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Black Box Testing


Definition

Black Box Testing, BBT, is the process of testing an application's functionality and requirements.

Black-Box Testing usually only requires the tester to know and understand the business requirements and software functional specifications.

BBT is not considered a testing methodology.

It might best described as a Testing Strategy.

The tester is required to know little, or even nothing, of the internal workings of the software or the Source Code.

The test cases are built to test the software applications's functionality.

Black Box Testing is the considering of the software application as an independent and self contained unit, hence the name, Black Box.

Black-Box Testing addresses the issue, are we building the "Right" software?

Where as White-Box Testing addresses the issue, are we building the software "Right"?


User Interaction

The focus of Black-Box Testing is to test all the possible user interaction with the software application.

This testing effort attempts to mimic the user behavior when using the software.

That is why it is sometimes referred as Software or User "Behavior" Testing.



Black Box Testing Features

  • The Tester Attempts to Emulate the Actual Software User
  • The Tester does not Require Technical Knowledge of the Software Application
  • The Test Cases are Driven by User Requirements and Specifications
  • The Focus is on the Implementation of the New Functionality


Black Box Advantages

  • Tester Requires Little to No Application Technical Knowledge of the Software
  • Test Cases can be Completed with the Software Specifications
  • Because the Tester Requires Little Knowledge, BBT is Considered Unbiased


Testing Methods Used

There are several different software testing Methodologies used to successfully perform BBT.

Because BBT is not a Testing Methodology, but more of a Test Strategy, it encompasses several Testing Techniques.

These Testing Types fall under the Black-Box Testing umbrella:

  • Functional Testing
  • Usability Testing
  • User/System Behavior Testing
  • Boundary Value Testing
  • Error Guessing Testing
  • Smoke Testing
  • Acceptance Testing
  • Integration Testing


Conclusion

Black-Box Testing can be a very ambiguous concept to understand.

However, keep in mind that BBT is performed from the perspective of the software user.

Conceptually speaking, Black-Box Testing requires little to no understanding of the software source code or internal workings of the software.


White Box Testing

White Box Testing, WBT, is the practice of testing the internal workings of the software application.

This requires the Tester to have a thorough and deep understanding of the software being tested.

For more information about White Box Testing.


Software Testing Procedures

Software Testing Procedures are the testing procedures and steps used to ensure the software application is tested and validating before releasing the software.

For more information about Black Box Testing and Software Testing Procedures


Software Testing

Software testing measures the completeness, correctness and quality of the software. Because these can be somewhat subjective depending on who is doing the testing, There have been many attempts to formalize testing requirements.

For a deeper discussion about Software Testing


Software Quality Assurance

Software Quality Assurance provides the standards, processes and procedures that ensure that a software application meets it's requirements and is properly tested.

For more information about Software Quality Assurance.



Software Testing Table of Contents

Software Testing Software Testing is the systematic and sometimes programmatic, investigation of software for defects and to ensure the application runs appropriately.

Black Box Testing Black Box Testing is process of testing an application's functionality. This type of testing usually only requires the tester to know and understand the business requirements and software specifications.

Software Quality Assurance Software Quality Assurance is the systematic testing of a software product to meet the planned requirements. Quality Assurance is the testing of a software product and the process improvement of the testing cycle.

Software Testing Procedures Software Testing Procedures are the testing procedures and steps used to ensure the software application is tested and validating before releasing the software.

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White Box Testing White Box Testing, WBT, is the practice of testing the internal workings of a software application. This requires the Tester to have a thorough and deep understanding of the software being tested. White-Box Testing addresses the issue, are we building the software Right?

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