Lesson: 08 | Testing Batch Apex

Testing Batch Apex

Apex Class

public class UpdateContactAddresses implements
    Database.Batchable<sObject>, Database.Stateful {
    public Database.QueryLocator start(Database.BatchableContext BC) {
        return Database.getQueryLocator(
            'SELECT ID, BillingStreet, BillingCity, BillingState, ' +
            'BillingPostalCode, (SELECT ID, MailingStreet, MailingCity, ' +
            'MailingState, MailingPostalCode FROM Contacts) FROM Account '  +
            'Where BillingCountry = \'USA\'');
    }
    public void execute(Database.BatchableContext BC, List<Account> acList){
        List<Contact> contacts = new List<Contact>();
        for (Account ac : acList) {
            for (Contact con : ac.contacts) {
                con.MailingStreet = ac.BillingStreet;
                con.MailingCity = ac.BillingCity;
                con.MailingState = ac.BillingState;
                con.MailingPostalCode = ac.BillingPostalCode;
                contacts.add(con);
            }
        }
        update contacts;
    }
    public void finish(Database.BatchableContext BC){

Apex Code

UpdateContactAddresses obj = new UpdateContactAddresses();
Database.executeBatch(obj);

Apex Test Class

@isTest
private class UpdateContactAddressesTest {
    @testSetup
    static void setup() {
        List<Account> acList = new List<Account>();
        List<Contact> conList = new List<Contact>();

        for (Integer i=0;i<10;i++) {
            acList.add(new Account(name='Account '+i,
                billingcity='New York', billingcountry='USA'));
        }
        insert acList;

        for (Account ac : [select id from account]) {
            conList.add(new Contact(firstname='first',
                lastname='last', accountId=ac.id));
        }
        insert conList;
    }
    @isTest static void test() {
        Test.startTest();
        UpdateContactAddresses objA = new UpdateContactAddresses();
        Database.executeBatch(objA);
        Test.stopTest();
  
        System.assertEquals(10, [select count() from contact where MailingCity = 'New York']);
    }
}

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Lesson: 08 | Testing Batch Apex

Apex Class

Apex Intermediate