There can be different goals of the test case prioritization such as increasing reliability or performance of system, reducing cost per test case. Due to wide spread popularity of Object Oriented techniques in software-system development, most of the testing techniques are on code coverage.
Developer of system needs not to start from scratch, but by using Commercial-Off-The-Shelf COTS component he can integrate the whole system applying the glue code with component interface. CB technique provides us not fully but partial flexibility to define relative time measures at interaction of component, but it is out of focus of the paper here.
Hire Writer Component based system development offer great flexibility and improvements in large software systems development. Here, in this paper, I propose test case prioritization technique for component based system. State-based bugs are difficult to detect using traditional testing techniques.
A reusable component can be seen as a box, which contains the code and the documentation. Several empirical studies were also conducted to highlight the component integration issues and techniques in component integration testing process. Statements, functions, classes, relations, implementation logic are the most focused points when testing the OO-Systems.
Component-based software engineering CBSE shifts the emphasis from programming software to composing software systems. The root principals of the OO techniques are incorporating states and behaviour of the subject system.
Component can be a class, object, module or subsystem, which functions independently irrespective of the other component of the system, easing the development process of large complex software. Clancy produced generic testing process guidelines by his own experiments, based on working on NASA flight Softwares and proposed test process improvements for future missions.
Component based technology, a subset, special case of Object oriented technology views each logical particle of the software system as a unique component. Most of the COTS components are black box or glass-box in nature. New matrix called Dependency density of Component DDcomp is proposed and based on that proposed technique is described which is based on two prioritization factors namely: Method of Black box testing is most promising approach when testing the CB-Systems in such environment.
Coverage-based testing methods are by nature, white-box and, provides the details about which software part of the functionality has been covered. Integrator tests the functional aspect of subject component.
Fault severity is internal characteristic of component dependency. The real world behave as continuum.
In addition, his constant feedback, encouragement, guidance and support at every phase of writing this thesis from the initial to the final level enabled me to develop an in-depth understanding of the research area. The factors I am using are criticality of component and fault proneness of component.
All above techniques are code-based and white box in nature. Most of the COTS-components are black box in nature because of source code unavailability, which makes the testing process difficult in development leading to greater testing time and higher cost.
The greatest challenges in component-based software development are that suitable ready-made components are difficult to find, and if they are found, they are not necessarily of good quality. Korel  compared the drawback-benefit of both code-based and model-based testing techniques.
Examples relations are associations, inheritance, polymorphism, and uses, which most of the times, shadows the understating of why object are relates to each other. Same time, testing is the most time and resource consuming process in any software development.
In OO, measure of factors directly related to complexity and fault severity are used, where as in CBS we hardly have such measures, so we have to depend on the indirect measures such as fault proneness of component or complexity of integration.
The interface contains public methods, user documentation, requirements and restrictions of the component. Case study is provided to evaluate effectiveness of techniques.
As the dependency of component is higher, the component is more prone to fault. Those techniques are code based and difficult to apply in component based development environment. All above techniques are applicable to OO systems and, there is a lack of work on component based testing and test case prioritization techniques.
Many techniques were proposed in OO domain to prioritize the test cases for regression testing. There are also techniques based on historical test case performance data, and coverage of interaction.
In CB, testing, main focus is on interfaces, which are only external parts of components. In black box reuse, the reuse sees the interface, not the implementation of the component. Still, the lack of methods and techniques combining both techniques in a single domain create hurdles when testing the software.
In previous work, a number of techniques were proposed for testing component-based systems, among which most are code based or model based. System integrator has not any knowledge of logic or, implementation of component, making impossible to white-box test the component.
System Integration tester uses integration testing and system testing methods to find the faults.
Test case prioritization techniques proved important to reduce test case cost and to improve reliability.Of course white-box test case prioritization techniques may be inapplicable, for example, where source code is un- available, or instrumentation is impossible, so a.
Requirements-Based Test Case Prioritization Hema Srikanth Department of Computer Science, North Carolina State University, NC [email protected] "Requirement-Based Automated Black-Box Test Generation," 25th Annual Int'l Computer Software and Applications Conference, Chicago, Illinois, Test case prioritization is an effective and practical technique that helps to increase the rate of regression fault detection when software evolves.
Numerous techniques have been reported in the literature on prioritizing test cases for regression testing.
Abstract: Test case prioritization is an effective and practical technique that helps to increase the rate of regression fault detection when software evolves.
Numerous techniques have been reported in the literature on prioritizing test cases for regression testing. However, existing prioritization.
BLACK BOX WARNINGS Introduction: A "black box" warning is the most serious warning in prescription drug labeling. The manufacturers of certain antidepressants have already changed the product labeling to warn about a possible increased risk of suicidality with these drugs.
Test case prioritization is an effective and practical technique that helps to increase the rate of regression fault detection when software evolves.Download