Black Box Testing

Black box testing is a technique for testing software applications’ functionalities without having access to their underlying code structure, implementation specifics, or internal routes. Black Box Testing is totally based on software requirements and standards and primarily concentrates on the input and output of software programmes. Additionally called behavioral testing.
Performing Black Box Testing
Here are the standard procedures to be followed when conducting any kind of black box testing.
• The system’s requirements and specifications are first looked at.
• The tester selects legitimate inputs (a positive test scenario) to determine whether the SUT appropriately interprets them. Additionally, a few erroneous inputs are chosen (a negative test scenario) to see if the SUT can catch them.
• The tester establishes anticipated outcomes for each of those inputs.
• With the chosen inputs, software testers create test cases.
• The test cases are run through.
• A software tester contrasts the results produced by the programme with those anticipated.
• Any flaws are corrected and the product is retested.
Black Box Testing Types
Black Box Testing comes in a variety of forms; however, the following are the most common:
• Functional testing is a sort of black box testing that focuses on a system’s functional requirements and is carried out by software testers.
• Non-functional testing – This kind of black box testing focuses on non-functional requirements including performance, scalability, and usability rather than testing for specific functionality.
• Regression testing – Regression testing is carried out following code upgrades, fixes, or any other type of system maintenance to ensure that the new code hasn’t negatively impacted the old code.
Black box testing tools:
The black box testing tools you employ will primarily rely on the sort of black box testing you are performing.
• QTP with Selenium can be used for functional and regression tests.
• JMeter and LoadRunner are good tools to employ for non-functional tests.