public void And_custom_conversion_function_is_specified_its_value_should_be_returned()
{
var settings = new AppSettings(SimpleConfig.AbsolutePathToConfigFile);
var expectedValue = 100.123m;
var value = settings.GetValue<decimal>(SimpleConfig.DecimalValue, (setting, settingValue) => expectedValue);
Assert.AreEqual(expectedValue, value);
}