Sometimes in Salesforce tests, you need to create User objects to run part of the test as a specific type of user.
However, since the Salesforce Summer 08 update, attempts to create both User objects and normal objects (such as Accounts) in the same test lead to the following error:
MIXED_DML_OPERATION, DML operation on setup object is not permitted after you have updated a non-setup object (or vice versa): User, original object: Account
Note that the error doesn't happen when you run the tests from Eclipse/Force.com IDE, but it does happen when you deploy to Salesforce and then run the tests from within Salesforce.
How do I re-write my tests to avoid this error?
Here's a simple example of a test that causes the error:
static testMethod void test_mixed_dmlbug() {
Profile p = [select id from profile where name='(some profile)'];
UserRole r = [Select id from userrole where name='(some role)'];
User u = new User(alias = 'standt', email='[email protected]',
emailencodingkey='UTF-8', lastname='Testing',
languagelocalekey='en_US',
localesidkey='en_US', profileid = p.Id, userroleid = r.Id,
timezonesidkey='America/Los_Angeles',
username='[email protected]');
Account a = new Account(Firstname='Terry', Lastname='Testperson');
insert a;
System.runAs(u) {
a.PersonEmail = '[email protected]';
update a;
}
}