V model in testing, DOT NET Programming

What is V model in testing?

The V model map's the type of test to the stage of development in the project.

1495_v model.png

Figure: - V Model

1) Unit Testing:

The Starting from the bottom to the first test level is "Unit Testing". It includes checking that each feature specified in the "Component Design" has been implemented in the component.

In the theory an independent tester should do this, but in practice the developer usually does it, since they are the only people who understand how a component works. The main problem with a component is that it performs only a small section of the functionality of a system, and it relies on co-operating with other parts of the system, that may not have been built yet. To overcome this, the developers either builds, or uses the special software to trick the component into believe it is working in a fully functional system.

2) Integration Testing:

As the components are constructed & tested they are then linked together to check if they work with each other. It is a fact that 2 components that have passed all their tests, if connected to each other produce one new component full of faults. These tests can be completed by developers, or by the specialists.

The Integration Testing is not focused on what the components are doing but on how they communicate with each other, as specified in "System Design". The "System Design" defines a relationship between all components.

The tests are organized to check that all the interfaces, until all the components have been built and interfaced to each other producing the entire system.

3) System Testing

Once the whole system has been built then it has to be tested against the "System Specification" to check if it delivers the features needed. It is still developer focused, although specialist developers termed as systems testers are generally employed to do it.

In the essence System Testing is not about checking the individual parts of the design, but about checking the system as a whole. In fact it is one of the giant components.

The System testing can include a number of specialist types of test to see if all the functional and non-functional requirements have been met. In addition to functional requirements these may involve the following types of testing for the non-functional requirements:

  • Performance - Are the performance criteria met?
  • Volume - Can large volumes of the information be handled?
  • Stress - Can peak volumes of the information be handled?
  • Documentation - Is the documentation usable for system?
  • Robustness - Does the system remain stable under adverse circumstances?

4) Acceptance Testing:

The Acceptance Testing checks the system against the "Requirements". It is same to systems testing in that the entire system is checked but the main difference is the change in focus:

The Systems testing checks that the system which was specified has been delivered. The Acceptance Testing checks that the system will deliver what was requested.

The customer must always do acceptance testing and not the developer. The customer always knows what is required from the system to achieve value in the business and is the only person qualified to make that judgment. The testing is more of getting the answer for whether the software delivered as defined by the customer. It is like getting a green flag from the customer that the software is up to the expectation and ready to be used.

Posted Date: 9/25/2012 1:39:13 AM | Location : United States

Related Discussions:- V model in testing, Assignment Help, Ask Question on V model in testing, Get Answer, Expert's Help, V model in testing Discussions

Write discussion on V model in testing
Your posts are moderated
Related Questions
Question: (a) One problem encountered when designing web applications is that HTTP is a "stateless" protocol. Explain two general approaches to solve the statelessness problem

Why isn''t there an allowed amount for nonfacility for code 27405?

to design a grid view and edit and delete the data

What is the use of a .disco file? A client application uses a .disco file to locate or discover the documents that have the description of a Web service. The .disco file having

What is RAID and how does it work? The Redundant Array of Independent Disks (RAID) is a term used for describing the technique of improving data availability through the use of

Project Description: Overview: Prepare Windows program that runs in the background and on start up on the client's computer that grabs CERTAIN data from a.SDF file (SQL Serve

Program of Nested Loop - C# Program I am a learner of C# language and i am struggling with the Loops in c#. Can you have any code examples for this.

Explain Component diagrams Package: - The Package logically make group of element of a UML model. Component: - It is the actual physical module or implementation of

What is denormalization? The Denormalization is the process of putting one fact in numerous places (i.e. the vice-versa of normalization). Only one valid reason exists for deno

I need Online Slot Video Game For A Facebook Project Description: Prepare an online slot video game for a Face book promotion in order to attract new visits and Increase the