How can i write a unit test for a trigger in salesforce?

Question

I have a trigger that i have written that I need tested to be able to get code coverage in salesforce:

here is the trigger:

Trigger MyCh_SALESFORCETRIGGERUPDATE_tr_I on Account (after insert) 
{
    set<ID> ids = Trigger.newMap.keyset(); 
    for(ID id : ids) 
    {
    MyCh_Account__c change = new MyCh_Account__c();
    change.Action__c = 'insert'; 
    change.Link__c = id; 
    change.Processed__c = false; 
    change.Map__c = 'SALESFORCE TRIGGER UPDATE'; 
    insert change;
    }
}

I have tried :

@isTest
public class MyAccountcreationTest
{
    static testMethod void testMethod1()
    {
        Account testAccount = new Account();
        testAccount.Name='Test Account' ;
        insert testAccount;

       Account acc1 = [Select Id, Link__c, Action__c, Processed__c, Map__c from Account where Id =: testAccount.Id];
       System.assertEquals(acc1.Name,'Test Account');
       System.assertEquals(acc1.Link__c, acc1.Id);
       System.assertEquals(acc1.Processed__c,false);
       System.assertEquals(acc1.Map__c,'SALESFORCE TRIGGER UPDATE');
       System.assertEquals(acc1.Action__c,'insert');
    }
}

I expect the test to pass but it gives an error : Map__c , Action__c , Link__c are not fields of Account object.

Also , how does the test actually link to the trigger itself ?

TemporaryFix TemporaryFix · Accepted Answer · 2019-08-13T13:50:55

You are creating a MyCh_Account__c record in your trigger but you're not testing that in your test. You need to query for the record created in your trigger and assert that the fields are correct.

How can i write a unit test for a trigger in salesforce?

1 Answers