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9 September 2022

Manual testing Vs Automation testing | Difference | Comparison

Manual testers and recruiters began to worry about job losses as a result of automation testing after its introduction. Instead of focusing solely on the negative impacts of automation testing, we need to comprehend its advantages and the extent to which it may be applied to testing. Let us debate Manual testing Vs Automation testing to better understand more about it. 

What is Manual testing?

Without any prior programming experience, a tester can test an application using manual testing. In manual testing, the test engineer evaluates the software to ensure it is stable or bug-free. Even though manual test engineers constantly look for flaws or problems in products before they are launched onto the market, packaged software still has flaws. Even while manual test engineer tries their best, there is a chance that the finished software product will still have a flaw or fail to fulfill the customer's requirements.

What is Automation testing?

By using automation testing tools, any manual test case may be converted into a test script. This process is known as automation and the language used to do this is termed scripting or programming. The productivity efficiency and coverage of software testing are all improved by the use of automation testing. Without human intervention test engineer automates manual design test cases using automation testing methods. Additionally, these testing tools allow for control over test execution access to test data, and comparison of the actual result with the predicted outcome.

Manual testing Vs Automation testing | Difference between manual testing and automation testing:

  • In manual testing, test cases are executed by a human tester and software. Automation testing uses automation tools to execute test cases. 
  • Manual testing time consuming and takes up human resources. A manual approach is much slower than automated testing.
  • Exploratory testing is possible in manual testing. Automation does not allow random testing.
  • Manual testing is not accurate because of the possibility of human errors. Automated testing is a reliable method, as it is performed by tools and scripts. There is no testing fatigueue.
  • Manual testing requires a somewhat less initial investment. ROI is lower compared to automation testing in the long run. A bigger initial investment is required for automated testing. Though the ROI is better in the long run. 
  • Small changes like changes in id, class, etc of a button wouldn't thwart the execution of a manual tester. For even a trivial change in the UI of the AUT, automated test scripts need to be modified to work as expected. 
  • manual testing is usually recorded in excel or word, and test results are not readily/readily available. With automation testing, all stakeholders can log in into the automation system and check test execution results. 
  • Manual testing of the investment is needed for human resources. While in automation testing investment is required for testing tools as well as automation engineers. 
  • The manual testing method allows human observation, which may be useful to offer a user-friendly system. Automated testing does not involve human consideration. Therefore, it is unable to guarantee user-friendliness or a satisfying client experience.
  • Manual testing is not cost-effective for high-volume regression. While automation testing is not cost-effective for low volume regression. 
  •  Manual testing is performance testing is not feasible manually. While automation testing tests like load testing, stress testing, spike testing, etc. have to be tested by an automation tool compulsorily. 
  • Manual tests cannot be batched. In automation testing, you can batch multiple test scripts for nightly execution.
  • No need for programming in manual testing. Automation testing requires a working grasp of programming.
  • Although manual testing can be run simultaneously, doing so requires more expensive human resources. While automated testing can run in parallel on several operating systems and speed up test execution.
  • An easier test execution setup is required for manual testing. A simpler test execution setup is needed for automation tests.
  • Manual testing has a higher risk of missing out on the pre-decided test deadline. Automated tests have zero risks of missing out on a pre-decided test.
  • Although manual testing doesn't employ frameworks, it may use strict methods, checklists, and rules to create specific test cases. Automation testing uses frameworks like data drive, keyword, and hybrid to accelerate the automation process. 
  • When the test case just needs to be executed once or twice, manual testing is effective.. Automation testing is useful when frequently executing the same set of test cases.
  • Manual unit tests do not influence the coding process in terms of design. Automated unit tests enforce/drive test-driven development design.
  • Manual testing defeats the automated builds principle of DevOps. Automated tests are a crucial component of the DevOps cycle and aid in build verification testing. 
  • Executing the build verification testing is very difficult and time-consuming in manual testing. Automation testing is useful for build verification testing. 
  • Manual testing is suitable for exploratory, usability, and Adhoc testing. It should also be used where the AUT changes frequently. Automated testing is suited for regression testing. Performance testing, load testing, or highly repeatable functional test cases. 
  • Repetitive Manual test execution can get boring and error-prone. While the automation testing is done by tools. It's accurate and never gets boring. 
  • Manual test cases provide no training value. Automated tests act as a document that provides training value, especially for automated unit test cases. A new developer can look into unit test cases and understand the code base quickly.
Thanks for reading the article. Still, if you have any questions or queries in your mind on Manual testing Vs Automation testing then please ask us in the comment section below.

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