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himanshu huske 7himanshu huske 7 

Please provide test class for Trigger

I Have Object : Country__c  With Fields: Name__c,Capital_City__c,Region__c,Sub_Region__c,
Regional_Block__c 
Country__c object  has records of various countries
And in Lead Object I have Fields Country_1__c,Region__c,Capital_City__c,Sub_Region__c,Regional_Block__c
Whenever we insert/update any country name in lead Country_1__c field which exist in Country__c(object) record field  Name__c
then populate all lead fields 
trigger countryInfoUpdate on Lead (before insert, before update) {
 //List<Lead> lList = new List<Lead>();  
  Set<String> strSet = new Set<String>();
    for(Lead l : trigger.new){
    strSet.add(l.Country_1__c); 
    }
    List<Country__c> conList = [Select id,Name__c,Capital_City__c,Region__c,Sub_Region__c,
                                Regional_Block__c from Country__c Where Name__c in: strSet];
    map<String,Country__c>  conMap = new   map<String,Country__c>();
    for(Country__c c : conlist){
        conMap.put(c.Name__c, c);
    }
    for(Lead l : trigger.new){
        if(conMap.containsKey(l.Country_1__c)){
          l.Region__c = conmap.get(l.Country_1__c).Region__c;
          l.Capital_City__c = conmap.get(l.Country_1__c).Capital_City__c;
          l.Sub_Region__c = conmap.get(l.Country_1__c).Sub_Region__c;
          l.Regional_Block__c = conmap.get(l.Country_1__c).Regional_Block__c;
        }
    } 
}





 
Devi ChandrikaDevi Chandrika (Salesforce Developers) 
Hi Himanshu
Try this test class 
@istest
public class testCountryInfoUpdate {
    @istest
    public static  void testlead(){
        Test.startTest();
        
        country__c c = new country__c();
        c.name__c = 'testName';
        c.Capital_City__c = 'testCapital';
        c.Region__c = 'testRegion';
        insert c;
        
        lead l = new lead();
        l.lastname = 'test';
        l.Company = 'xyz';
        l.status = 'open - not contacted';
        l.Country_1__c = 'testName';
        insert l;
        
        test.stopTest();
    }
    
}

Please refer below links which might help you further
http://www.sfdcpoint.com/salesforce/test-class-with-example-salesforce/
https://trailhead.salesforce.com/en/content/learn/modules/apex_testing/apex_testing_intro

​​​​​​​Hope this helps you
If this helps kindly mark it as solved so that it may help others in future.

Thanks and Regards
NILESH RAJ 20NILESH RAJ 20

You will understand test class in detail at test class in salesforce (https://sfdcwisdom.com/test-class-in-salesforce/)
For you query try this:
@istest
public class CountryInfoUpdateTest {
@istest
public static void testlead(){
Test.startTest();
country__c coun = new country__c();
coun .name__c = 'DemoName';
coun .Capital_City__c = 'capital';
coun .Region__c = 'sampleRegion';
insert c;
lead l = new lead();
l.lastname = 'test';
l.Company = 'xyz';
l.status = 'open - not contacted';
l.Country_1__c = 'DemoName';
insert l;
test.stopTest();
}
}