What is Domain Testing in Software Testing?

Domain testing is the most common software testing technique in which we break a domain into subdomains and then test each subdomain's values. For example, if a website has been given for testing, we will be dividing the website into small parts (subdomain) for the ease of testing.

In other words, domain testing is a software testing method in which we select a small number of test cases from an infinite number of test cases and test a software application to see if it meets user requirements. For example, if we have an e-Commerce website, we will check the basic features first, such as adding items to the cart, checking out, and payment processing, and then we will check whether the order was successfully placed or not.

What is Domain Testing?

Domain testing is a software testing method that involves providing a set of inputs and evaluating the application's suitable outputs. Domain testing is a technique for ensuring that a software program takes data within a certain range and that the output matches the user's expectations.

Domain testing is a useful tool. The output of a system is checked with a small number of inputs to guarantee that the system does not accept erroneous data and that out-of-range input values are not accepted. It's one of the most common White Box Testing Techniques. It also ensures that the system will not accept inputs that fall outside of the set parameters.

Is Domain Knowledge Required for Domain Testing?

It is difficult for someone to execute effective work in a field with which they are unfamiliar. As a result, it's critical to have a fundamental understanding of the area in which we'll be working. It's also vital because we can't accomplish tasks effectively if we don't have basic domain knowledge:

Examples of Domain

• Banking Domain

A tester should have a fundamental understanding of banking concepts such as login, bill payment, and transfer. If the tester is knowledgeable, he will be able to execute domain testing quickly.

• Retail Domains

To execute a domain test successfully, the tester must understand how things work at various levels. Examples:  Warehouse management, in-store solutions, and other retail-related services.

• Healthcare Domain

A person who understands domain knowledge well can effectively manage a healthcare system. If someone does not have the expertise in the healthcare arena, there are several risks.

Domain Testing Strategy

• Determine what can go wrong when it comes to boundaries.
• Find the way to handle each case.
• Decide what value should I put to the test?
• Cross off any test points that are unnecessary.
• Check to see whether any of the boundaries are faulty.
• Each domain's boundaries should be double-checked.

Domain tester should have the following skills:

• Domain knowledge
• Can work under pressure
• Technical and programming skill
• Automation skill
• Bug hunting skill
• Communication skill
• Quick Lerner
• Domain testing necessitates domain expertise, so we may expect the expected results if we provide the correct input.

Conclusion

Domain testing is an important testing procedure in which we pass input values to achieve the desired output. To test a software application effectively, a tester needs to know what to test and how to test. Domain knowledge is an understanding of a specific topic or domain. It implies that a person has more knowledge and is familiar with all of the discipline's terms and intricacies.

A QA's domain knowledge is a major plus. It aids in reducing project delivery time and development time, as well as improving customer service and flexibility. If you have sufficient domain knowledge, you can apply it to any of the projects.