Black Box Testing: Types and Associated Techniques

ImpactQA — Black Box Testing: Types & Associated Techniques

Black Box Testing is an effective technique that helps examine the application under test (AUT). It is regarded as a unique arrangement since the AUT is tested regardless of the internal code structure or the deployment of specifics related to the software. In simple words, black-box testing is used to examine the system against external factors which are responsible for software crashes.

The purpose of this testing approach is to keep a check on the input that enters the software, and the output which is formed. You need to be receptive and smart for the exact use of black-box testing. Some of the situations where black box testing is required include:

  • To conveniently test software usability
  • Black box testing helps in examining the functionality of AUT
  • The testing approach sights the application directly through a user’s viewpoint
  • This testing provides an extensive outlook about the software
  • Black box testing examines the software/application as a complete system

Types of Black Box Testing

Functional Testing: This particular type focuses on the functional requirements associated with a system. Software testers are responsible for carrying out this test.

Non-Functional Testing: This black box testing type doesn’t associate with any specific functionality. It is solely focused on non-functional requirements like usability, scalability, and performance.

Regression Testing: Black box testing also includes Regression Testing that is conducted after code fixes or system upgrades. The motive is to examine the new code and its effect on the existing code.

Various Techniques for Black Box Testing

Boundary Value Analysis

State Transition Testing

It totally depends on the type of software/application that needs to be tested. State Transition Testing will look out for behavioural changes in the system on the whole.

Equivalence Partitioning

Decision Table Testing

Advantages of Black Box Testing

Below mentioned are the main benefits of black-box testing:

  • Testing is conducted post the development stage; both processes are independently performed.
  • There is no requirement of technical knowledge of carrying out black-box testing.
  • Black box testing works perfectly with functional testing services and implementations.
  • Test cases can be structured before development and even after the specification check.
  • Black box testing is basically for an extensive coverage that is generally skipped by most testers
  • It is believed that the Black box testing approach is somewhat similar to Agile.

Disadvantages of Black Box Testing

  • Operating with a broad sample set of test inputs might get really exhausting.
  • The possibility of unclear results and dead ends are fairly high.
  • If you lack precise and well-defined specifications, there can be trouble in designing test cases.
  • Black box testing results can at times be overestimated.
  • Black-box testing techniques can end up being redundant if the software developer has already implemented them.

The role of strict supervision is important to maintain the quality of a software or application. Black box testing caters to a simplified version of investigation without any fundamental knowledge of technical jargon. To learn more about this novel testing method, you can get in touch with a renowned software testing company that can provide valuable information about various black-box testing approaches.