How does Unit Testing work with RCP and/or schema files?

Running your DataStage job in MettleCI’s Unit Test Interception mode will actually replace your input and output template data files with files containing the data (and, necessarily, the metadata) of the data MettleCI encountered at runtime. If your job uses multiple invocations with different schema files named as parameters at runtime then each invocation will be created as a different test case, with different associated data files.