Automatic software testing tool
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United States of America Patent
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May 19, 1998
Grant Date -
N/A
app pub date -
May 30, 1996
filing date -
May 30, 1996
priority date (Note) -
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Abstract
A method of testing a software module using a genetic algorithm to generate a best test script is provided. The software module has a number of possible states. A set of state machines is created which represent a definition for either a user interface or an application program interface (API) of the software module in terms of the possible states. From the state machines, a set of test cases is automatically generated, such that each test case consists of code for manipulating the user interface or API. A genetic algorithm creates populations of test scripts from the test cases, in which each test script includes a number of test cases. Each test script from each successive generation of test scripts is executed by applying the script as input to the software module. A code coverage analyzer provides a measure of code coverage to the genetic algorithm for each test script. The genetic algorithm uses the measure of code coverage as a fitness value in generating future populations of test scripts and in determining a best script.
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