Dears,

I would like to cover a test class for this simple code , But i am facing a following Error.
 

Error: Compile Error: Static method cannot be referenced from a non static context: String GD_TradeLicenseRunningBanner.fetchUser() at line 39 column 15

public class GD_TradeLicenseRunningBanner {
   
    @AuraEnabled 
    public static String fetchUser(){        User oUser = [select id,Name,TimeZoneSidKey,contactId,Username,Alias,Country,Email,FirstName,LastName,IsActive,IsPortalEnabled, Contact.accountId   FROM User Where id =: userinfo.getuserId() ];        account acc = [select id,name,GD_General_Info__c from account where id=: oUser.contact.accountId Limit 1];
        return acc.GD_General_Info__c;
    }


}


@Test CLass
 

@isTest
Public class GD_TradeLicenseRunningBannerTest{

@testSetup
    static void testSetupMethod(){
    system.debug('Running Into the test class');
        profile pr = [SELECT Id,Name FROM Profile WHERE Name = 'GD PP Sales Rep'];
        User usr = new User(Alias = GD_TestDataFactory.generateUniqueText(), 
                          Email='test@test.com', 
                          EmailEncodingKey='UTF-8', 
                          LastName='Test', 
                          LanguageLocaleKey='en_US', 
                          LocaleSidKey='en_US', 
                          ProfileId = pr.Id, 
                          TimeZoneSidKey='America/Los_Angeles', 
                          UserName=GD_TestDataFactory.generateRandomUserName());
        Insert usr;
        
        
        account acc = new account();
        acc.name='test';
        insert acc;
        
        contact con = new contact(firstname='testName', lastName='testName', accountId = acc.id);
        insert con;
        
        Opportunity Opp = new Opportunity(Name = 'Test Opp', CloseDate = Date.today());

        
        System.Test.startTest();
        GD_TradeLicenseRunningBanner trade = new GD_TradeLicenseRunningBanner();
        trade.fetchUser();
        System.Test.stopTest();
    }
}

Thanks in advance.
Soundar.