adding simple unit test

Author: gilbertohasnofb

tests/test-config.toml

@@ -0,0 +1,2 @@
+[section]
+key = 42

tests/utils/test_load_config.py

@@ -0,0 +1,39 @@
+from pathlib import Path
+
+import pytest
+import tomllib
+
+from src.utils import load_config  # adjust if your import path differs
+
+CONFIG_PATH = Path(__file__).parent.parent / "test-config.toml"
+
+
+class TestLoadConfigSuccess:
+    def test_loads_valid_toml_as_dict(self) -> None:
+        result = load_config(CONFIG_PATH)
+
+        assert result == {"section": {"key": 42}}
+
+    def test_accepts_str_path(self) -> None:
+        result = load_config(str(CONFIG_PATH))
+
+        assert result == {"section": {"key": 42}}
+
+    def test_nested_key_value(self) -> None:
+        result = load_config(CONFIG_PATH)
+
+        assert result["section"]["key"] == 42
+
+
+class TestLoadConfigMissingFile:
+    def test_raises_file_not_found_for_missing_path(self) -> None:
+        missing_path = CONFIG_PATH.parent / "does_not_exist.toml"
+
+        with pytest.raises(FileNotFoundError, match=str(missing_path)):
+            load_config(missing_path)
+
+    def test_raises_file_not_found_for_missing_str_path(self) -> None:
+        missing_path = str(CONFIG_PATH.parent / "does_not_exist.toml")
+
+        with pytest.raises(FileNotFoundError):
+            load_config(missing_path)