diff --git a/joj3_config_generator/models/task.py b/joj3_config_generator/models/task.py
index 99b92fe..708d36e 100644
--- a/joj3_config_generator/models/task.py
+++ b/joj3_config_generator/models/task.py
@@ -109,7 +109,7 @@ class Task(BaseModel):
 
 class Config(BaseModel):
     root: Path = Path(".")
-    path: Path = Path("conf.toml")
-    task: Task
+    path: Path = Path("task.toml")
+    task: Task  # Task name (e.g., hw3 ex5)
     release: Release  # Release configuration
     stages: List[Stage]  # list of stage configurations
diff --git a/tests/convert/utils.py b/tests/convert/utils.py
index 1978773..0a458a1 100644
--- a/tests/convert/utils.py
+++ b/tests/convert/utils.py
@@ -11,15 +11,15 @@ from joj3_config_generator.models import repo, task
 def read_convert_files(
     case_name: str,
 ) -> Tuple[repo.Config, task.Config, Dict[str, Any]]:
-    root = Path(__file__).resolve().parent
-    repo_toml_path = root.absolute() / case_name / "repo.toml"
+    root = Path(__file__).resolve().parent / case_name
+    repo_toml_path = root / "repo.toml"
     repo_toml = repo_toml_path.read_text() if repo_toml_path.exists() else ""
-    task_toml_path = root.absolute() / case_name / "task.toml"
+    task_toml_path = root / "task.toml"
     task_toml = task_toml_path.read_text() if task_toml_path.exists() else ""
-    result = json.loads((root.absolute() / case_name / "task.json").read_text())
+    result = json.loads((root / "task.json").read_text())
     return (
-        repo.Config(**rtoml.loads(repo_toml)),
-        task.Config(**rtoml.loads(task_toml)),
+        repo.Config(root=root, **rtoml.loads(repo_toml)),
+        task.Config(root=root, **rtoml.loads(task_toml)),
         result,
     )
 
diff --git a/tests/utils.py b/tests/utils.py
deleted file mode 100644
index 7eda07e..0000000
--- a/tests/utils.py
+++ /dev/null
@@ -1,7 +0,0 @@
-from typing import Any
-
-
-def safe_id(x: Any) -> str:
-    if not x or not isinstance(x, (tuple, list)) or len(x) == 0:
-        return "no_test_cases"
-    return str(x[0])