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Slide 1 - These include managing with a phased life-cycle plan, continuous validation, rigorous product control, current programming approaches, explicit accountability for results, better and fewer personnel, and maintaining a commitment to process improvement. The 7 Principles are as follows: It is impossible to do exhaustive testing Yes! Testing in its whole is not feasible. Instead, we require the ideal quantity of testing depending on the application's risk assessment. And how do you assess this risk is the million-dollar question. Let's perform an exercise to address this. Which operation, in your opinion, increases the risk that your operating system will malfunction? I'm confident that the majority of you guessed, opening ten distinct applications at once. Therefore, if you were testing this Operating System, you would know that multitasking activities are where problems are likely to be identified and need to be carefully examined, which takes us to our next premise. Problem Clustering
Slide 2 - Error Clustering: Defect According to clustering, only a few modules are home to the majority of the faults found. The Pareto Principle is used to software testing in this way: around 20% of the modules contain 80% of the faults. Experience allows you to recognise such dangerous modules. However, this strategy has its own issues. Repeating the same tests over and over again will ultimately stop producing fresh bug findings. 3) The Pesticide Paradox Insects will eventually get resistant to the pesticide if the same pesticide mixture is used repeatedly to kill them during farming, rendering the chemical ineffective. Software testing follows the same rules. If the same series of tests are repeated repeatedly, the approach will be ineffective for identifying new flaws. This can be avoided by periodically reviewing and revising the test cases and introducing new and varied test cases to help uncover more flaws. Testers cannot solely rely on currently used test methodologies. In order to make testing more efficient, he must always search for ways to improve the current approaches. But you can never say your product is bug-free, despite all the sweat and effort you put into testing. Check out this video of Windows 98's official launch to prove my thesis.
Slide 3 - Do you really believe a firm the size of Microsoft wouldn't have adequately tested their operating system and would risk their image simply to see it fail during a public launch? Testing reveals that there are flaws. Therefore, the testing principle asserts that: speaks only about the presence of flaws and not about their absence. Software testing, for example, lowers the likelihood that unknown flaws will still be present in the software, but even the absence of flaws is not evidence of accuracy. But what if you put in extra effort, take all necessary safety measures, and produce software that is 99% bug-free? Additionally, the software does not satisfy the clients' demands & requirements. This brings us to our final principle, which is that error must not exist. The fallacy of absence of error Software that is 99% bug-free might nevertheless not work properly. This may occur if the system is rigorously evaluated for the incorrect requirement. Software testing involves more than just looking for flaws. The needs of the business are met by that software. Finding and repairing errors will not help if the system build is inoperable and fails to meet the demands and requirements of the user. This is known as the fallacy of the absence of error. The following testing concept states that Early Testing will help to address this issue.
Slide 4 - Initial Testing Early testing - Early in the software development life cycle, testing should begin. in order to catch any flaws early on in the requirements or design phases. Early in the testing process, a Defect may usually be fixed for significantly less money. But at what point should testing begin? It is advised that you begin looking for the bug as soon as the prerequisites are established. More on this idea in a subsequent training Testing is reliant on context Testing is context-dependent, which essentially means that you should test an e-commerce site differently than you would a ready-made commercial programme. The developed software is not all the same. Depending on the type of application, you could employ a different strategy, methodology, technique, and type of testing. Testing a POS system at a retail location, for example, will differ from testing an ATM. Conclusion: The process of developing software includes software testing as a crucial step. It is a part of each stage of the lifecycle and is not a single activity that happens immediately after the implementation of the code. Consideration during requirements formulation will be the first step in developing a good test plan. the method used to test a ready-made, commercial application. The developed software is not all the same. Depending on the type of application, you could employ a different strategy, methodology, technique, and type of testing. Testing a POS system at a retail location, for example, will differ from testing an ATM.