feat(): unit tests for domain entities and basic invariants

tests/unit/test_auth_identity_entity.py

@@ -0,0 +1,36 @@
+from datetime import UTC
+from uuid import UUID, uuid4
+
+from template_project.application.auth_identity.entity import AuthIdentity, AuthMethod
+from template_project.application.user.entity import UserId
+
+
+def test_auth_identity_factory_creates_valid_identity() -> None:
+    user_id = UserId(uuid4())
+
+    identity = AuthIdentity.factory(
+        user_id=user_id,
+        method=AuthMethod.EMAIL,
+        identifier="test@example.com",
+        secret_key="hashed_password",
+    )
+
+    assert isinstance(identity.id, UUID)
+    assert identity.user_id == user_id
+    assert identity.method == AuthMethod.EMAIL
+    assert identity.identifier == "test@example.com"
+    assert identity.secret_key == "hashed_password"  # noqa: S105
+    assert identity.deleted_at is None
+    assert identity.created_at.tzinfo == UTC
+
+
+def test_auth_identity_factory_without_secret_key() -> None:
+    user_id = UserId(uuid4())
+
+    identity = AuthIdentity.factory(
+        user_id=user_id,
+        method=AuthMethod.YANDEX,
+        identifier="yandex_id_123",
+    )
+
+    assert identity.secret_key is None