International Business Machines Corporation

Tom C L Chen

Trong Truong

Michael S Fulton

Francisco Miguel Anaya

Steven Cooper

A test suite is executed to test a computer program for a plurality of variables. A variable value is generated for each variable of the plurality of variables at a predetermined location of the computer program. Whether a test included in the test suite is successful is determined. If the test is successful, the variable value is recorded as part of a success value set. If the test is not successful, the variable value is recorded as part of a failure value set. A confidence metric is calculated for the variable value. A relevance metric for each variable of the plurality of variables is measured, based on a Jaccard distance between the success value set and the failure value set. The failure value set, the success value set, the confidence metric for the variable value, and the relevance metric for each variable of the plurality of variables are presented.

Identifying incorrect variable values in software testing and development environments

For debugging an application in a production environment, a breakpoint is set in the application. Responsive to the setting, recording is begun of information about a processing of a request in the application. Reaching the breakpoint is detected in the application during the processing of the request. A replica of the application is created including the breakpoint, the application becoming a primary application and the replica becoming a secondary application in a production environment. In the secondary application, a debugging operation is performed during a processing of a copy of the request after the breakpoint in the secondary application.

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Tom C L Chen