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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
251

Software Quality Testing And Remedies

Chakraborty, Ashis Kumar 07 1900 (has links) (PDF)
No description available.
252

Testování aplikací s využitím nástroje Robot Framework / Application testing using Robot Framework

Mačurová, Kateřina January 2015 (has links)
This thesis deals with the methodology used for application testing, using the Robot Framework. Its main objective is to develop a methodology which describes an approach to automated testing using this tool. An important part of the methodology is to design a user guide for the Robot Framework - at the time of writing this thesis assignment, this guide does not exist in the Czech language. In this thesis the basic concepts and approaches to automation testing in accordance with defined objectives are explained. An integral part of this is the description of the Robot Framework, its architecture and tools used, libraries, other built-in tools and the syntax used for creating test cases.
253

Návrh uživatelského rozhraní a implementace aplikace pro vykonávání testů v nástroji TestLink / Design of user interface and implementation of application for test execution in TestLink

Skalický, Tomáš January 2015 (has links)
The goal of this thesis is to design a user interface and to implement an application that is used for test execution in test management tool TestLink. This application is designed to streamline and simplify the process of test execution in this tool. The theoretical part of the thesis describes features and the interface of TestLink and compares it with other similar tools. The practical part is focused on analysis, user interface design, and implementation of the application. The outcome of this thesis is in addition to the application itself also a library written in PHP, which is used for communication with the application programming interface of TestLink and which simplifies the creation of similar applications.
254

Optimalizace práce s nástrojem TestLink / Software testing workflow optimization with Testlink

Heřman, Marek January 2015 (has links)
The aim of this thesis is to describe the process of analysis and design in software testing, principles of using the test management tool TestLink and further in the practical part extend the possibilities of data import into this tool with the help of a newly created application. The theoretical part focuses on the use of test management systems in the area of analysis and design in software testing and the description of functionality and supported areas, including the current shortcomings of selected systems. The practical part is solved in collaboration with Tesena, s.r.o., a software testing company. The outcome of the thesis is an application enabling the import of test requirements, test cases with steps and test results from commonly used formats into the TestLink tool. The application focuses on the area of preparation of test cases and enables acceleration of the work process during test analysis and design; i.e. a problem which the company experiences when managing a large amount of tests, as the standard import is partially non-functional and relatively complex.
255

Lean software development v testovacím týmu / Lean software development in testing team

Chodura, Ondřej January 2012 (has links)
This diploma thesis describes the position of software testing according to Lean software development approach and its appliacation in testing team. At first. Lean concept is introduced with its basic principles, then the thesis focuses on the position of testing in the Lean software development itself. At the beginning this thesis deals with agile approach to development and software testing position in Lean software development. This concept defines several principles, which should be followed by testing teams. These principles and its general application in testing teams are subsequently explained. The second part is devoted to Lean software development in a real company. I am working as a tester and I already know the development and testing processes -- that's why one of my goals is to apply this approach to our testing team. Firstly the default situation in our company is introduced. Used technics and types of used testing tools are listed together with procedures and also the disadvantages and troubles, which occurred during the original testing process. Then the following parts are devoted to Lean software development principles application in our testing team followed with description of improvements and advantages delivered by the principles.
256

Analýza a optimalizace procesů testování SW na vybraném IT oddělení mezinárodní finanční instituce / Analysis and optimization of software testing processes at selected IT department of the international financial institution

Mrázek, Štěpán January 2014 (has links)
The topic of this thesis is an analysis of testing software processes for selected IT department in an international financial institution followed by subsequent optimization based on the identified deficiencies. The paper firstly describes the problem of software testing in general. Next part is about explanation of the concept and modeling of business processes. Second part of the thesis is about an examination of the selected development department. and it describes its applications and the present status of testing. Based on the deficiencies found during the analysis, there are described some proposals to increase effectivity of testing processes.
257

Estudo e definição de mecanismos para redução do custo de aplicação do teste de programas concorrentes / Study and design of mechanisms to reduce the cost of appying the test of concurrent programs

Mario Cesar da Cunha Machado 13 April 2011 (has links)
Programas concorrentes possuem características que os diferenciam de programas sequenciais, tornando a atividade de teste mais complexa. Questões como definição e uso de variáveis por diferentes processos, comunicação, sincronização e comportamento não-determinístico precisam ser consideradas. Apesar dos avanços obtidos nesse contexto, um problema que ainda persiste é o custo da atividade de teste, relacionado principalmente ao número excessivo de elementos requeridos a serem testados. Neste contexto, este trabalho apresenta duas propostas: a primeira estática, focando na detecção automática de elementos requeridos não-executáveis, para os critérios relacionados a sincronizações; e a segunda dinâmica, aplicando-se o teste de alcançabilidade para apoiar a avaliação da cobertura de sequências de sincronizações, desse modo, usando informações dinâmicas para apoiar o teste de cobertura. Estas propostas foram implementadas na ferramenta ValiMPI e um experimento foi realizado a fim de verificar a eficácia da proposta. Os resultados indicam que as duas propostas implementadas neste trabalho são promissoras e auxiliam a reduzir o custo da atividade de teste / Concurrent programs present new features, such as: nondeterminism, concurrency, synchronization and communication. These features need to be considered during testing activity, making this activity more complex. Despite the results achieved in this context, a problem that still remains is the application cost of the testing, especially the cost related to the high number of required elements generated by the test criteria proposed to concurrent programs. In this context, this work presents two contributions: the first one using a static approach, automatically detecting non-executable elements related to synchronization between process; and the second one using a dynamic approach, applying reachability testing to support the coverage evaluation of the executed sequences, reducing the number of executed sequences and the number of test cases. These contributions were implemented in the ValiMPI tool and experiments were conducted to evaluate them. The results indicate that these contributions can improve the concurrent program testing, reducing the application cost of the testing activity
258

Uma contribuição para determinação de um conjunto essencial de operadores de mutação no teste de programas C. / A contribution for the determination of a sufficient mutant operators set for C-program testing.

Ellen Francine Barbosa 06 November 1998 (has links)
Estudos empíricos têm mostrado que a Análise de Mutantes – um dos critérios de teste baseado em erros – é bastante eficaz em revelar a presença de erros. Entretanto, seu alto custo, decorrente principalmente do grande número de mutantes gerados, tem motivado a proposição de diversas abordagens alternativas para a sua aplicação. Um estudo relevante nesse sentido resultou na determinação de um conjunto essencial de operadores de mutação para a linguagem Fortran, mostrando-se que é possível reduzir o custo de aplicação do critério, preservando um alto grau de adequação em relação à Análise de Mutantes. Alguns estudos também têm demonstrado que a redução da eficácia não é significativa. Este trabalho tem como objetivo investigar alternativas pragmáticas para a aplicação do critério Análise de Mutantes e, nesse contexto, é proposto um procedimento para a determinação de um conjunto essencial de operadores de mutação para a linguagem C, a partir dos operadores implementados na ferramenta Proteum. Procurando aplicar e validar o procedimento proposto, dois grupos distintos de programas são utilizados. Para ambos os grupos, o conjunto essencial obtido apresenta resultados bastante significativos quanto à redução de custo, com um decréscimo muito pequeno no grau de adequação em relação à Análise de Mutantes. Estratégias para evoluir e refinar um conjunto essencial para diferentes domínios de aplicação também são investigadas. / Mutation Analysis – one of the error based criteria – has been found to be effective on revealing faults. However, its high cost, due to the high number of mutants created, has motivated the proposition of many alternative approaches for its application. In this perspective, a relevant study resulted on the determination of a sufficient mutant operator set for Fortran, indicating that it is possible to have a large cost reduction of mutation testing, preserving a high mutation score. Some studies have also shown that the reduction on the effectiveness is not significant. This work aims to investigate pragmatic alternatives for mutation analysis application and, in this context, a procedure for the determination of a sufficient mutant operators set for C is proposed, using Proteum testing tool. Aiming to apply and validate the proposed procedure, two different groups of programs are used. For both of them, the sufficient mutant operator set presents very significant results in terms of cost reduction, with a very small reduction on the mutation score. Strategies to evolve and refine an essential mutant operator set to different application domains are also investigated.
259

Geração automática de dados de teste para programas concorrrentes com meta-heurística / Automatic test data generation for concurrent programs with metaheuristic

José Dario Pintor da Silva 22 September 2014 (has links)
A programação concorrente é cada vez mais utilizada nos sistemas atuais com o objetivo de reduzir custos e obter maior eficiência no processamento. Com a importância da programação concorrente é imprescindível que programas que implementam esse paradigma apresentem boa qualidade e estejam livres de defeitos. Assim,diferentes técnicas e critérios de teste vêm sendo definidos para apoiar a validação de aplicações desenvolvidas nesse paradigma. Nesse contexto, a geração automática de dados de teste é importante, pois permite reduzir o custo na geração e seleção de dados relevantes. O uso de técnicas meta-heurísticas tem sido uma área de grande interesse entre os pesquisadores para geração de dados, pois essas técnicas apresentam abordagens aplicáveis a problemas complexos e de difícil solução. Considerando esse aspecto, este trabalho apresenta uma abordagem de geração automática de dados para o teste estrutural de programas concorrentes em MPI (Message Passing Interface). A meta-heurística usada foi Algoritmo Genético em que a busca é guiada por critérios de teste que consideram características implícitas de programas concorrentes. O desempenho da abordagem foi avaliado por meio da cobertura dos dados detestes, da eficácia em revelar defeitos e do custo de execução. Para comparação, a geração aleatória foi considerada. Os resultados indicaram que é promissor usar geração de dados de teste no contexto de programas concorrentes, com resultados interessantes em relação à eficácia e cobertura dos requisitos de teste. / Concurrent programming has been increasingly used in current systems in order to reduce costs and obtain higher processing efficiency and, consequently, it is expected that these systems have high quallity. Therefore, different techniques and testing criteria have been proposed aiming to support the verification and validation of the concurrent applications. In this context, the automated data test generation allows to reduce the testing costs during the generation and selection of data tests. Metaheuristic technique has been widely investigated to support the data test generation because this technique has presented good results to complex and costly problems. In this work, we present an approach to the automated data test generation for message passing concurrent programs in MPI (Message Passing Interface). The generation of data test is performed using the genetic algorithm metaheuristic technique, guiding by structural testing criteria. An experimental study was conducted to evaluate the proposed approach, analyzing the effectiveness and application cost. The results indicate that the genetic algorithm is a promising approach to automated test data generation for concurrent programs, presenting good results in relation to effectiveness and data test coverage.
260

Test orales for systems with complex outputs: the case of TTS systems / Oracles de teste para sistemas com saídas complexas - o caso dos sistemas TTS

Rafael Alves Paes de Oliveira 18 April 2017 (has links)
Software testing is one of the most important Software Engineering processes, being the primary activity to check the conformance between the software requirements and its actual behavior. The automation of software testing activities is essential to certify productivity and effectiveness in such activities. Test automation leads testing activities to be conducted under systematic and accurate criteria, raising the chance of testers to reveal faults or inconsistencies. Test oracles are elementary members in software testing automation, being the mechanism responsible for indicating the correctness of software outputs. In testing environments, test oracles can be effectively implemented based on several sources of information about the Software Under Testing (SUT): software specifications, assertions, formal methods (Finite State Machines (FSM), formal specifications, etc, machine-learning methods, and metamorphic relations. Regardless of the implementation strategy, test oracles are vulnerable to false positive/negative verdicts, configuring what the literature describes as the oracle problem. Therefore, test oracles are a non-trivial and challenging object of studies of the software engineering research area. SUTs outputs in unusual formats make it harder the oracle problem. Audio, images, three-dimensional objects, virtual reality environments, complex statistical compositions, etc, are examples of non-trivial output formats. In the software testing context, SUTs with unusual outputs can be called complex-output systems. In this doctorate dissertation, we propose and evaluate a novel test oracle approach for complex-output systems called feature-based test oracles. The purpose of feature-based test oracles is the appropriation of a processing image technique called Content-Based Image Retrieval (CBIR) to collect information from features extracted from the SUTs outputs to compose test oracles. Given a query image, CBIR combines feature extraction and similarity functions to alleviate the problem of searching for digital images in large databases. In previous research, we have integrated CBIR concepts in a testing framework to support the automation of testing activities in processing image systems and systems with Graphical User Interfaces (GUI). In this doctorate dissertation, we extended that framework and its concepts to general complex-output systems, addressing the feature-based test oracle approach. We use Text-To-Speech (TTS) systems to validate empirically our test oracle technique. Through the results of five empirical analyses, three of them conducted in line with problems of a real-world industry TTS system, show the proposed technique is a valuable instrument to automate testing activities and alleviate practitioners efforts on testing complex output systems. We conclude the proposed test oracles are effective because they systematically evaluate the SUTs sensorial output rather than produce verdicts based on subjective specifications. As future work, we plan to conduct investigations towards the reduction of false positives/negatives and the association of the test oracles with machine learning techniques and metamorphic relations. / Teste de Software é um dos processos mais importantes da Engenharia de Software, sendo a principal atividade para averiguar a conformidade de requisitos de software e suas saídas. A automatização das atividades de teste é essencial para conferir produtividade e efetividade em tais atividades. A automatização faz com que atividades de teste sejam conduzidas sob critérios sistemáticos e precisos, aumentando a chance dos testadores de revelarem falhas ou inconcistências. Oráculos de teste são membros elementares na automatização do teste de software, sendo o mecanismo responsável por indicar a corretude das saídas do softwre. Em ambientes de teste, oráculos de teste podem ser efetivamente implementados com base em diversos fontes de informação sobre o sistema em teste: especificações de software, assertivas, métodos formais (máquinas de estados finitas, especificações formais, etc), métodos de aprendizagem de máquina e relações metamórficas. Independente da estratégia de implementação, oráculos de teste são vulneráveis a veridictos de falsos positivos/negativos, configurando o que é apresentado na literatura como O problema do Oráculo. Então, na área de engenharia de software, oráculos de teste são objetos de estudo não-triviais e desafiadores. O problema de oráculo é potencializado quando as saídas do sistema em teste são dadas em formatos não triviais como, por exemplo, audio, imagens, objetos tridimensionais, ambientes de realidade virtual, composições estatísticas complexas, etc. No contexto do teste de software, sistemas com saídas não triviais podem ser chamados de sistemas com saídas complexas. Esta tese de doutorado propões e avalia uma nova estratégia de oráculo de teste para sistemas com saídas complexas. O propósito de tal estratégia é a apropriação da técnica de processamento de imagem conhecida como CBIR (Recuperação de Imagem Basead em Conteúdo CBIR) para coletar informações de características extratídas do sistema em teste, compondo oráculos de teste. A partir de uma imagem de busca, o CBIR combina extração de características e funções de similaridade para aliviar problemas de busca em grandes based de imagens digitais. Em pesquisas anteriores, conceitos de CBIR foram integrados em um arcabouço de teste para apoiar a automatização de atividades de teste em systemas de processamento de imagens e sistemas com interfaces gráficas. Esta tese de doutorado estende o arcabouço e seus conceitos para sistemas com saídas complexas em geral. Sistemas Texto-Fala (TTS) foram utlizados para validações empíricas. Os resultados de seis análises empíricas, duas delas condizidas em consonância com problemas de um TTS industrial, revelam que a técnica proposta é um valioso instrumento para automatizar atividaes de teste e aliviar esforços de profissionais da indústria ao teste sistemas com saídas complexas. Conclui-se que a efetividade dos oráculos de teste propostos são devido às sistemáticas análises do conteúdo das saídas dos sistemas em teste, em vez da análises de especificações subjetivas. Os trabalhos futuros vislumbrados devem ser conduzidos no intuito de reduzir número de falsos positivos/negativos e a associação dos oráculos de teste com técnicas de aprendizado de máquina e relações metamórficas.

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