Testing large software systems

The entry criteria include the following:. Once the application meets the entry criteria, test cases are executed, bugs are raised, issues are fixed and retested. When all the issues have been fixed and verified by the QA team, the release is given green signal and handed over to the client. As a new tester, you might confuse system integration testing with the software system testing. System testing is performed at the whole system, whereas system integration testing is performed when modules are integrated to see whether they are returning the expected outcome.

System testing is a high-level testing and does not require any knowledge of the code or internal structure. On the contrary, system integration testing requires the knowledge of two interfaces and their interaction. The test cases in system testing are focused on real world scenarios, whereas the integration test cases are focused on how two or more modules will interact.

System testing comprises of several other testing types including functionality, performance, stress, load, and integration testing. System integration testing can be performed by using different approaches such as top-down, bottom-up, and hybrid approach. Most importantly, system integration testing is performed to find the bugs in individual modules while system testing is performed to find the bugs in the whole integrated system.

As a new tester, you might face several challenges when performing software system testing for the first time. The first challenge is to gain thorough understanding of the complete system. You might have knowledge of one or two modules of the system, but this is insufficient to perform system testing. In addition to it, you need to fully understand the data flows and workflows.

This challenge can be overcome by skimming the requirements specifications documents. If the system is too big and complex, you can take help from the flowcharts and workflow diagrams. An understanding of how different modules of the system interact with each other provides an edge in the intelligent creation of test cases. The second challenge is to understand the different roles in the system and their interaction with the system.

Understanding the viewpoints of users is required to create system test cases. To overcome this challenge, go through the user stories, use cases and activity diagrams. Third, you might face some trouble in generating large volumes of realistic test data.

You can insert large volumes of required data in the database by creating either database scripts or by using data generator tools. The fourth challenge is to have a firm grip on the various testing types that comprise the system testing.

These include the functional and non-functional testing types. You can take help from automated testing tools to speed up the process. Software system testing is performed at the complete system to verify that it meets the user requirements. The major focus of software system testing is to make sure that system works perfectly well for end to end scenarios. In this article, we discussed some important things that every new software tester must know about software system testing.

We also looked at a few challenges that you might face while performing system testing as a new tester, and how you can overcome those challenges. What is your experience with software system testing?

There are over 50 different types of system testing. The specific types used by a tester depend on several variables. Those variables include:. Skip to content. What is System Testing? Report a Bug. Previous Prev. Next Continue. Home Testing Expand child menu Expand. SAP Expand child menu Expand. Web Expand child menu Expand.

This type of testing makes sure that the whole component works properly even after adding components to the complete program. Example In school record suppose we have module staff, students and finance combining these modules and checking if on integration these module works fine is regression testing 4. Smoke Testing This test is done to make sure that software under testing is ready or stable for further testing It is called a smoke test as the testing an initial pass is done to check if it did not catch the fire or smoke in the initial switch on.

Example: If project has 2 modules so before going to module make sure that module 1 works properly. Skip to content.

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