A trigger that sets a case status to 'Closed' if there are more than 2 cases created that day associated with the same contact Also close cases if there are more than 3 cases created on that account that day

MaxCases Apex Trigger

/*
Write a trigger that sets a case status to 'Closed' if there are more than 2 cases created 
that day associated with the same contact
Also close cases if there are more than 3 cases created on that account that day
*/

trigger MaxCases on Case (before insert) {
    for(Case myCase : Trigger.new) {
        //Find all cases created today
        if(myCase.ContactId != null) {
            List<Case> casesCreatedToday = [SELECT Id
                                              FROM Case
                                             WHERE ContactId = :myCase.ContactId
                                               AND CreatedDate = TODAY];
            //Close the case
            if(casesCreatedToday.size() >= 2){
            	myCase.Status = 'Closed';    
            }   
        }
        
        //Find all cases with this account created today
        if(myCase.AccountId != null){
            List<Case> casesTodayFromAccount = [SELECT Id
                                                  FROM CASE
                                                 WHERE AccountId = :myCase.AccountId
                                                   AND CreatedDate = TODAY];
            
            //Close the case
            if(casesTodayFromAccount.size() >=3){
                myCase.Status = 'Closed';
            } 
        }
    }    
}

//Test Class

@isTest
private class MaxCasesTest {
	
    @isTest static void noCasesToday(){
        Contact con = new Contact();
        con.LastName = 'Flint';
        insert con;
        
        Case myCase = new Case();
        myCase.ContactId = con.Id;
        myCase.Status = 'New';
        insert myCase;
        
        Case updatedCase = [SELECT Status
                              FROM Case
                             WHERE Id = :myCase.Id];
        
        System.assertEquals('New', updatedCase.Status);
            
    }
    
    @isTest static void threeCasesTodayOnContact(){
        Contact con = new Contact();
        con.LastName = 'Flint';
        insert con;
        
        List<Case> oldCases = new List<Case>();
        for(integer i = 0; i < 2; i++){
            Case oldCase = new Case();
            oldCase.ContactId = con.Id;
            oldCases.add(oldCase);
        }
        insert oldCases;
        
        Case myCase = new Case();
        myCase.ContactId = con.Id;
        insert myCase;
        
        Case updatedCase = [SELECT Status 
                              FROM Case
                             WHERE Id = :myCase.Id];
        
        System.assertEquals('Closed', updatedCase.Status);
    }
    
    @isTest static void fourCasesTodayOnAccount(){
        Account acc = new Account();
        acc.Name = 'Windsor Hotels';
        insert acc;
        
        List<Case> oldCases = new List<Case>();
        for(integer i = 0; i < 3; i++){
            Case oldCase = new Case();
            oldCase.AccountId = acc.Id;
            oldCases.add(oldCase);
        }
        insert oldCases;
        
        Case myCase = new Case();
        myCase.AccountId = acc.Id;
        insert myCase;
        
        Case updatedCase = [SELECT Status
                              FROM Case
                             WHERE Id = :myCase.Id];
        
        System.assertEquals('Closed', updatedCase.Status);
    }
}