The structure of all plans should be an equivalent, but content will vary supported degree of risk testers perceive as related to software being developed. Previous Installation testing in Software Testing. Next Coding Standards and Guidelines. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment?
Please use ide. Load Comments. The goal of testing software is not to find bugs or to make software better. This goal is especially relevant to testing enterprise software with complex digital workflows. In such a case, ensuring smooth functioning, usability, compatibility, and data consistency of the software is of paramount importance due to the higher impact of any issues uncovered after a release.
Customers can be impacted by the frequency of an error or undesired functionality, or by the severity of the problem. The reason I define software testing in this way is because—as any tester will tell you— you can never find all the bugs or defects in a piece of software and you can never test every possible input into the software. For any non-trivial application. So, the idea is not to find every single possible thing that is or can go wrong, or even to verify the software against a spec—as some people like to define software testing—because both are impossible.
Oh, also if you ever find a complete spec for any application in your experience as a software developer, let me know. Instead, the focus and main idea behind software testing is to reduce the risk that the customer is greatly impacted in a negative manner when using the software.
Typically this is achieved by first prioritizing what areas of the software are likely to have the biggest impact i. When the actual functionality deviates from the desired functionality, a defect is usually logged and those defects are prioritized based on severity. Some defects get fixed, other defects are low enough impact that they are just noted and left in the system. Just like the development world has many concepts and methodologies for creating software, there are many ways to think about how to test and the field is changing all the time.
Early in my career, it could be perceived as a slight or insult to call someone who worked in testing a tester; they preferred to be called QA or quality assurance professionals. Just a year or two ago, I attended a testing conference and I made the mistake of calling someone a QA person. They corrected me and said that tester was the preferred term. When you do black-box testing, you are only concerned with inputs and outputs. Most testing is done in this fashion because it is largely unbiased.
Real white-box testing is when you understand some of the internals of the system and perhaps have access to the actual source code , which you use to inform your testing and what you target.
With white-box testing , you have at least some idea of what is going on inside the software. Oftentimes, unit testing is called white-box testing, but I disagree. Unit testing is not testing at all.
Advantages Disadvantages Discovering of hidden bugs more efficiently Tester needs to have coding knowledge Code will be optimized Code access required Fast problem and bug spotting Focus on existing software, missing functionality may not be discovered. The basic idea of acceptance testing is that you have some tests which test the actual requirements or expectations of the customer, and other tests that run against the system as a whole.
This kind of testing could be testing the functionality of the system or it could be testing the usability or both. Automated testing is any testing in which the execution of the test and the verification of the results is automated.
So, you might automate the testing of a web application by running scripts which open up a web page, input some data, push some buttons and then check for some results on a page.
You could also automate the testing of an API by writing scripts which call out to the API with various data and then check the results that are returned. More and more of testing is moving towards automated testing because manually running through test cases over and over again can be tedious, error-prone and costly—especially in an Agile environment where the same set of tests may need to be run every two weeks or so to verify nothing has broken.
This brings us to regression testing, which is basically testing done to verify that the system still works the way it did before. This is extremely important with Agile development methodologies where software is developed incrementally and there is a constant potential that adding new features could break existing ones.
He must look out continually to improve the existing methods to make testing more effective. Software Testing reduces the probability of undiscovered defects remaining in the software but even if no defects are found, it is not a proof of correctness. This can be the case if the system is tested thoroughly for the wrong requirement. Software testing is not mere finding defects, but also to check that software addresses the business needs.
The absence of Error is a Fallacy i. So that any defects in the requirements or design phase are captured in early stages. It is much cheaper to fix a Defect in the early stages of testing. But how early one should start testing? It is recommended that you start finding the bug the moment the requirements are defined.
More on this principle in a later training tutorial. Testing is context dependent which basically means that the way you test an e-commerce site will be different from the way you test a commercial off the shelf application. You might use a different approach, methodologies, techniques, and types of testing depending upon the application type. This is so very untrue. Test Principles will help you create an effective Test Strategy and draft error catching test cases. Initially, while you learn to drive, you pay attention to each and everything like gear shifts, speed, clutch handling, etc.
But with experience, you just focus on driving the rest comes naturally.
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