Managing Model Objects › Working with Versions of Functions and Messages › Testing an External Function

Testing an External Function

To test a non-current generatable version, first generate the source and create the program object. Since the version is not current, the program object will not have the correct name and cannot be called by other program objects. To test the program object, use one of the following methods:

• Use the Call a Program (Y2CALL) command. This command determines the parameters required by an external function directly from details contained in the model. You can provide values for all input-capable fields and you can reuse these values for subsequent calls. This command is especially useful when the parameter interface is complex or if it has changed. You can also retrieve and display output parameters when the called program terminates.

  You can also invoke the Y2CALL command using option 16 on the Edit Model Object List, the Display Model Usages, and Display Model References panels.

• If the program interface is the same as for the current version, you can rename the program object in a separate test library, add the test library to your library list, and test the new functionality.

For more information on the Call a Program (Y2CALL) command, see the Command Reference Guide.