The white box testing is done by Developer, where they check every line of a code before giving it to the Test Engineer. Each technique is used according to its testing criteria. There are various methods used for manual testing. If the test engineer does manual testing, he/she can test the application as an end-user perspective and get more familiar with the product, which helps them to write the correct test cases of the application and give the quick feedback of the application. If we don't want to face these kinds of problems, we need to perform one round of testing to make the application bug free and stable and deliver a quality product to the client, because if the application is bug free, the end-user will use the application more conveniently. Whenever an application comes into the market, and it is unstable or having a bug or issues or creating a problem while end-users are using it. Manual testing is essential because one of the software testing fundamentals is '100% automation is not possible.' Why we need manual testing Manual Testing requires knowledge of manual testing techniques but not of any automated testing tool. This testing requires great efforts and time, but it gives the surety of bug-free software. Manual testing is mandatory for every newly developed software before automated testing. The developer fixed the defects and handed it to the tester for retesting. The difference between expected output and output, given by the software, is defined as a defect. Manual Testing is one of the most fundamental testing processes as it can find both visible and hidden defects of the software. Test case reports are also generated manually. Test cases are planned and implemented to complete almost 100 percent of the software application.

It ensures whether the application is working, as mentioned in the requirement document or not. All test cases executed by the tester manually according to the end user's perspective. Manual testing is a software testing process in which test cases are executed manually without using any automated tool.

Install sonarlint in eclipse