Humans Are A Crucial Element Of Testing

The Difference Between Automation And Manual Testing

Whether to choose automation or manual testing depends on three factors:

• The Purpose Of The Test

  Manual tests help you evaluate the efficiency of the product, test value, and discover bugs and areas of improvement, whereas automation helps in testing on a recurring basis, identifying functional bugs, and maintaining the stability of the product. As a tester, you need to decide what kind of test the product needs at the moment and choose accordingly.

• Usability And Run Time

  Manual tests take less time to write and longer to execute, whereas automation tests take longer time to write and less time to execute. For example, a manual test might take 10 minutes to write and 10 minutes to execute whereas an automation test takes 4 hours to write and 2 minutes to execute. You need to run the test 130 times to get your return on investment for the time spent on writing test scripts. Therefore, as a tester, you need to know which features are worth writing test cases for and those that are not.

• Availability Of Resources

  Manual testing takes time and therefore if you are short-staffed it is not a wise decision to test everything manually. In such scenarios, it is advised to use your human resources to test new features and automate those that are already in production.

Regression testing and exploratory testing usually sit on opposite ends of this decision: regression testing repeats and automates well, while exploratory testing depends on a human tester's judgment.

You can refer to the below video tutorial on how to perform manual testing on TestMu AI.

How Do AI Testing Agents Change the Manual vs Automation Decision?

AI testing agents now write and run tests from a plain-language instruction, which shifts the manual-versus-automation choice toward what a human should review, not perform.

• Natural-language authoring: An agent turns an instruction like "log in and add an item to the cart" into a real browser test without a human writing Selenium or Cypress code.
• Self-healing execution: When a locator breaks after a UI change, the agent adjusts the step and reruns it instead of failing the whole suite.
• Human review over scripting: Testers spend less time writing scripts and more time judging whether the agent's generated test covers the right business scenario.
• Coverage without full trust: An agent-written suite can cover more paths per hour than a person writing scripts by hand, but a tester still validates the scenario before it reaches the CI pipeline.

The purpose, run time, and available resources this article already covers still decide the split, but an AI agent moves more of automation's setup cost to before the test even runs.

Managing Automation And Manual Tests Together

Automation and manual testing are two different entities that cater to different audiences. Therefore it is essential to manage both together.

A documented test strategy usually decides which tests to automate and which ones stay manual as the product grows.

• Orchestrate Testing: Have a resource to orchestrate testing. Ensure that there is visibility across the QA team on the tasks that need to be performed. This keeps test execution visible across the team instead of siloed with one tester.
• Be Consistent With Names And Conventions: Use industry-standard naming conventions for your tests. This helps your team in improving communication and that way everybody is on the same page.
• Group Tests: Grouping tests helps manage tests easily. You can group tests based on testers, metrics etc.
• Get Your Devices: When you are performing automation and manual testing in parallel, there is a high chance that your QA team will have to wait for the devices. Ensure that your testers get the right devices that they need to start testing immediately. TestMu AI is a cloud-based test management platform that gives your team instant access to devices, browser versions, and operating system environments for test execution.

You can start testing immediately with a lifetime free account.