A testing strategy for abstract classes

Clarke, Peter J.; Power, James F.; Babich, Djuradj; King, Tariq M.

doi:10.1002/stvr.429

Cited by 7 publications

(7 citation statements)

References 19 publications

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“…Thus, for the preliminary reliability analysis of the designed application, Equation (3) was considered to be adequate and hence applied. When the failure rate is constant, the reliability function can be expressed exponentially in terms of time t and failure rate θ (18) : …”

Section: Methodsmentioning

confidence: 99%

Remote operation and monitoring of a micro aero gas turbine

et al. 2017

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Internet applications have been extended to various aspects of everyday life and offer services of high reliability and security at relatively low cost. This project presents the design of a reliable, safe and secure software system for real time remote operation and monitoring of an aero gas turbine with utilisation of existing internet technology, whilst the gas turbine is installed in a remote test facility This project introduces a capability that allows remote and flexible operation of an aero gas turbine throughout the whole operational envelope, as required by the user at low cost, by exploiting the available Internet technology. Remote operation of the gas turbine can be combined with other remote Internet applications to provide very powerful gas turbine performance simulation experimental platforms and real time performance monitoring tools, whilst keeping the implementation cost at low levels. The gas turbine used in this experiment is an AMT Netherlands Olympus micro gas turbine and a spiral model approach was applied for the software. The whole process was driven by risk mitigation. The outcome is a fully functional software application that enables remote operation of the micro gas turbine whilst constantly monitors the performance of the engine according to basic gas turbine control theory. The application is very flexible, as it runs with no local installation requirements and includes provisions for expansion and collaboration with other online performance simulation and diagnostic tools.

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Section: Methodsmentioning

confidence: 99%

Remote operation and monitoring of a micro aero gas turbine

et al. 2017

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“…Testing abstract classes is not paid much attention to in the literature [4]. The inability to instantiate objects of an abstract class is mentioned as a reason, thereby preventing them from being executed at runtime [4].…”

Section: Related Workmentioning

confidence: 99%

“…Clarke et al [4] gives general advice about the minimal set of test cases that should be used, for instance, that in the case of a concrete method that references abstract methods, there should be a test case for each class that implements such an abstract method. No attention is given to how one ensures that the right tests are developed.…”

Section: Related Workmentioning

confidence: 99%

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Template Method test pattern

Bijlsma

Passier

Pootjes

et al. 2018

Information Processing Letters

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How to test abstract classes is an area of testing that is not paid much attention to. Abstract classes cannot be instantiated and therefore standard executionbased test strategies are not applicable. In this paper, we consider a special case of an abstract class, namely one produced by the Template Method pattern. This pattern results in an abstract class, with a concrete template method and one or more abstract primitive operations, and one or more subclasses, implementing the primitive operations specifically for each subclass. How should we test an instance of the Template Method pattern? Testing the concrete template method by testing the abstract class is impossible. Testing an instance of the Template Method pattern by testing the template method in all of the subclasses individually is error-prone in the long run. This paper presents a structured approach to test instances of the Template Method pattern in an elegant way using the Abstract Factory pattern. Furthermore, we introduce the new concept semi-abstract method to reason about concrete methods that depend on abstract operations. We formalize the pattern and demonstrate the approach at work using an example program.

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“…However, for the CITO problem, most existing solutions ignored the influence of abstract classes or polymorphism. That is, they did not consider the influence of either abstract classes or polymorphism . On one hand, abstract classes cannot be instantiated, making some testing levels infeasible .…”

Section: Introductionmentioning

confidence: 99%

An approach of class integration test order determination based on test levels

Zhang

Jiang

Yuan

et al. 2014

Softw. Pract. Exper.

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In recent years, many approaches have been developed to determine the order of tested classes in interclass integration test. However, existing approaches are inaccurate, as they ignore the influence of abstract classes and polymorphism. In this paper, we propose a test-level-based approach to deal with class-integration-test order, in which both abstract classes and polymorphism are taken into account. First, based on interclass dependence analysis, we develop an edge-removing algorithm to eliminate cycles caused by static and dynamic dependencies, taking abstract classes and polymorphism into account. Then, after eliminating cycles, we propose a class-integration-test order algorithm based on test levels, including static and dynamic test levels. In this algorithm, we take into account the fact of some test levels infeasible caused by the characteristic of abstract classes that they cannot be instantiated and offer corresponding adjustment strategy. Finally, we design and implement a test level order generator. The experimental results show that the proposed strategy needs less test stubs than the most typically graph-based approaches.

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A testing strategy for abstract classes

Cited by 7 publications

References 19 publications

Remote operation and monitoring of a micro aero gas turbine

Remote operation and monitoring of a micro aero gas turbine

Template Method test pattern

An approach of class integration test order determination based on test levels

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