Testing the reliability of an application usually requires a good usage model that accurately captures the likely sequences of inputs that the application will receive from the environment. The models being used in the literature are mostly based on Markov chains. They are used to generate test cases that are statistically close to what the applica-tion is expected to receive when in production. In this thesis, we propose a model for reli-ability testing that is created directly from the log file of a web application. Our proposed model is also based on Markov chains and has two components: one component, based on a modified tree, captures the most frequent behaviors, while the other component is another Markov chain that captures infrequent behaviors. The result is a statistically cor-rect model that shows clearly what most users do on the site. The thesis also presents an evaluation method for estimating the accuracy of vari-ous reliability-testing usage models. The method is based on comparison between ob-served users’ traces and traces inferred from the usage model. Our method gauges the accuracy of the reliability-testing usage model by calculating the sum of goodness-of-fit values of each traces and scaling the result between 0 and 1. Finally, we present an experimental study on the log of a real web site and discuss the way to use proposed usage model to generate test sequences, as well as strength and weakness of the model for reliability testing.

A business process is a defined collection of linked structured tasks, activities, and decisions performed together to produce a desired set of results in order to achieve business goals on behalf of the organization. Companies are increasingly moving their business processes online using Business Process Management (BPM) tools and technologies. With BPM, online business processes are defined by an explicit business process model that flexibly combines and orchestrates forms delivered through a web browser to integrate tasks performed by people, and web services accessible through Internet protocols to integrate tasks performed by software. Often the approach to quality assurance for online business processes is similar to what would be done with any other web application. This is insufficient since it only provides rudimentary verification of single user behavior whereas the orchestration of tasks across many users and software systems can be quite complex. As well, a simple web application testing approach does not leverage the defined model for a business process to ensure consistency, completeness and enable automation. Nor will such an approach validate that a business process is contributing towards the achievement of business goals. A more systematic approach is required. This thesis proposes a quality assurance framework to provide a repeatable, systematic, cost-efficient approach to quality assurance for BPM. A prototype framework was implemented and evaluated using two case studies, including one case study that was developed in collaboration with a local hospital to support a business process for cancer care assessment.

Rich Internet Applications (RIAs) are a new generation of web applications that break away from the concepts on which traditional web applications are based. RIAs are more interactive and responsive than traditional web applications since RIAs allow client-side scripting (such as JavaScript) and asynchronous communication with the server (using AJAX). Although these are improvements in terms of user-friendliness, there is a big impact on our ability to automatically explore (crawl) these applications. Traditional crawling algorithms are not sufficient for crawling RIAs. We should be able to crawl RIAs in order to be able to search their content and build their models for various purposes such as reverse-engineering, detecting security vulnerabilities, assessing usability, and applying model-based testing techniques. One important problem is designing efficient crawling strategies for RIAs. It seems possible to design crawling strategies more efficient than the standard crawling strategies, the Breadth-First and the Depth-First. In this thesis, we explore the possibilities of designing efficient crawling strategies. We use a general approach that we called Model-based Crawling and present two crawling strategies that are designed using this approach. We show by experimental results that model-based crawling strategies are more efficient than the standard strategies.

This paper examines the process of Operations Acceptance Management, whose main task is to control Operations Acceptance Tests (OAT). In the first part the author focuses on the theoretical ground for the problem in the context of ITSM best practices framework ITIL. Benefits, process pitfalls and possibilities for automation are discussed in this part. The second part contains a case study of DHL IT Services (Prague), where a solution optimizing the overall workflow was implemented using simple web applications. The author of this paper was personally involved in the described project.

The topic of the thesis is issue of security during the application development. The main emphasis is being placed on web applications. The goal is to define a framework for managing the life cycle of applications to meet the security minimum. The objectives of the work are achieved by study of available resources and their subsequent analysis. The target audiences are software developers interested in learning more about how to create secure applications. The work describes the areas that are crucial for security of applications. Work contains security standards which we can use for defining security requirements of applications. Furthermore, there are mentioned the most serious security vulnerabilities and ways how to avoid them. It describes issue of security testing as an important tool for verifying security. The main part of work is the chapter dealing with the way how to include the issue of security throughout the application life cycle.

The thesis describes the Meteor Platform and the process of real-time web application design and development. The objective is to provide information covering the technology behind real-time web applications and to describe the Meteor application design and development process utilizing the MMSP methodology. First part of the thesis defines what a real-time web application is and describes Node.js platform and javascript frameworks Mojito, Derby and Meteor. The second part deals with Meteor application design and development process and provides information about used architecture and components. The last chapter provides recommendation on Meteor application development and suitability of the framework for various types of applications, as well as utilization of the MMSP methodology for Meteor application development. The main output and benefit of the thesis is the real-time web application Chute Achiever, which can be used for educational purposes. This thesis is the first academic work about Meteor platform published at the University of Economics.

Master thesis deals with a comparison of two web application frameworks in PHP. The aim of this work is to provide a comprehensive view of the possibilities, differences and advantages of the selected frameworks. The main source for comparison is sample web applications that demonstrate these possibilities. For a comprehensive comparison, various criteria were chosen to analyze the properties of frameworks. These criteria are divided into five categories. Technology support examines the compatibility of framework for different versions of the platform. The most important and most widespread category is the analysis of options for creation of web applications, which discusses the most common tasks in developing applications and how frameworks approaches it. Other categories are design and architecture of framework, testing and general support for developers, which analyzes both online and offline sources of information used to learn and solve problems using the selected framework . Comparison results based on above mentioned criteria can help developers when choosing a modern web development framework for PHP platform.

This thesis deals with the quality assurance of software developed within a small business and also it covers software testing as a means for checking the quality of software. The goal of this thesis is to reveal weaknesses in quality assurance of software developed with particular small business and weaknesses in quality of developed software itself. The real benefit of this thesis is to provide solution to discovered weaknesses by defining appropriate activities and tools of software quality assurance. The main purpose of these suggested activities is to improve the product quality to fulfill the expectations of users and developers. At first, it is necessary to determine the factors influencing the quality of the software and the causes leading to a decline in quality. This issue, together with the theoretical bases of software quality assurance is covered in the first part of thesis. The current state of quality assurance in the company is analyzed in the second part of the thesis. Appropriate measures, activities and tools that will help improve the software quality, are recommended based on the results of this analysis in the final section of this thesis.

This master's thesis is based on automated web applications testing with freeware instrument utilization developed under Google code project. It is called Selenium webdriver and become very popular during last years. Selenium webdriver is frequently used for web pages automation. Indisputable advantages of this solution are low entry cost, selenium is broadly used and also live community around that instrument with many useful informations. Main goal of this thesis is creation of automation framework created by Java programming language. This final framework will integrate Selenium webdriver and guarantee easy creation of testing scenarios. Because of this goal is placed mainly on separation of web page programmatic description and description of testing scenario.

The existing advanced web browsers in today’s mobile phones open up the door for mobile web applications. By using standard webtechnologies, a web page can be crafted to mimic the behavior of a normal application. The purpose of this master’s thesis has been to look at web application development for mobile phones in general and to implement a web-based Mobile TV client to determine whether it would be a viable alternative to existing clients based on other technologies. The advantages are the same as for any other web application: 1) the user avoids the hassle of installing an application and will always run the latest version, 2) developers benefit from the browser’s ability to render generic content, and 3) it is believed that the differences between browser implementations are less than in other environments in which an application would run, for example Java or operating system specificenvironments. / De avancerade webbläsare som redan idag finns tillgängliga på nyare mobiltelefoner har gjort det möjligt att skapa mobila webbapplikationer. Genom användandet av befintlig webbteknik kan en webbsida utformas på ett sådant sätt att den uppträder som en vanlig applikation. Syftet med det här examensarbetet har varit att titta på webbutveckling för mobiltelefoner i allmänhet samt att implementera en webbaserad MobilTV-klient för att avgöra hurivida en sådan lösning skulle kunna utgöra ett alternativ till redan existerande klienter baserade på andra teknologier. Fördelarna antas vara desamma som för andra webbapplikationer: 1) användaren slipper installera ett program och kommer alltid att köra den senaste versionen, 2) utvecklingen gynnas av webbläsarens förmåga att rendera godtyckligt innehåll och 3) skillnaderna mellan olika webbläsarimplementationer anses vara mindre i jämförelse med andra miljöer i vilka en applikation körs, till exempel Java- eller operativsystemspecifika.