• KIPS Transactions on Software and Data Engineering
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• v.6 no.8
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• pp.385-390
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• 2017

Because of the ever-increasing software complexity, model-based development techniques are becoming an essential technique in software development. However, even if model-based techniques are used, the test case generation for complex software is still a challenge to solve. In this paper, we propose a method to generate automatic test cases based on UML model using custom parser and SMT solver. By proposed technique, a test case can be generated even though the model is described in a platform independent language such as action language, or in a platform dependent language. In addition, a concolic execution technique is applied to efficiently generate test cases in the model. In this paper, we present a case study on the power window switch model of Hyundai Santa Fe through the proposed test case generation technique.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06b
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• pp.111-116
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• 2007

최근 업계에서는 테스트의 중요성이 대두되면서 테스트 활동에 대한 테스트 성숙도 모델 적용을 통해 테스트 프로세스의 지속적인 개선을 도모하고 있다. 하지만 기존의 모델들이 외국 기업의 소프트웨어 개발 환경을 기반으로 하고 있어 중소 규모의 소프트웨어 개발 업체에서 이를 적용하기에는 비용과 기간 면에서 어려움이 따른다. 또한 체계적인 심사방법을 제시하지 못하고 있어 성숙도 모델의 적용에 대한 평가가 어려운 실정이다. 본 논문에서는 심사의 객관성을 확보하는 동시에 심사 비용 및 기간을 축소할 수 있는 방안을 제시한다. 심사의 객관성 확보를 위해 심사 대상 문서의 연관관계 테이블과 활용 기록을 기준으로 문서 심사를 수행하도록 하였으며, 심사 기간과 비용을 줄이기 위해 검증(Verification) 활동 중심의 문서심사를 문서 활용도에 대한 심사로 대체하고 각종 검토 활동 및 교육 활동을 통폐합 하였다. 개선된 심사모델을 도입함으로써 심사 기간이 단축될 수 있으며, 정형화된 심사 지침서의 활용을 통해 객관성을 확보할 수 있는 효과를 기대할 수 있다.

• The KIPS Transactions:PartD
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• v.8D no.6
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• pp.843-852
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• 2001

Statistics concerning software errors indicate that more errors are introduced in analysis and design phase than implementation phase. Therefore, it is needed to check whether the design modeling is appropriate for own function and structure. This paper discussed the effective test method for the object-oriented design model, i.e., UML. A new method was proposed for generating test data. This method consists of category partition theory by the representation each element in UML model with OCL (Object Constraint Language). Test data generated in this way can be used for testing the source code functionality as well as for checking the design model.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.13 no.1
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• pp.129-134
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• 2013

Previous research is focus on testcase generation automation using message sequence diagram based on metamodel. but that research is not enough for testcase genaeration automation using state diagram based metamodel. so in this paper is adopt Model Driven Architecture (MDA) mechanism for using metamodel and model transformation. and we suggest testcase automation mechanism using state diagram in UML. we will decrease cost of embedded software design and testcase genaration and increase quality of embedded software using metamodel mechanism.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2002.11a
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• pp.473-479
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• 2002

NHPP에 근거한 SRGM을 구성하는 새로운 안을 제시한다. 본 논문의 주요 초점은 소프트웨어 신뢰도모델링에서 효과적인 파라미터분해기법을 제공하는 것이다. 이는 테스트노력과 결함검출비를 동시에 고려하는 것이다. 일반적으로, 소프트웨어결함검출/제거메카니즘은 이전의 검출/제거결함과 테스트노력을 어떻게 활용하느냐에 달려있다. 실제 현장 연구로부터 우리는 테스트노력소모패턴을 추론하여 FDR의 경향을 예측할 수 있을 것으로 생각된다. 결함검출이 증가, 감소 및 일정한 것 등 광범위에 걸쳐서 나타나는 경향을 잡아내는 고유의 융통성을 가지는 하나의 시변수집합인 FDR모델에 근거한 테스트노력을 개발하였다. 이 스킴은 구조에 융통성이 있어서 여러 가지 테스트노력을 고려하여 광범위한 소프트웨어 개발 환경을 모델화할 수 있다 본 논문에서는 FDR을 기술하고, 관련된 테스트 행위를 이러한 새로운 모델링접근법에 연합시킬 수 있다. 우리의 모델과 그리고 이것과 관련된 파라미터 분해기법을 적용한 것을 여러 가지 소프트웨어 프로젝트에서 도출한 실제 데이터집합을 통하여 시연한다. 분석결과에 의하면 SRGM에 관한 테스트노력과 FDR을 결합하기 위한 제안된 구조가 상당히 정확한 예측능력을 보여주고 있으며, 실제 수명상황을 좀더 정대하게 설명해 준다. 이 기법은 광범위한 소프트웨어시스템에 쓰일 수 있다.

• KIISE Transactions on Computing Practices
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• v.22 no.1
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• pp.32-37
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• 2016

In model-based testing using sequence diagrams, test cases are automatically derived from the sequence diagrams. For the generation of test cases, scenarios need to be found for representing as a sequence diagram, and to extract test paths satisfying the test coverage. However, it is hard to automatically extract test paths from the sequence diagram because a sequence diagram represents loop, opt, and alt information using CombinedFragments. To resolve this problem, we propose a transformation process that transforms a sequence diagram into an activity diagram which represents scenarios as a type of control flows. In addition, we generate test cases from the activity diagram by applying a test coverage concept. Finally, we present a case study for test cases generation from a sequence diagram.

• The KIPS Transactions:PartD
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• v.17D no.4
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• pp.283-296
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• 2010

Timing diagram is a useful tool for describing the specification of system, but there is no study for test case strategy of a timing diagram. To solve this problem, we followed the steps to generate test cases from timing diagram in this paper. 1) We defined a timing diagram formally. 2) We describe the method of transforming from a timing diagram model into a Stateflow model which has an equivalent relationship between a timing diagram model and a transformed Stateflow model. 3) We generated test cases from a transformed Stateflow model using SDV which is plugged in Simulink. To show that our approach is useful, we made an experiment with a surveillance model and arbitrary timing diagram models. In the experiment we transformed timing diagram models into Stateflow models, generated test cases from transformed Stateflow models using SDV, and analyzed the generation results. The conclusion that can be obtained from this study is that timing diagram is not only a specification tool but also a useful tool when users are trying to generate test cases based on model.

• Journal of Information Technology Application
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• v.3 no.3
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• pp.91-106
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• 2001

We propose a software-reliability growth model incoporating the amount of uniform and Weibull testing efforts during the software testing phase in this paper. The time-dependent behavior of testing effort is described by uniform and Weibull curves. Assuming that the error detection rate to the amount of testing effort spent during the testing phase is proportional to the current error content, the model is formulated by a nonhomogeneous Poisson process. Using this model the method the data analysis for software reliability measurement is developed. The optimum release time is determined by considering how the initial reliability R($\chi$ 0) would be. The conditions are ($R\chi$ 0)＞$R_{o}$ , $P_{o}$ ＞R($\chi$ 0)＞ $R_{o}$ $^{d}$ and R($\chi$ 0)＜$R_{o}$ $^{d}$ for uniform testing efforts. deal case is $P_{o}$ ＞($R\chi$ 0)＞ $R_{o}$ $^{d}$ Likewise, it is ($R\chi$ 0)$\geq$$R_{o}$ , $R_{o}$ ＞($R\chi$ 0)＞R(eqation omitted) and ($R\chi$ 0)＜R(eqation omitted)for Weibull testing efforts. Ideal case is $R_{o}$ ＞ R($\chi$ 0)＞ R(eqation omitted).

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.01a
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• pp.25-28
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• 2018

본 논문에서는 강화학습을 통한 게임 테스트 자동화를 제안한다. 게임 테스트의 일부가 게임을 플레이라는 것과 강화학습에 기반을 둔 인공 신경망 모델들이 게임플레이에 많은 성과를 거둔 것에 착안하여 테스트 케이스 자동 생셩 및 기계학습을 통한 테스트 자동화를 연구하였다. 테스트 관리자를 두어 게임 요소에 필수적인 테스트 케이스를 데이터 조합으로 생성하고, 테스트 케이스를 수행할 인공지능을 기계학습으로 작성하여 자동화 유지비용을 절감한다. 이 모델을 소형 게임에 시험적으로 적용하였고, 정상 작동을 확인하였다.

• KIPS Transactions on Software and Data Engineering
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• v.12 no.9
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• pp.381-386
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• 2023

Many existing test case generation researchers extract test cases from models. However, research on generating test cases from natural language requirements is required in practice. For this purpose, the combination of natural language analysis and requirements engineering is very necessary. However, Requirements analysis written in Korean is difficult due to the diverse meaning of sentence expressions. We research test case generation through natural language requirement definition analysis, C3Tree model, cause-effect graph, and decision table steps as one of the test case generation methods from Korean natural requirements. As an intermediate step, this paper generates test cases from C3Tree model-based decision tables using meta-modeling. This method has the advantage of being able to easily maintain the model-to-model and model-to-text transformation processes by modifying only the transformation rules. If an existing model is modified or a new model is added, only the model transformation rules can be maintained without changing the program algorithm. As a result of the evaluation, all combinations for the decision table were automatically generated as test cases.