the system needs to keeping a steady state and will always adjust itself or adapt to try to maintain that steady state; and
As waterfall model has many advantages it is carrying a lot of disadvantages. It is hard to make changes after testing the stage. Once an application is in the testing stage, it is very difficult to go back and change something that was not well-thought out in the concept stage. The software never work tile the few last steps and it is very hard to identify the errors at the beginning. It is gambling operation to make a software and successful of the software is unknown. It is not suitable for a large complex project.
\label{s:test} There are many issues that were faced during testing of the module. Following are the issues faced, test strategy used and the solutions that were implemented to remove them. The testing in this thesis can be divided into three parts, which are:
subsystems and then tested because the interactions between the subsystems are critical for the system
As testing effort can’t be ignores, testing factors have to be considered. They have been addressed in [54],which showed testing from two dimensions: testing level and testing
Test Plan: The software is tested using two levels of testing viz. black box testing and white box testing. White box testing could be carried out in three different phases viz. unit testing system/integration testing and validation testing. • Unit Testing: Unit testing, also known as Module Testing, focuses verification efforts on the module. The module is tested separately and this is carried out at the programming stage itself.Unit Test comprises of the set of tests performed by an individual programmer before integration of the unit into the system. Unit test focuses on the smallest unit of software design- the software component or module. Using component level design, important control paths are tested to uncover errors within the boundary of the module. Unit test is white box oriented and the step can be conducted in parallel for
Testing of the entire system will be performed to verify that all parts and counterparts are functional. This is the testing that is made prior to release. Tests performed in this stage verify for the following:
This article by Phillip A. Laplante and Colin J. Neill of Penn State University explores the rumors of the demise of the waterfall model. The Waterfall process model progresses software products linearly from conception, through requirements, design, code, and test (Neill, 2004). The Waterfall method was developed in 1970 by Winston Royce when computer systems were monolithic, number-crunching entities with rudimentary front ends and users’ needs were filtered through the partisan minds of the computer illuminati building the systems (Neill, 2004). Most systems built in that time did not pay much attention to input from stakeholders, which is a good environment for the Waterfall method to work in – an environment where requirements seldom change after specification due to the fact that users are not involved in the development and therefore cannot provide feedback regarding incorrect assumptions or missing features (Neill, 2004).
If it performs well they move on to the next stage to refine and tweak it for the final product. However if there we some problems they would have to identify it and fix it so that it functions properly. This method is something that all engineers use and will be a key aspect in my field so I had better get used to using it.
In the end, each part would be subjected into multiple iterations and all these iterations will make a new module or will improve its existing module. This module would be integrated into a structure that would be tested at the end of the test cycle.
Testing is the next phase of the implementation phase. A comprehensive testing program includes a stepwise process starting with unit testing, followed by testing of group components called integration testing and concluded with entire systems test (Satzinger et al., 2004, p. 640). Individual units or modules are tested prior to integration with more advanced modules, using driver modules. Once a set of modules are put together, integration testing can take place. These test include checking for interface compatibility, run-time exceptions, parameter values and unexpected state interactions (Satzinger et al., p. 644-645). Jeff Theobald suggests that an effort should be made to concentrate not on just errors in a single application or module, but also the system as a whole and between systems (Theobald, 2007). After these tests are completed, the project goes on to system testing. System testing often involves daily “build and smoke” tests, where the system is set to run and is observed for “smoke” or errors (McConnell, 1996). The TPI credentialing system was tested in this manner. The project made it through the first two testing
consuming method, however this concern can easily be assuaged by splitting up the process into
situations. The reason for doing this is that we can have the ability to reuse an
Studying the module laboratory research methods I have had 8 practical’s which all required experimental techniques and analytical techniques in order to acquire, develop techniques in order to be applied to the root of such work.