test: add comprehensive tests across modules to increase coverage above 60%

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

tests/test_config_loader.py

@@ -0,0 +1,59 @@
+"""Tests for app/utils/config_loader.py module."""
+import pytest
+
+from app.utils.config_loader import convert_setting_value
+
+
+@pytest.mark.unit
+class TestConvertSettingValue:
+    """Tests for convert_setting_value function."""
+
+    def test_converts_bool_true_string(self):
+        """Test converting 'true' string to boolean."""
+        result = convert_setting_value("true", bool)
+        assert result is True
+
+    def test_converts_bool_false_string(self):
+        """Test converting 'false' string to boolean."""
+        result = convert_setting_value("false", bool)
+        assert result is False
+
+    def test_converts_bool_yes(self):
+        """Test converting 'yes' to boolean."""
+        result = convert_setting_value("yes", bool)
+        assert result is True
+
+    def test_converts_integer_string(self):
+        """Test converting integer string."""
+        result = convert_setting_value("42", int)
+        assert result == 42
+
+    def test_converts_invalid_integer(self):
+        """Test converting invalid integer returns 0."""
+        result = convert_setting_value("not_a_number", int)
+        assert result == 0
+
+    def test_converts_float_string(self):
+        """Test converting float string."""
+        result = convert_setting_value("3.14", float)
+        assert result == 3.14
+
+    def test_converts_invalid_float(self):
+        """Test converting invalid float returns 0.0."""
+        result = convert_setting_value("not_a_float", float)
+        assert result == 0.0
+
+    def test_preserves_regular_string(self):
+        """Test regular strings are preserved."""
+        result = convert_setting_value("hello world", str)
+        assert result == "hello world"
+
+    def test_handles_none(self):
+        """Test handling of None."""
+        result = convert_setting_value(None, str)
+        assert result is None
+
+    def test_converts_list_string(self):
+        """Test converting comma-separated string to list."""
+        result = convert_setting_value("a, b, c", list)
+        assert result == ["a", "b", "c"]