SyncMadeEasy/force-app/main/default/classes/CountryCode_Test.cls

@isTest
public class CountryCode_Test {
    @isTest
    static void testCountryCode()
    {
        Test.startTest();
        CountryCode.loadCountryCode();
        String countryCode = CountryCode.getCountryCode('macau');
        Test.stopTest(); 
        System.assertEquals(countryCode,'MO');
        
    }
    @isTest
    static void testCountryCode1()
    {
        Test.startTest();
        CountryCode.loadCountryCode();
        Test.stopTest(); 
        System.assert(true);
    }
    
}