PROBLEM TO BE SOLVED: To provide means which automatically generates test data from an operation log in an actual environment, and easily performs a comparative test on difference between output results of new and old versions of a program.;SOLUTION: In a system for a comparative test, an operation log in an actual environment where an old version of a program is operated is recorded, and a new/old version input/output item table defining input/output items via operation screens of new and old versions of the program is used to generate test data from the operation log. The generated test data are inputted to test environments to which the new and old versions of the programs are applied, respectively, to automatically execute a test, and test results are acquired from new and old test environments, respectively. The new/old version input/output item table is used again to extract comparison items from the test results, and a difference between the test results of the old and new versions is extracted and is outputted to a difference comparison result table.;COPYRIGHT: (C)2013,JPO&INPIT
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