MFUPP Preprocessor

The Micro Focus Unit Testing Framework includes a stackable preprocessor (MFUPP) that enables you to instrument a COBOL program during unit test creation without the need to edit the original source code.

It provides the following functionality:

• Self-contained tests - By inserting additional copybooks into the source program when it is put under test, you can test on a more granular level than typical unit tests: you can directly test single paragraphs or sections. No changes are required to the original source under test as long as it has a program-id defined. When compiling using this preprocessor, the program-id is used to identify the source code and the copybooks to insert, to form one unit of work in which to run and test. See Inserting Test Code into Source Code for details of the strict naming conventions required for these copybooks.
• Mocking and stubbing - For source code that may be difficult to test, you can control the flow of execution and if required, replace certain sections of code by using the mocking and stubbing functionality of the preprocessor; see Mocking and Stubbing Source Code.