I'm trying to write some tests for a Visualforce controller extension, however the tests are failing because a query in the controller is not retrieving related sObjects in a query. Outside of testing (in the sandbox), the related sObjects are retrieved without issue, but in testing the related sObjects are null.

Here is the query code in the controller:

private void queryRel ()
{
	for (Relationship__c r : [SELECT Id,Name,Primary_Client__r.Name,Owner.Id,Owner.Name,Owner.IsActive FROM Relationship__c WHERE Id = : relId FOR UPDATE])
		rel = r;
}

 In the test environment, Owner is null.

Here is the setup code for the test:

List<Relationship__c> rList = [SELECT Id,OwnerId,(SELECT Id FROM Accounts__r) FROM Relationship__c];
rList[2].OwnerId = [SELECT Id FROM User WHERE IsActive = TRUE AND Id != : UserInfo.getUserId() LIMIT 1].Id;
Database.update(rList[2]);

ApexPages.StandardController sc = new ApexPages.StandardController([SELECT Id FROM Relationship__c WHERE Id = : rList[0].Id]);
RelationshipAddController rac = new RelationshipAddController(sc);
System.AssertNotEquals('fatal',rac.pageMsgSeverity,rac.pageMsgBody + rac.rel);

 Currently that first assertion fails because an internal check to verify the Owner is active fails since Owner.IsActive is null.

Any suggestions would be greatly appreciated.