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Many applications in the field of scientific computing - such as computational biology, computational linguistics, and others - depend on Machine Learning algorithms to provide important core functionality to support solutions in the particular problem domains. However, it is difficult to test such applications because often there is no "test oracle" to indicate what the correct output should...
Previous studies showed that adaptive random testing is an effective alternative to random testing method, but requires additional overheads to evenly spread test cases. Mirroring was introduced to reduce the overheads of adaptive random testing. This paper is the follow-up work to a previous study on the integration of mirroring and adaptive random testing, namely the mirror adaptive random testing...
Increased size and complexity of software requires better methods for different activities in the software development lifecycle. Quality assurance of software is primarily done by means of testing, an activity that faces constraints of both time and resources. Hence, there is need to test effectively within the constraints in order to maximize throughput i.e. rate of fault detection, coverage, etc...
Assuring that a program conforms to its specification is a key concern in software quality assurance. Although there is substantial tool support to check whether an implementation complies to its functional requirements, checking whether it conforms to its design remains as an almost completely manual activity. In this paper, we present the concept of design tests, which are test-like programs that...
Developers use unit testing to improve the quality of software systems. Current development tools for unit testing help with automating test execution, with reporting results, and with generating test stubs. However, they offer no aid for designing tests aimed specifically at exercising the effects of changes to a program. This paper describes a unit testing tool that leverages a change model to assist...
In the context of long-term, large-scale, industrial software development, process improvement and measurement to support process improvement is a necessity. Our software projects face the ongoing challenge, ldquoHow can we reduce the number of customer found defects in a cost-effective manner?rdquo This paper describes how the system test team of a large telecommunications company approached this...
Assessing the quality of tests for BPEL processes is a difficult task in projects following SOA principles. Since insufficient testing can lead to unforeseen defects that can be extremely costly in complex and mission critical environments, this problem needs to be addressed. By using formally defined test metrics that can be evaluated automatically by using an extension to the BPELUnit testing framework,...
With recent increased expectations for quality, and the growth of agile processes and test driven development, developers are expected to do more and more effective unit testing. Yet, our knowledge of when to use the various unit level test criteria is incomplete. The paper presents results from a comparison of four unit level software testing criteria. Mutation testing, prime path coverage, edge...
Data from projects worldwide show that many software projects fail and most are completed late or over budget. Unit testing is a simple but effective technique to improve software in terms of quality, flexibility, and time-to-market. A key idea of unit testing is that each piece of code needs its own tests and the best person to design those tests is the developer who wrote the software. However,...
Software products released into the field typically have some number of residual defects that either were not detected or could not have been detected during testing. This may be the result of flaws in the test cases themselves, incorrect assumptions made during the creation of test cases, or the infeasibility of testing the sheer number of possible configurations for a complex system; these defects...
Risk-based testing is an approach that consists of a set of activities regarding risk factors identification related to software requirements. Once identified, the risks are prioritized according to its likelihood and impact, and the test cases are projected based on the strategies for treatment of the identified risk factors. Then, test efforts are continuously adjusted according the risk monitoring...
Test case prioritization schedules the test cases in an order that increases the effectiveness in achieving some performance goals. One of the most important performance goals is the rate of fault detection. Test cases should run in an order that increases the possibility of fault detection and also that detects the most severe faults at the earliest in its testing life cycle. Test case prioritization...
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