Arsthbt

I have a helper method in my code called canQueryObject, and that method returns a boolean. I have some code that calls the method via the following line of code:

if(!myObjectHelper.canQueryObject(Schema.SObjectType.<<objectType>>)) ... 

I'd like to test some scenarios where the scenario is false. Is there a way I can use Mock or Stubs in a unit-test to set canQueryObject to false?

I typically use a fairly simple pattern and don't bring in a framework. It would look something like the following:

public virtual with sharing class MyObjectHelper

 static MyObjectHelper instance = new MyObjectHelper();
 @TestVisible static void setMock(MyObjectHelper mock) instance = mock; 

 public static Boolean canQueryObject(SObjectType sObjectType)
 
 return instance.getCanQueryObject(sObjectType);
 

 // the two method names cannot match or you will get a compile fail
 protected virtual Boolean getCanQueryObject(SObjectType sObjectType)
 
 return sObjectType.getDescribe().isQueryable();
 

Then in your test, you can have a mock return always true or always false, as you wish.

@IsTest
class MyObjectHelperTests

 class HelperMock extends MyObjectHelper
 
 Boolean isQueryable = true;
 protected override Boolean getCanQueryObject(SObjectType sObjectType)
 
 return isQueryable;
 
 

 @IsTest static void testCannotQuery()
 
 HelperMock mock = new HelperMock();
 mock.isQueryable = false;
 MyObjectHelper.setMock(mock);

 Test.startTest();
 Boolean canQuery = MyObjectHelper.canQueryObject(...);
 Test.stopTest();

 system.assertEquals(false, canQuery, 'Some informative message');