Can I create a reusable class that creates opportunity records?

Question

I have multiple Test classes that has duplicate code. One of the methods is to create opportunity records. Can I create a separate class that does this by itself and reference it from the Test classes?

Answer 1

Short answer:

YES!

Long Answer:

It's the same as with any reusable code, just create another class and add your method:

@IsTest
public with sharing class TestUtils
{
  public static void CreateOppty()
  {
    // create and insert an oppty etc.
  }
}

You can then call this method from any of your other test methods to setup data:

public static testmethod void SomeTest()
{
  TestUtils.CreateOppty();
  Test.StartTest();
  // do testing
}

There's an example in the documentation too.

Answer 2

You can definitely do this, I always do this for my frequently used objects. You can just create a standard public class and then call it from your test classes. Because it gets called a lot, the test coverage for the class is generally going to be near 100%.

I typically do the following:

@isTest
public class TestObjects {

// public Lists of freq used objects eg account
public List<Account> accList;

// methods to create a new instance
public void addNewAccount(Account a) {
    if (accList == null) {accList = new List<Account>();}
    accList.add(a);
}

public static Account newAccountFromData (String accName, Id recType) {
    Account a = new Account(Name = accName, RecordTypeId = recType);
    return a;
}

Then in your test class,

TestObjects t = new TestObjects();
t.addNewAccount(TestObjects.newAccountFromData('Test acc'));

And reference the account as

Account thisacct = t.accList[0];

Variations are obviously possible, this is a start...