What is the difference between UAT user acceptance testing and system testing?

User Acceptance Testing (UAT) is a type of testing performed by the end user or the client to verify/accept the software system before moving the software application to the production environment. UAT is done in the final phase of testing after functional, integration and system testing is done.

 

In this UAT tutorial, you will learn:

  • What is UAT?
  • Purpose of UAT
  • Need of User Acceptance Testing
  • Acceptance Testing and V-Model
  • How to execute UAT Tests
  • Exit criteria for UAT:
  • Qualities of UAT Testers:
  • Best Practices:
  • UAT Tools
  • Example Guidelines for UAT

Purpose of UAT

What is the difference between UAT user acceptance testing and system testing?

The main Purpose of UAT is to validate end to end business flow. It does not focus on cosmetic errors, spelling mistakes or system testing. User Acceptance Testing is carried out in a separate testing environment with production-like data setup. It is kind of black box testing where two or more end-users will be involved.

UAT is performed by –

  • Client
  • End users
  • Need of User Acceptance Testing

    Need of User Acceptance Testing arises once software has undergone Unit, Integration and System testing because developers might have built software based on requirements document by their own understanding and further required changes during development may not be effectively communicated to them, so for testing whether the final product is accepted by client/end-user, user acceptance testing is needed.

    What is the difference between UAT user acceptance testing and system testing?

    • Developers code software based on requirements document which is their “own” understanding of the requirements and may not actually be what the client needs from the software.

    • Requirements changes during the course of the project may not be communicated effectively to the developers.

    Acceptance Testing and V-Model

    In VModel, User acceptance testing corresponds to the requirement phase of the Software Development life cycle(SDLC).

    What is the difference between UAT user acceptance testing and system testing?

    Prerequisites of User Acceptance Testing:

    Following are the entry criteria for User Acceptance Testing:

    • Business Requirements must be available.
    • Application Code should be fully developed
    • Unit Testing, Integration Testing & System Testing should be completed
    • No Showstoppers, High, Medium defects in System Integration Test Phase –
    • Only Cosmetic error is acceptable before UAT
    • Regression Testing should be completed with no major defects
    • All the reported defects should be fixed and tested before UAT
    • Traceability matrix for all testing should be completed
    • UAT Environment must be ready
    • Sign off mail or communication from System Testing Team that the system is ready for UAT execution

    How to execute UAT Tests

    UAT is done by the intended users of the system or software. This type of Software Testing usually happens at the client location which is known as Beta Testing. Once Entry criteria for UAT are satisfied, following are the tasks need to be performed by the testers:

    What is the difference between UAT user acceptance testing and system testing?
    UAT Process
    • Analysis of Business Requirements
    • Creation of UAT test plan
    • Identify Test Scenarios
    • Create UAT Test Cases
    • Preparation of Test Data(Production like Data)
    • Run the Test cases
    • Record the Results
    • Confirm business objectives

    Step 1) Analysis of Business Requirements

    One of the most important activities in the UAT is to identify and develop test scenarios. These test scenarios are derived from the following documents:

    • Project Charter
    • Business Use Cases
    • Process Flow Diagrams
    • Business Requirements Document(BRD)
    • System Requirements Specification(SRS)

    Step 2) Creation of UAT Plan:

    The UAT test plan outlines the strategy that will be used to verify and ensure an application meets its business requirements. It documents entry and exit criteria for UAT, Test scenarios and test cases approach and timelines of testing.

    Step 3) Identify Test Scenarios and Test Cases:

    Identify the test scenarios with respect to high-level business process and create test cases with clear test steps. Test Cases should sufficiently cover most of the UAT scenarios. Business Use cases are input for creating the test cases.

    Step 4) Preparation of Test Data:

    It is best advised to use live data for UAT. Data should be scrambled for privacy and security reasons. Tester should be familiar with the database flow.

    Step 5) Run and record the results:

    Execute test cases and report bugs if any. Re-test bugs once fixed. Test Management tools can be used for execution.

    Step 6) Confirm Business Objectives met:

    Business Analysts or UAT Testers needs to send a sign off mail after the UAT testing. After sign-off, the product is good to go for production. Deliverables for UAT testing are Test Plan, UAT Scenarios and Test Cases, Test Results and Defect Log

    Exit criteria for UAT:

    Before moving into production, following needs to be considered:

    • No critical defects open
    • Business process works satisfactorily
    • UAT Sign off meeting with all stakeholders

    Qualities of UAT Testers:

    What is the difference between UAT user acceptance testing and system testing?

    UAT Tester should possess good knowledge of the business. He should be independent and think as an unknown user to the system. Tester should be Analytical and Lateral thinker and combine all sort of data to make the UAT successful.

    Tester or Business Analyst or Subject Matter Experts who understand the business requirements or flows can prepare test and data which are realistic to the business.

    Best Practices:

    Following points needs to be considered to make UAT Success:

    • Prepare UAT plan early in the project life cycle
    • Prepare Checklist before the UAT starts
    • Conduct Pre-UAT session during System Testing phase itself
    • Set the expectation and define the scope of UAT clearly
    • Test End to End business flow and avoid system tests
    • Test the system or application with real-world scenarios and data
    • Think as an Unknown user to the system
    • Perform Usability Testing
    • Conduct Feedback session and meeting before moving to production

    UAT Tools

    There are several tools in the market used for User acceptance testing and some are listed for reference:

    Fitness tool: It is a Java tool used as a testing engine. It is easy to create tests and record results in a table. Users of the tool enter the formatted input and tests are created automatically. The tests are then executed and the output is returned back to the user.

    What is difference between system testing and user acceptance testing?

    1. System testing is done to check whether the software or product meets the specified requirements or not. Acceptance testing is the type of testing which is used to check whether the software meets the customer requirements or not.

    Is acceptance testing the same as user acceptance testing?

    The user acceptance test is performed by the users and application managers. The Operational Acceptance test: also known as Production acceptance test validates whether the system meets the requirements for operation.

    What are the 4 types of acceptance testing?

    Types of acceptance testing include:.
    Alpha & Beta Testing..
    Contract Acceptance Testing..
    Regulation Acceptance Testing..
    Operational Acceptance testing..

    What is UAT user acceptance testing?

    User acceptance testing (UAT), also called application testing or end-user testing, is a phase of software development in which the software is tested in the real world by its intended audience.