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User Acceptance Testing (UAT) Types and Best Practices

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What is User Acceptance Testing?

User Acceptance Testing is a process to check the system accepts the requirements of a user or not. It's performed at a time when the system used by actual users. User acceptance testing comes after - Unit Testing--->Integration Testing--->System Testing---->Acceptance Testing in the process of testing. User Acceptance Testing process related to another analogy such as to manufacture pens - While production of a ballpoint pen, the cap, the body, the tail, the clip, the ink cartridge, with the help of things mentioned above, a full ballpoint pen manufactured after that single pen produced with a combination of every single item.

Each component specified above tested to ensure that each component will make the pen in a working condition. When a complete pen is integrated, System Testing is performed. Once a System Testing is over, perform Acceptance testing to confirm that each ball pen is in working condition and ready to use for customers. You can also explore more about Integration Testing in this insight.

Evaluates the usability, functionality, and design of your app by having real users try the app, verifies whether it is user-friendly, and can handle tasks in real-world conditions. Source: Six Tips for User Acceptance Testing

Types of User Acceptance Testing (UAT)

Below are the various types of user acceptance testing.

Alpha Testing

The type of testing is executed to identify all possible issues/bugs before releasing a product to every data user or public. It simulates real users by using Black Box and White Box testing techniques. The primary function is to carry out tasks executed by a typical user. Alpha testing is carried out in a developed environment or a lab environment where a product is developed. The user of a product is the internal employees of an organization.

Beta Testing

It is the type of testing in which users of software or application are real users. This application is tested in a real environment and considered as a form of external User Acceptance testing. Beta version of the software released to a limited number of users when tested in a Real-Time environment with the help of real users to obtain feedback on product quality. Beta testing reduces failures, risks and provides increased quality of a product through customer validation. It is a final test before shipping a product to the customers. In this type of testing, getting direct feedback from users is a significant benefit. It is necessary to test a product finally in a Real-Time environment.

Parameters in an Acceptance Testing

Some parameters mentioned following that should be available in an Acceptance Testing report -
  • Report Identifier
  • Summary of Results
  • Variations
  • Recommendations
  • Summary of a To-do list
  • Approval decision

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Why User Acceptance Testing Matters?

  • Once software goes through Unit, Integration, and System testing that Acceptance testing is necessary.
  • Develops an application or writes code by requirement documents.
  • There can be a condition that software developed by going through an SRS document is not according to the client. What the client wants is missing in the software. The reason can be behind this that requirement changes during a project may not be communicated effectively.
  • Once a System Testing is completed, it is a type of testing demanded by the customer.
  • It is the customer's demand for satisfaction with all the functionality of the system that a system is working according to a requirement or not.

How to adopt User Acceptance Testing (UAT)?

The Criteria required to be specified for a User Acceptance Testing -
  • Business Requirements must be available.
  • Application code for the functionality of an application developed according to requirement.
  • It is necessary to complete the Unit Testing, Integration Testing, and System Testing before going to adopt User Acceptance Testing.
Before adopting UAT fulfill the following conditions -
  • The only Cosmetic error should be acceptable before User Acceptance Testing(UAT).
  • Execute Regression Testing successfully without any significant defects.
  • If there is any defect, then they should fix and test it, before UAT.
  • UAT environment should be ready.
  • They should be permitted from a System Testing in the team in Sign Off mail or in any other written format that system is ready for a UAT Execution.

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What are the benefits of UAT?

Below are the benefits of User Acceptance Testing
  • If internal User Acceptance Testing is executed before delivery to the customer, then it ensures that the system is working according to requirements and all the functions are correctly defined.
  • It satisfies with an end product.
  • It helps to identify that the end product works according to expectations.
  • Helps to deliver end product without any bug.
  • To deliver the end product in a proper working condition to a user.
  • To satisfy with all the functionalities that an end product should possess.

How does User Acceptance Testing Works?

UAT executed by users of a system or a system. It is a type of testing that mainly happens at a client location referred to as Beta testing. Once a System or application is ready for UAT testing, then the following tasks are necessary to perform -
  • 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 Results.
  • Confirm Business objectives.
  • Analysis of Business requirements.

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What are the Best Practises of UAT?

Following are some of the best practices of User Acceptance Testing that help to make UAT successful -
  • Preparation of UAT plan early in the project life cycle.
  • Prepare checklists before the UAT starts.
  • Conduct Pre-UAT session during system testing phase.
  • Set an expectation and define the scope of UAT clearly.
  • Test a system or an application with a real-world scenario and data.
  • Start thinking as an unknown user while testing the system.
  • Perform Usability Testing.
  • Conduct feedback sessions and meetings before moving to production.

User Acceptance Testing Tool

There are a large number of testing tools in the market used to do User Acceptance Testing, some of them mentioned below:

  • Fitness Tool - It is a Java tool useful as a testing engine. It helps to create tests and record all their results for a test in a table. Users of the tool enter formatted input and tests created automatically. Then execute tests, and output returned to the user.
  • Watir - It is a toolkit to automate browser-based tests during a process of User Acceptance testing. Ruby is a programming language used for inter-process communication between Ruby and Internet Explorer.


As companies adopt agile practices for delivering software services and solutions, business users are getting more involved. The user or Tester performs user acceptance testing to certify the system concerning the properly working requirements. 

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