chore: 添加虚拟环境到仓库

- 添加 backend_service/venv 虚拟环境
- 包含所有Python依赖包
- 注意：虚拟环境约393MB，包含12655个文件

backend_service/venv/lib/python3.13/site-packages/chromadb/test/auth/test_auth_utils.py

@@ -0,0 +1,87 @@
+import pytest
+
+from chromadb.auth.utils import maybe_set_tenant_and_database
+from chromadb.auth import UserIdentity
+from chromadb.config import DEFAULT_DATABASE, DEFAULT_TENANT
+from chromadb.errors import ChromaAuthError
+
+
+@pytest.fixture
+def user_identity() -> UserIdentity:
+    return UserIdentity(
+        user_id="test_user_id",
+        tenant="test_tenant",
+        databases=["test_database"],
+    )
+
+
+def test_doesnt_overrite_from_auth(user_identity: UserIdentity) -> None:
+    resolved_tenant, resolved_database = maybe_set_tenant_and_database(
+        user_identity=user_identity,
+        overwrite_singleton_tenant_database_access_from_auth=False,
+        user_provided_tenant="user_provided_tenant",
+        user_provided_database="user_provided_database",
+    )
+
+    assert resolved_tenant == "user_provided_tenant"
+    assert resolved_database == "user_provided_database"
+
+
+def test_sets_tenant_and_database_when_none_or_default_provided(
+    user_identity: UserIdentity,
+) -> None:
+    resolved_tenant, resolved_database = maybe_set_tenant_and_database(
+        user_identity=user_identity,
+        overwrite_singleton_tenant_database_access_from_auth=True,
+        user_provided_tenant=DEFAULT_TENANT,
+        user_provided_database=DEFAULT_DATABASE,
+    )
+
+    assert resolved_tenant == "test_tenant"
+    assert resolved_database == "test_database"
+
+    resolved_tenant, resolved_database = maybe_set_tenant_and_database(
+        user_identity=user_identity,
+        overwrite_singleton_tenant_database_access_from_auth=True,
+        user_provided_tenant=None,
+        user_provided_database=None,
+    )
+
+    assert resolved_tenant == "test_tenant"
+    assert resolved_database == "test_database"
+
+
+def test_errors_when_provided_tenant_and_database_dont_match_from_auth(
+    user_identity: UserIdentity,
+) -> None:
+    with pytest.raises(ChromaAuthError):
+        maybe_set_tenant_and_database(
+            user_identity=user_identity,
+            overwrite_singleton_tenant_database_access_from_auth=True,
+            user_provided_tenant="user_provided_tenant",
+            user_provided_database="user_provided_database",
+        )
+
+
+def test_doesnt_overrite_from_auth_when_ambiguous(user_identity: UserIdentity) -> None:
+    user_identity.tenant = "*"
+    user_identity.databases = ["*"]
+    resolved_tenant, resolved_database = maybe_set_tenant_and_database(
+        user_identity=user_identity,
+        overwrite_singleton_tenant_database_access_from_auth=True,
+        user_provided_tenant=None,
+        user_provided_database=None,
+    )
+
+    assert resolved_tenant is None
+    assert resolved_database is None
+
+    resolved_tenant, resolved_database = maybe_set_tenant_and_database(
+        user_identity=user_identity,
+        overwrite_singleton_tenant_database_access_from_auth=True,
+        user_provided_tenant="user_provided_tenant",
+        user_provided_database="user_provided_database",
+    )
+
+    assert resolved_tenant == "user_provided_tenant"
+    assert resolved_database == "user_provided_database"