Add more tests

tests/test_config.py

@@ -0,0 +1,14 @@
+import pytest
+from src.config.loader import ConfigLoader
+
+class TestConfig:
+    def setup_method(self):
+        self.loader = ConfigLoader()
+
+    def test_load_default_rules(self):
+        rules = self.loader.load_default_rules()
+        assert len(rules) > 0
+
+    def test_load_merged_rules(self):
+        rules = self.loader.load_merged_rules()
+        assert len(rules) > 0