What is System Testing in Software Development?

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System Testing is the testing where we test the complete system which is integrated at a system level. We need to check the complete behavior of system against the Software Requirement Specification (SRS). The main purpose of this level of testing is to make sure system is functioning as per functional requirement, end user requirement and business requirement. System Testing does not require any coding or development knowledge as it is Black Box testing type. System level testing can be performed only when Integration testing successfully completed for the functional and non-functional requirement.

Testing performed at the system level to verify the end to end usage of the system. System behavior with external systems needs to be check in System testing. This is the quite simple explanation about the System Testing, but in a real world you need to execute the test cases and perform the action on the system as mentioned in test cases. Maximum possible combination and scenarios are tested at this level.

 

Why System Testing?

  • It is the first level where complete system is tested as a whole
  • Validate system is meeting functional requirement
  • Validating system is meeting non-functional requirement
  • It is the level where we test the complete architecture and business requirement
  • System testing performs on staging servers, which is a replica of the production server.

 

Generally System testing is done by a separate group of testing professionals. In a real word, there are various testing is performed under System-Level Testing, but performing each any every type of testing at a system level is not practically possible. So management prefers to decide what type of system testing will be performed for the project before starting the testing activity.

 

Types of System Testing

 

  • Sanity Testing
  • Smoke Testing
  • Usability Testing
  • Stress Testing
  • Load Testing
  • Performance Testing
  • Regression Testing
  • Maintenance Testing
  • Security Testing
  • Accessibility Testing
  • Mutation Testing
  • Endurance Testing
  • Monkey Testing
  • Ad hock Testing

 

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