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:
Jul. 21, 1998
Filed:
Apr. 30, 1997
Adam K Kolawa, Bradbury, CA (US);
Roman Salvador, LaJolla, CA (US);
Parasoft Corporation, Monrovia, CA (US);
Abstract
A method and system for generating a test suite for a computer program written in the JAVA programming language. The JAVA program comprises program statements and program variables represented as JAVA source code and compiled by a JAVA compiler into JAVA bytecodes, including at least one input statement having one or more input variables, that are grouped into code blocks and stored in a program database. The test suite comprises sets of inputs. Each of the sets of inputs corresponds to a pth in the program. The program statements corresponding to a candidate code block are read from the program database. Each of the input variables for each input statement and each of the program variables that depend on them are represented in symbolic form as a symbolic memory value and transforming each program statement dependent on such an input variable into a symbolic expression. A trial set of inputs for each of the input statements is created by finding a solution to the symbolic expression obtained using dynamic symbolic execution. The trial set of inputs are stored into the test suite if coverage of the candidate code block was obtained. A dynamic symbolic execution consists of a symbolic execution of the program performed along the path that corresponds to the trial set of actual inputs. The first input to the program is generated randomly. From that first input, inputs satisfying any coverage criteria can be obtained by performing the above procedure iteratively.