Creating MockBox

mockBox = new testbox.system.MockBox();

// Within a TestBox Spec
getMockBox()

The factory takes in one constructor argument that is not mandatory: generationPath. This path is a relative path of where the factory generates internal mocking stubs that are included later on at runtime. Therefore, the path must be a path that can be used using cfinclude. The default path the mock factory uses is the following, so you do not have to specify one, just make sure the path has WRITE permissions:

/testbox/system/stubs

Hint If you are using Lucee or ACF10+ you can also decide to use the ram:// resource and place all generated stubs in memory.