Moves new contacts to the matching account based on domain. Contact email domain should match the website domain.

AccountMatcherHwTrigger

/*
 Move new contacts to the matching account based on domain. Contact email domain should match the website domain.
 Ex. john@fastco.com matches only to an account with website www.fastco.com
*/

trigger AccountMatcherHw on Contact (before insert) {
    for (Contact con : Trigger.new) {
        
        if(con.Email != null) {
        	//Create a website from the email domain
        	String domain = con.Email.split('@').get(1);
            String website = 'www.' + domain;
            System.debug('Matching' + con.FirstName + ' to website: ' + website);
            
            List<Account> matchingAccounts = [SELECT Id
                                                FROM Account
                                               WHERE Website = :website];
            
            //If only one match, move the contact
            if(matchingAccounts.size() == 1){
                con.AccountId = matchingAccounts.get(0).Id;
            }
        }    
    }
}


//Test class

@isTest
private class AccountMatcherHwTest {
	
    @isTest static void noAccountMatch() {
        Contact myCon 	= new Contact();
        myCon.FirstName = 'Matt';
        myCon.LastName  = 'Tran';
        myCon.Email 	= 'mtran@waterfordhotels.com';
        insert myCon;
        
        Contact updatedCon = [SELECT AccountId
                                FROM Contact
                               WHERE Id = :myCon.Id];
        
        System.assertEquals(null, updatedCon.AccountId);
    }
    
    @isTest static void AccountMatchFound(){
        
        String domain = 'waterfordhotels.com';
        
        Account acc = new Account();
        acc.Name    = 'Waterford Hotels';
        acc.Website = 'www.'+ domain;
        insert acc;
        
        Contact myCon = new Contact();
        myCon.FirstName = 'Matt';
        myCon.LastName  = 'Tran';
        myCon.Email 	= 'mtran@waterfordhotels.com';
        insert myCon;
        
        Contact updatedCon = [SELECT AccountId
                                FROM Contact
                               WHERE Id = :myCon.Id];
        
        System.assertEquals(acc.Id, updatedCon.AccountId);
    }
}