The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 1989
Filed:
Apr. 08, 1987
R Ralph Delucia, Valencia, PA (US);
Daniel J Wolf, Bethel Park, PA (US);
Eric P Casteel, N. Huntingdon, PA (US);
Westinghouse Electric Corp., Pittsburgh, PA (US);
Abstract
A computer program is verified, unit by unit, by automatically instrumentating the code and generating a test driver program which executes all branches of an instrumented code unit. The code is instrumented by operating processors to standardize the code format and to insert executable tracer statements into each block of reformatted code between control statements. A pseudocode having only control statements and tables identifying valid linkages between blocks of code are generated by another processor for use by a verifier in selecting values of input variables and expected outputs for test cases which execute each block of code in the selected unit. Another processor generates the test driver program from the test cases and a software test specification identifying the test cases and expected results. The test driver program and instrumented code unit are compiled and linked to repeatively execute the instrumented code unit to implement all the test cases. Results of the test cases are printed out indicating the sequence of block linkages generated by each test case, the expected output values and the actual output values.