202302522_강지후

app/services/user_service.py

@@ -16,3 +16,10 @@ def get_user(user_id):
 def delete_user(user_id):
     """user_id로 회원 삭제"""
     pass
+
+
+user_db = {}  # 임시 DB
+
+def get_user_info(user_id: str):
+    """등록된 유저를 user_id로 조회"""
+    return user_db.get(user_id)

tests/test_service_users.py

@@ -0,0 +1,11 @@
+from app.services.user_service import get_user_info
+
+def test_query_nonexistent_user_returns_none():
+    # Given
+    nonexistent_user_id = "ghost_user_999"
+
+    # When
+    result = get_user_info(nonexistent_user_id)
+
+    # Then
+    assert result is None