SUT is testing a system to ensure it works, often for error correction. It can be used for the entire program or specific sections. Integration testing precedes SUT to ensure successful installation. Testing involves going through every function and tool to check for errors.
“System Under Test” (SUT) is a broad term meaning that the programmer, or anyone else, is testing the system in question to make sure it works. This is normally used for error correction, because the programmer should be able to fix any problems that arise during the testing phase of the system. SUT is usually used for an entire program, but can also be used to test just certain sections of a program. This is normally done after integration testing, which ensures that the program can integrate and install itself on a computer.
There is seldom a system, commercial or free, that doesn’t become a testing system at some point. This means that the programmer or someone else you rely on to troubleshoot is using the current version of the program. The program has not finished at this point, so there may still be a lot of changes before the system is ready for deployment. The program can also be scaled to make it easier for the person to go through the system, although this isn’t always the case.
The main reason for putting a system on trial is to check for errors. This is normally done by going through every single function, command, tool and anything else the program offers. Using the tools in combination with each other can also produce unexpected errors that should be corrected. Most programs have at least one bug, which is why SUT is often an important step in the system development process.
Testing the system usually involves the entire program, especially the first few times, so that the tester can walk through each function. If there is only one function that needs to be tested, then the test can be scaled so that only that function is usable. This makes it easier and faster for the tester to check the function to see if the improved programming fixed the problem.
Integration testing traditionally precedes the system testing phase. This is because the integration test is used to see if the program is able to successfully install and integrate with your computer. If you can’t install, the program usually won’t run, which means it can’t be used. At the same time, programmers are able to change this normal order or omit integration testing altogether, although doing so may be a bad idea.
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