Hi All,

I am new in visual force. I have written my first visual force controller class and having issue with the test class. My controller class is below:

public class TestVFController{
    Private Account ACID;
    public List<Contact> Conts {get; set;}
    public Boolean refreshPage {get; set;}
    ApexPages.StandardController stdCtrl;

public TestVFController(ApexPages.StandardController myController) {
    	stdCtrl = myController;
    	refreshPage = false;
        This.ACID = (Account)stdCtrl.getRecord();
        Conts = new List<Contact>();
        Contact c = new Contact();
        c.accountid = ACID.id;
        Conts.add(c);
}
        
    public void addrow() {
        Conts.add(new Contact());}
            
    public void removerow(){
        Integer i = conts.size();
        Conts.remove(i-1);}
            
    public PageReference savereturn() {
        insert Conts;
        //PageReference result = stdctrl.view();
        PageReference result = new PageReference('/apex/test2');
        //PageReference result=ApexPages.currentpage();
        result.setRedirect(true);
        return result;
    }
        
    public PageReference OK(){
        refreshPage = true;
        PageReference pageRef = new PageReference('/apex/test1');
        //pageRef.setRedirect(true);
        return pageref;
    }
}

And my test class is below:

@isTest
public class TestForController{
    static testMethod void Testmycontroller() {
        List<Contact> c = new List<Contact>{};
        Account act = new Account(Name = 'Test acc');
        insert act;
        
        PageReference pageRef = Page.test1;
        Test.setCurrentPage(pageRef);
        
        // Instantiate the standard controller
        Apexpages.StandardController sc = new Apexpages.standardController(act);
        TestVFController mycon  = new TestVFController(sc);
        String nextPage = mycon.savereturn().getUrl();
        
        Contact con = new Contact();
        con.FirstName = 'Maf';
        con.LastName = 'Test';
        Con.Email = 'maf@test.com';
        Con.accountid = act.id;
        c.add(Con);
        insert c;
        
        mycon.Conts.add(con);
        
        mycon.savereturn();
        mycon.addrow();
        mycon.removerow();
    }
}

Note that, My Standard Controller is Account and My extension controller class is Adding multiple contacts related to that account

I get the following error and only 53% code coverage:

System.DmlException: Insert failed. First exception on row 0; first error: REQUIRED_FIELD_MISSING, Required fields are missing: [LastName]: [LastName]


Class.TestVFController.savereturn: line 25, column 1
Class.TestForController.Testmycontroller: line 15, column 1

Could anyone please help me on that???