To use the selector you just created, you need to add it to the assembly diagram of the selector module.
Open the assembly diagram.
A new assembly diagram is created for each module you create, which you work with using the assembly editor.
In the assembly diagram for the test modules shown in Figure 3, you can see that the Mock Controller and Archive Retrieval interfaces are available as standalone references for use from our tests.
Now we'll add the rule group to your assembly diagram and test it.
Figure 1 shows the assembly diagram of the process application.
Open the OrderProcessing module assembly diagram.
Now, open the assembly diagram for the module in the assembly editor.
As with the state machine, the partners available depend on the references in the assembly diagram; there is one partner for each reference.
Typically, you would test a module by right-clicking the module in the Business Integration view, or by right-clicking the module assembly diagram and selecting test module.