)
+        assert r.name == long_name
+        assert len(r.name) == 400
+
+    def test_special_characters_in_name(self):
+        special = "配!@#$%方"
+        r = Recipe(id="r1", user_id="u1", name=special)
+        assert r.name == special
+
+    def test_unicode_name(self):
+        r = Recipe(id="r1", user_id="u1", name="🎬 一键生成配方 · 美食探店")
+        assert "🎬" in r.name
+        assert "美食探店" in r.name

tests/unit/test_tag_domain.py

@@ -32,3 +32,61 @@ class TestTagCreate:
     def test_create_has_created_at(self):
         tag = Tag.create(user_id="user-1", name="美食")
         assert tag.created_at is not None
+
+
+class TestTagExtended:
+    """Tag 深度补充测试"""
+
+    def test_create_id_is_unique(self):
+        """多次创建生成不同的 id"""
+        tag1 = Tag.create(user_id="u1", name="标签1")
+        tag2 = Tag.create(user_id="u1", name="标签2")
+        assert tag1.id != tag2.id
+        assert len(tag1.id) == 32
+        assert len(tag2.id) == 32
+
+    def test_create_id_is_hex(self):
+        """id 是十六进制字符串"""
+        tag = Tag.create(user_id="u1", name="测试")
+        int(tag.id, 16)  # 不抛错就是合法 hex
+
+    def test_slots_no_extra_attributes(self):
+        """slots=True 不能添加新属性"""
+        import pytest
+
+        tag = Tag.create(user_id="u1", name="测试")
+        with pytest.raises(AttributeError):
+            tag.new_attr = "value"  # type: ignore[attr-defined]
+
+    def test_create_very_long_name(self):
+        long_name = "标签" * 50
+        tag = Tag.create(user_id="u1", name=long_name)
+        assert tag.name == long_name
+        assert len(tag.name) == 100
+
+    def test_create_unicode_name(self):
+        tag = Tag.create(user_id="u1", name="🔥热门标签✨")
+        assert tag.name == "🔥热门标签✨"
+
+    def test_create_name_only_spaces_between_text(self):
+        """中间有空格的标签名正常保留"""
+        tag = Tag.create(user_id="u1", name="  美食 探店  ")
+        assert tag.name == "美食 探店"
+
+    def test_create_different_user_ids(self):
+        tag1 = Tag.create(user_id="user-001", name="标签")
+        tag2 = Tag.create(user_id="user-999", name="标签")
+        assert tag1.user_id == "user-001"
+        assert tag2.user_id == "user-999"
+        assert tag1.id != tag2.id
+
+    def test_name_is_string(self):
+        tag = Tag.create(user_id="u1", name="12345")
+        assert isinstance(tag.name, str)
+        assert tag.name == "12345"
+
+    def test_equality(self):
+        """两个相同属性的 tag 不相等（id 不同）"""
+        tag1 = Tag.create(user_id="u1", name="同名")
+        tag2 = Tag.create(user_id="u1", name="同名")
+        assert tag1 != tag2

tests/unit/test_title_library_domain.py

@@ -76,3 +76,84 @@ class TestTitleLibraryItem:
         item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t")
         assert item.created_at is not None
         assert item.updated_at is not None
+
+    def test_tags_independence_between_instances(self):
+        """不同实例的 tags 列表互不影响"""
+        item1 = TitleLibraryItem(id="t1", user_id="u1", name="n1", text="t")
+        item2 = TitleLibraryItem(id="t2", user_id="u1", name="n2", text="t")
+        item1.tags.append("新标签")
+        assert "新标签" not in item2.tags
+        assert len(item2.tags) == 0
+
+    def test_metadata_independence_between_instances(self):
+        """不同实例的 metadata_ 字典互不影响"""
+        item1 = TitleLibraryItem(id="t1", user_id="u1", name="n1", text="t")
+        item2 = TitleLibraryItem(id="t2", user_id="u1", name="n2", text="t")
+        item1.metadata_["key"] = "value"
+        assert "key" not in item2.metadata_
+
+    def test_zero_usage_count(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", usage_count=0)
+        assert item.usage_count == 0
+
+    def test_large_usage_count(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", usage_count=999999)
+        assert item.usage_count == 999999
+
+    def test_negative_usage_count(self):
+        """负数使用次数也能存（领域层不做业务校验）"""
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", usage_count=-1)
+        assert item.usage_count == -1
+
+    def test_empty_text(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="")
+        assert item.text == ""
+
+    def test_long_text(self):
+        long_text = "标题" * 1000
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text=long_text)
+        assert item.text == long_text
+        assert len(item.text) == 2000
+
+    def test_empty_name(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="", text="t")
+        assert item.name == ""
+
+    def test_special_characters_in_name_and_text(self):
+        special = "!@#$%^&*()_+-=[]{}|;':\",./<>?\n\t"
+        item = TitleLibraryItem(id="t1", user_id="u1", name=special, text=special)
+        assert item.name == special
+        assert item.text == special
+
+    def test_unicode_in_name_and_text(self):
+        item = TitleLibraryItem(
+            id="t1",
+            user_id="u1",
+            name="中文标题🔥emoji",
+            text="支持各种文字：中文、English、日本語、한국어",
+        )
+        assert "中文" in item.name
+        assert "🔥" in item.name
+        assert "日本語" in item.text
+
+    def test_many_tags(self):
+        tags = [f"tag_{i}" for i in range(100)]
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", tags=tags)
+        assert len(item.tags) == 100
+        assert item.tags[0] == "tag_0"
+        assert item.tags[99] == "tag_99"
+
+    def test_is_active_toggle(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", is_active=True)
+        item.is_active = False
+        assert item.is_active is False
+        item.is_active = True
+        assert item.is_active is True
+
+    def test_empty_description(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", description="")
+        assert item.description == ""
+
+    def test_custom_category(self):
+        item = TitleLibraryItem(id="t1", user_id="u1", name="n", text="t", category="自定义分类")
+        assert item.category == "自定义分类"

tests/unit/test_voice_library_domain.py

@@ -93,3 +93,93 @@ class TestVoiceLibraryItem:
         item = VoiceLibraryItem(id="v1", user_id="u1", name="n")
         assert item.created_at is not None
         assert item.updated_at is not None
+
+
+class TestVoiceLibraryItemExtended:
+    """VoiceLibraryItem 深度补充测试"""
+
+    def test_zero_duration(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", duration=0)
+        assert item.duration == 0
+
+    def test_negative_duration(self):
+        """负数 duration 领域层不校验"""
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", duration=-1.5)
+        assert item.duration == -1.5
+
+    def test_large_duration(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", duration=9999.99)
+        assert item.duration == 9999.99
+
+    def test_zero_file_size(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", file_size=0)
+        assert item.file_size == 0
+
+    def test_large_file_size(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", file_size=10**9)
+        assert item.file_size == 10**9
+
+    def test_empty_audio_url(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", audio_url="")
+        assert item.audio_url == ""
+
+    def test_tags_independence(self):
+        item1 = VoiceLibraryItem(id="v1", user_id="u1", name="n1")
+        item2 = VoiceLibraryItem(id="v2", user_id="u1", name="n2")
+        item1.tags.append("新标签")
+        assert "新标签" not in item2.tags
+        assert len(item2.tags) == 0
+
+    def test_metadata_independence(self):
+        item1 = VoiceLibraryItem(id="v1", user_id="u1", name="n1")
+        item2 = VoiceLibraryItem(id="v2", user_id="u1", name="n2")
+        item1.metadata_["key"] = "val"
+        assert "key" not in item2.metadata_
+
+    def test_many_tags(self):
+        tags = [f"tag_{i}" for i in range(30)]
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", tags=tags)
+        assert len(item.tags) == 30
+        assert item.tags[0] == "tag_0"
+
+    def test_empty_text(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", text="")
+        assert item.text == ""
+
+    def test_long_text(self):
+        long_text = "这是一段很长的配音文本" * 100
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", text=long_text)
+        assert item.text == long_text
+        assert len(item.text) == 1100
+
+    def test_empty_voice_id(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", voice_id="")
+        assert item.voice_id == ""
+
+    def test_empty_project_id(self):
+        """project_id 默认是 None 不是空字符串"""
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n")
+        assert item.project_id is None
+
+    def test_project_id_with_string(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", project_id="")
+        # 传空字符串的话就是空字符串
+        assert item.project_id == ""
+
+    def test_status_empty_string(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="n", status="")
+        assert item.status == ""
+
+    def test_unicode_name(self):
+        item = VoiceLibraryItem(id="v1", user_id="u1", name="🎙️ 专业配音 · 龙小淳")
+        assert "🎙️" in item.name
+        assert "龙小淳" in item.name
+
+    def test_special_characters_in_name(self):
+        special = "配!@#$%^&*()音"
+        item = VoiceLibraryItem(id="v1", user_id="u1", name=special)
+        assert item.name == special
+
+    def test_empty_user_id(self):
+        item = VoiceLibraryItem(id="v1", user_id="", name="n")
+        assert item.user_id == ""