1. A computer program product embodied in a computer readable storage medium, wherein the medium does not include a propagating signal, for supporting creation of source code including a plurality of routines described in a program, using a plurality of test cases defining a plurality of respective tests to be executed to check conformity of software to requirements, the computer program product comprising the programming instructions for: a test case execution step of executing one or more specific test cases selected from the plurality of test cases or causing the specific test cases to be executed; and a test result output step of adding a test result of a test case executed or caused to be executed in the test case execution step to the source code.