I have a custom controller on a custom object and I am trying to write a test class. However, when I try to save the test class, I get the error:

Compile Error: Method does not exist or incorrect signature: [Deal_Summary__c].add(Deal_Summary__c) at line 39 column 9

Does anyone know how I can fix this?


public class DSReviewController {
    public Deal_Summary__c myDS;
    public DSReviewController(ApexPages.StandardController stdController){
        this.myDS = (Deal_Summary__c)stdController.getRecord();
    public void review() {
        myDS.Manager_Review__c = TRUE; 
        update myDS;

Test Class:

private class TestDealSummController2
    static testMethod void testMyController1()
        Account acct1 = TestCreateRecords.createAcct(0);
        insert acct1;

        Opportunity opp1 = TestCreateRecords.createOppNew(acct1.Id);
        insert opp1;

        Deal_Summary__c DS1 = new Deal_Summary__c();
            DS1.Opportunity__c = opp1.Id;
            DS1.Publisher_s_Legal_Name__c = opp1.AccountId;
            DS1.Agreement_Effective_Date__c = date.newinstance(2025,1,31);
            DS1.Net_Payment_Term_Days__c = 60;

        ApexPages.StandardController DealSumm1 = new ApexPages.standardController(opp1);
        DSReviewController DealSummCont1 = new DSReviewController(DealSumm1);

SObject does not have an add method. The error message is pretty self descriptive. It looks like you are trying to perform an assignment, which should look like:

DealSummCont1.myDS = DS1;

instead of:


You also need to pass a Deal_Summary__c standard controller to your extension:

ApexPages.StandardController controller = new ApexPages.standardController(DS1);

instead of:

ApexPages.StandardController DealSumm1 = new ApexPages.standardController(opp1);
  • Thanks Adrian. I did notice that after I posted. I changed the line and it saves, but now the error below is thrown when I run the test: 'System.TypeException: Invalid conversion from runtime type Opportunity to Deal_Summary__c Class.DSReviewController.<init>: line 6, column 1 Class.TestDealSummController2.testMyController1: line 38, column 1' Any ideas?
    – J. Neilan
    Oct 9 '15 at 19:24
  • Sorry, line 38 should actually be line 19. I typed incorrectly.
    – J. Neilan
    Oct 9 '15 at 19:36
  • So I changed "opp1" in line 18 to "DS1" and now I get: 'System.DmlException: Update failed. First exception on row 0; first error: MISSING_ARGUMENT, Id not specified in an update call: [] Class.DSReviewController.review: line 8, column 1 Class.TestDealSummController2.testMyController1: line 21, column 1'
    – J. Neilan
    Oct 9 '15 at 20:01
  • 2
    @J.Neilan These error messages are all very self descriptive. You cannot update a record that has never been inserted. Pretty straightforward. Just insert your Deal_Summary__c.
    – Adrian Larson
    Oct 9 '15 at 20:02
  • Thanks so much! I'm new to testing for controllers so the error message are a bit cryptic for me yet. Thanks for your help, it worked!
    – J. Neilan
    Oct 9 '15 at 20:10

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