What is software testing? What are its types and levels?The process of executing computer software in order to determine whether the results of the software are correct without any errors. We need software testing to make sure the software matches all the requirements of the client and are implemented perfectly. It identifies the errors before the software is deployed enabling the software development team to look upon it and correct those errors. There are two types of errors will normally occur on software testing. Coding Errors and Run time errors. Runtime error is a mystic one and a software tester should test the software in various angles. Software testing helps to improve quality and reliability, reduces incompatibility and interoperability issues, error free software makes your client impress on your work and will refer to other. Software testing in Reality The software success mainly relies on the process of software testing. This is how the process of software testing plays an important role. Testing focuses more on client requirements and tell whether the software is working according to client requirements. Structural vs Functional Testing Structural testing is based to explore errors occur during the coding part of the software program , where as functional analysis will happen based on tests to find out and explore errors while running the program and make sure the software aligns with the client requirements and design specification. In software terminology there are three basic types of testing Black Box Testing – is a systematic testing process where inputs, outputs and other functions are unknown or irrelevant. When it is applied to a particular software the tester will have only the idea of what the expected output of the software but not the way it has been arrived. That’s why we call black box is a testing which is in respect with design specifications. White Box Testing It’s a software testing process where the tester will examine whether the code is working as expected. The tester adopts Structural testing process, Program logic driven testing, design based testing and he will examine the internal structure of the program. Grey Box Testing It’s a mixed process of White box and black box testing styles, but you cannot imagine as it is exactly black box testing or white box testing, because the tester of this process here will know some of the internal working of the software. Tester tests a limited number of test cases and sees whether it runs without any errors. Levels of Testing
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