IT System Testing
System testing is testing conducted on a complete integrated system to evaluate the system's compliance with its specified requirements.
System testing takes, as its input, all of the integrated components that have passed integration testing. The purpose of integration testing is to detect any inconsistencies between the units that are integrated together (called assemblages). System testing seeks to detect defects both within the "inter-assemblages" and also within the system as a whole. The actual result is the behavior produced or observed when a component or system is tested.
System testing is performed on the entire system in the context of either functional requirement specifications (FRS) or system requirement specification (SRS), or both. System testing tests not only the design but also the behavior and even the believed expectations of the customer. It is also intended to test up to and beyond the bounds defined in the software or hardware requirements specification(s).
Software testing is an investigation conducted to provide stakeholders with information about the quality of the software product or service under test. Software testing can also provide an objective, independent view of the software to allow the business to appreciate and understand the risks of software implementation. Software testing involves the execution of a software component or system component to evaluate one or more properties of interest. In general, these properties indicate the extent to which the component or system under test meets the requirements that guided its design and development, responds correctly to all kinds of inputs, performs its functions within an acceptable time, is sufficiently usable, can be installed and run in its intended environments, and achieves the general result its stakeholders desire. As the number of possible tests for even simple software components is practically infinite, all software testing uses some strategy to select tests that are feasible for the available time and resources.
Mobile-device testing assures the quality of mobile devices, like mobile phones, PDAs, etc. The testing will be conducted on both hardware and software. And from the view of different procedures, the testing comprises R&D testing, factory testing and certification testing. Mobile-device testing involves a set of activities from monitoring and troubleshooting mobile applications, content and services on real handsets. Testing includes verification and validation of hardware devices and software applications.
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F.A.Q. about IT System Testing
What is System Testing?
System Testing is the testing of a complete and fully integrated software product. Usually, the software is only one element of a larger computer-based system. Ultimately, the software is interfaced with other software/hardware systems. System Testing is actually a series of different tests whose sole purpose is to exercise the full computer-based system.
Two Category of Software Testing:
- Black Box Testing;
- White Box Testing.
System test falls under the black box testing category of software testing.
White box testing is the testing of the internal workings or code of a software application. In contrast, black box or System Testing is the opposite. The system test involves the external workings of the software from the user's perspective.
What do you verify in System Testing?
System Testing involves testing the software code for following:
- Testing the fully integrated applications including external peripherals in order to check how components interact with one another and with the system as a whole. This is also called End to End testing scenario.
- Verify thorough testing of every input in the application to check for desired outputs.
- Testing of the user's experience with the application.
That is a very basic description of what is involved in system testing. You need to build detailed test cases and test suites that test each aspect of the application as seen from the outside without looking at the actual source code.
What Types of System Testing Should Testers Use?
There are over 50 different types of system testing. The specific types used by a tester depend on several variables. Those variables include:
- Who the tester works for - This is a major factor in determining the types of system testing a tester will use. Methods used by large companies are different than those used by medium and small companies.
- Time available for testing - Ultimately, all 50 testing types could be used. Time is often what limits us to using only the types that are most relevant for the software project.
- Resources available to the tester - Of course some testers will not have the necessary resources to conduct a testing type. For example, if you are a tester working for a large software development firm, you are likely to have expensive automated testing software not available to others.
- Software Tester's Education - There is a certain learning curve for each type of software testing available. To use some of the software involved, a tester has to learn how to use it.
- Testing Budget - Money becomes a factor not just for smaller companies and individual software developers but large companies as well.