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. In fact, you could really make the argument that all automated tests are regression tests since the whole purpose of automating a test is so that it can be run multiple times.
Functional testing is another broad term used in the testing world to refer to testing activities where what is being tested is the actual functionality of the system. So, functional testing is the kind of testing where you are really concerned with the system doing what it is supposed to do from a functional perspective. But, there is definitely some legitimacy to the idea of exploratory testing and perhaps I am a bit too harsh and judgmental.
The idea behind exploratory testing—when done correctly—is that you have some guidelines and a basic plan of which application areas you are going to test and ways you are going to test them. Then, you go about without actual test cases and explore the application, looking for things that might be wrong or behavior that is unexpected.
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White-box testing is also called glass testing or open-box testing. In order to perform white-box testing on an application, a tester needs to know the internal workings of the code.
White box testing is when the tester has full access to and knowledge of the unit under test. Black box testing is when he doesen't and is only allowed to enter inputs and verify outputs. Each has advantages. Software testing technologies refer to the tools and techniques used by the software tester. Software Testing Tools include items like defect trackers, test data generators, test management applications and automation tools. Techniques refer to approaches to testing like white box where you have no visibility of the internals of the application and white box where you might have an understanding of the applications internal architecture or code.
Black box testing refers to the type of testing in which the user can feed inputs into a piece of software and look at the outputs. These tests are designed to ensure correct results are being calculated and displayed.
This is in contrast to white box testing in which the user can also see the source code for the program. These tests are designed to test all possible ways the program can process a piece of input. Software testing techniques are approaches you take towards running a test case. For example at the highest level you may take a black box approach or a white box approach to testing a piece of software.
Where with a black box approach you don't understand the internals of the software you are testing but you do know what range of inputs the software can accept and from that you can deduce the expected results. With a white box approach you have a much better understanding of how the software works perhaps you've been involved in a code review with the developers and you can create your tests based on exercising the code knowing that the software should do x, y and z with the inputs.
Software testing tools however would be employed to help you achieve the approaches you plan to take with testing a piece of software. So taking the black box testing approach discussed above you may use a test data generation tool to help you create the inputs for your black box testing technique. Another example would be using a data comparison test tool to compare expected results with actual results once the tests have been exercised.
So in conclusion a test technique describes the approach you might take to test a piece of software, where as a software testing tool would be a method you employ to help you achieve the aims of the software test. Combining development testing and operational testing allows for software testers to do both white box and black box testing.
That is, it allows for the code to be tested, while functional requirements are also tested, making for a more smooth development cycle. Yellow box testing is basically an error message testing.. Red Box testing is referred to as Acceptance Testing. Software testing is the process of assessment of a software item to detect differences between given input and expected output. Testing measures the quality of the product.
In other words, software testing is a verification and validation process. Verification: Verification is the process to make sure the product fulfill the conditions imposed at the start of the development phase. In other words, to make sure the product behaves in the way it should be. Validation: Validation is the process to make sure the product meet the specified requirements at the end of the development phase.
In other words, to make sure the product is built as per customer requirements. Types of testing:1 Unit Testing: It includes of an individual unit or group of related units. It falls under the class of white box testing. It may fall under both white box testing and black box testing. It falls under the class of black box testing. Log in. Software and Applications non-game. Software Engineering. Study now. See answer 1. Best Answer. Study guides.
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