Automation Testing Interview Questions and Answers

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Frequently asked Automation Testing interview questions and answers for freshers and 1-5 year experienced testers on prerequisites and procedure followed in Automation Testing, Advantages, Disadvantages, test cases, tools used, automation Framework etc.

1. What is the difference between Manual Testing and Automation Testing?
  • Tests conducted by testers manually is called Manual Testing, wherein they compare the expected and actual functionality are in accordance with the test cases.
  • Tests conducted by using software tool is called Automation Testing, wherein the expected results are fed into the tool to be compared with the actual output of software being tested.


2. What are the prerequisites to start automation testing?
Following are the prerequisites for starting automation testing:
  • Stable build
  • List of repeated functionality
  • List of Test Data
  • iAutomation Framework


3. Explain the procedure followed in Automation Testing?

  • Tool Selection – List down the automation tools compatible, depending on whether the application is Desktop / Web based, language used for software development etc
  • Scope of Automation – List down the scenarios and functionality which are repetitive and automatable
  • Planning – Design a framework, Schedule the scripting and execution of the same
  • iDevelopment – Scripting the scenarios to be tested with inputs(Test Data) and expected output
  • Execution – Running/Executing the scripts and reporting the results
  • vMaintenance – Update the scripts in accordance to the latest changes with the software under test

4. What are the different types of Automation Testing?

  • Unit tests, GUI tests and Functional tests
  • Unit tests – Done at development phase which helps reduce the bugs
  • GUI tests – Done at testing level, which focuses its scripts to test user interface of application under test
  • Functional tests – Done at testing level, which simulates the functional scenarios to test the application with provided input and expected results

NOTE : Other automation test include Webservice testing

5. What are the Advantages of Automation Testing

  • Reduced test execution time
  • Can be executed in cross platforms test cases (different OS, browsers, environment, etc)
  • Simplifies complex functional tests
  • Automating repetitive tasks

6. What are the Disadvantages of Automation Testing

  • Continuous script maintenance/updation is necessary
  • Basic programming knowledge is a must for better automation test
  • Expensive
  • Skilled resources required for scripting

7. Why use a particular tool for automation testing ?

Tool selection should be done considering -

  • Platform to be tested - like supported OS, scripting languages supported by tool and testing 
  • environment
  • Debugging facility
  • Support for object identification
  • Frameworks supported

8. What are the aspects considered while shortlisting test cases for Automation?

Following cases should be automated :

  • GUI cases
  • Regression cases
  • Most repeated scenarios
  • Tests with multiple data sets

9. What are the factors to prove the maximum usage of automation testing?

Following are the criteria considered to prove maximum usage of automation testing :

  • Number of test cases to defect detected ratio
  • Execution time and time required to release the product
  • Reduction in manual interference
  • Complexity of Maintenance
  • Test coverage
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