I am trying to increase my code coverage, I have only provided parts of my code that I am trying to cover. I have to create a List to be able to pass over my values into the method. My Errors I have listed below.

  • Expecting'<' but was '('
  • Invalid type: AccountParameter
  • method does not exist or incorrect signature void handleNewAccounts(List) from the type ProcessHandlerShowAccounts

    public class ProcessHandlerShowAccountsTest {
     @isTest static void testCallout() {
        ProcessHandlerShowAccounts.AccountParameter testAccount = new ProcessHandlerShowAccounts.AccountParameter();
        testAccount.accountId = '0010Z00000schfZZZZ';
        testAccount.name = 'create';
    //I get my 1st two errors here
        LIST<AccountParameter> testActLst = new LIST();
    //I get my last error here

Method I am trying to call lives within this Class

public class ProcessHandlerShowAccounts 
    public class AccountParameter
        public Id accountId;
        public String name;

 public static void handleNewAccounts(AccountParameter [] accountParameters) 


  • 3
    Please don't edit the answer back in to the question; this makes the answer seem useless.
    – sfdcfox
    Jun 20, 2018 at 13:58

1 Answer 1


You have to provide the fully qualified parameterized type name to the new operator:

List<AccountParameter> testActLst = new List<AccountParameter>();

You can't instantiate the type List as such.

That's what these errors are telling you. It found a ( where it was expecting <, from the type name. Then it got confused about the type of your variable, and found there's no method handleNewAccounts that takes a List, because you cannot have an untyped List.

  • Let me update my code, does this work?
    – nameishi
    Jun 20, 2018 at 13:33
  • My code fails, am i properly adding values within my List?
    – nameishi
    Jun 20, 2018 at 13:37
  • As written, your code does not add anything to the List. You must call List.add().
    – David Reed
    Jun 20, 2018 at 13:38
  • But dont I have to specify accountId from name? or just do List.add('0010Z00000schfZZZZ')
    – nameishi
    Jun 20, 2018 at 13:40
  • 1
    You need to add testAccount to your list.
    – David Reed
    Jun 20, 2018 at 13:41

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