Journal of Computer Sciences Institute

1-6

Authors: Dawid Majdanik, Adrian Madoń, Tomasz Szymczyk

This article is devoted to the comparison of the effectiveness of solutions used in automatic testing of web applications. In order to carry out the analysis, test scenarios were created and tests were carried out using each of the tested programming frameworks (Selenium WebDriver, Cucumber, Ranorex, Robot Framework, Cypress, Unified Functional Testing, TestComplete and Katalon Studio). The study showed that there is no single best tool that meets all the requirements. Taking into account the analyzed aspects of effectiveness, the TestComplete program was the best, however, when choosing a solution, the team's skills and project specification should be taken into account.

15-21

Authors: Piotr Mieszawski, Tomasz Szymczyk

The subject of this work is to evaluate the precision of the Kinect controller operation. Research study was performed and a measuring stand have been prepared. Then an application was created that captures the user's throw gesture and simulates the flight of a virtual ball. Based on this, measurements were made to determine the difference between hand movement and it’s detection by the application, and differences among throw made in real life and in VR. The analysis of these results allowed the accuracy of the controller to be assessed.

30-36

Authors: Vladyslav Shkuta, Marek Miłosz

This article describes the methods, approaches and technologies of information systems integration, compares the functionality of the selected tools for information systems integration from a selected point of view. In this case, it is an evaluation of the ability to perform the main functions of the Enterprice Service Bus and the resulting benefits.

42-48

Authors: Bartosz Miłosierny, Mariusz Dzieńkowski

The subject of the research was the comparative analysis of three frameworks for building web applications, i.e. Express, Hapi and Koa, operating in the Node.js ecosystem. An experiment was prepared consisting of a number of scenarios, during which the server response times to incoming requests from the client were measured. As part of the work, server test applications handling HTTP requests (GET, POST, PUT, DELETE) performing typical data operations were implemented. The applications contained the same functionalities and were built using the three tested frameworks. In individual scenarios, 1000 requests of a given type were sent from independent clients, the times of successive responses were measured and their averages were calculated. On the basis of the obtained results, Hapi and Koa frameworks for GET, POST, PUT, DELETE requests, operating on one object or a string "Hello World!" have achieved the best, although very similar, response times. In the case of the GET request, the Koa framework proved to be the best for higher loads, achieving response times approximately 20% better than the Express framework. For high loads, the Hapi framework achieved the worst results, reaching over 2 times longer response times than the Koa framework.

55-60

Authors: Jakub Machowski, Mariusz Dzieńkowski

The Raspberry Pi is a computer platform that is widely used in education, has a very large community and extensive documentation. Therefore, it can be a good and cheap alternative to a traditional computer, a TV streaming device or a console for less demanding games. In the case of observing a lower efficiency of the microcomputer, one of many possibilities of improvement, which this device offers is overclocking the processor. It is associated with a proper selection of parameters (voltage, clocking) and software in order to achieve the highest possible performance of the dedicated Raspbian system. However, increasing the work efficiency causes the temperature rise up to the limit values. Therefore, an appropriate, i.e. effective, kind of cooling should be applied. Taking all these circumstances into account, an experiment was developed in which temperature measurements were taken during the maximum processor load on all cores at the clock setting that enabled reaching the highest performance. During the research three cases were considered: without the use of cooling, with passive cooling and with active cooling. The results showed that only the use of active cooling clearly improves the operating conditions of the device, due to lowering the temperature by about 16°C compared to the situation without cooling or with the use of a passive radiator.