PURPOSE: To prepare a module for test so as to independently execute a test while integrating a program to be tested at a source code level.

CONSTITUTION: When specification 1 of the program to be tested is applied, the main body of the program to be tested is generated by a program generating means 3. In this case, concerning each function, the name of the function on the specification 1 and the name on the main body of the program to be tested are preserved in a function name table 4. When the test is executed and the relevant function is called, an execution control part is prepared, a communication part is prepared for outputting the executed result to the outside, and a module 6 for test is prepared.