In the natural world, laws of evolutionary biology such as selection, cross-breeding and mutation ensure that plants and living beings adapt to changed environmental conditions, thus securing the survival of species. How these laws can be utilized to improve software quality will be demonstrated by Fraunhofer FIRST researchers at the 2009 embedded world conference (Hall 11, Stand 11-101) from 3 to 5 March.
Software testing consists of many individual test cases, which check specific aspects of the system under test. Crucial to the success of the software testing is the quality of these individual test cases. In the European project EvoTest, Fraunhofer FIRST is cooperating with industrial and research partners to develop software that automatically generates test cases for software testing. Instead of the test cases being generated randomly, selection, mutation and recombination are used to ensure their optimal adaptation to the respective test objective. This increases the efficiency of the ever more extensive test phase.
Combining Quantity with Quality
Test cases are usually generated manually or randomly. The former method is very time-consuming and therefore cost-intensive. The latter method involves generating and executing a very large number of test cases in order to test a reasonably acceptable portion of the software code. EvoTest now enables high-quality test cases to be automatically generated, executed and evaluated.
As with any systematic test process, users of EvoTest must begin by defining a test objective. An appropriate fitness function must then be defined, which evaluates the quality of the individual test cases with respect to the test objective. It begins by analyzing the initial population of test cases, to borrow a term from evolutionary biology. These are already existing test cases, which were generated manually, for example. If the defined test objective is already attained with the first generation, the evolutionary process is ended. Otherwise, individual test cases are selected, slightly altered or combined with each other. As in the theory of evolution, these processes are termed selection, mutation and recombination. The second generation is then re-subjected to the fitness evaluation, and the rest of the process proceeds as in the first round. With each repetition, a new generation of test cases is created that gets closer to attaining the test objective.
EvoTest can be deployed, for example, in hardware-in-the-loop test environments for safety-relevant embedded systems, for controllers' C code as well as for testing desktop software. The software can be integrated into all existing test systems. There is no need to discard established test methods; the new method improves them and makes them more efficient.
EvoTest is funded by the European Union as part of its 6th Framework Programme for Research and Technological Development. The project, which is headed by the Instituto Tecnológico de Informática in Valencia, Spain, brings together eight industrial and research partners. The three-year project ends in September 2009.
At the embedded world conference, Fraunhofer FIRST will also be demonstrating the benefits of specification-based testing. For more detailed information, please visit: http://www.first.fraunhofer.de/veranstaltung/embeddedworld09
We will be glad to provide graphic material and an infographic on request. Further information is available from:Mitra Motakef-Tratar
Mirjam Kaplow | Fraunhofer Gesellschaft
Quantum bugs, meet your new swatter
20.08.2018 | Rice University
Metamolds: Molding a mold
20.08.2018 | Institute of Science and Technology Austria
There are currently great hopes for solid-state batteries. They contain no liquid parts that could leak or catch fire. For this reason, they do not require cooling and are considered to be much safer, more reliable, and longer lasting than traditional lithium-ion batteries. Jülich scientists have now introduced a new concept that allows currents up to ten times greater during charging and discharging than previously described in the literature. The improvement was achieved by a “clever” choice of materials with a focus on consistently good compatibility. All components were made from phosphate compounds, which are well matched both chemically and mechanically.
The low current is considered one of the biggest hurdles in the development of solid-state batteries. It is the reason why the batteries take a relatively long...
New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference
Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
17.08.2018 | Event News
08.08.2018 | Event News
27.07.2018 | Event News
20.08.2018 | Information Technology
20.08.2018 | Life Sciences
20.08.2018 | Information Technology