Tuesday, 31 July 2018 10:06

Manual Testing Versus Automated Testing

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There are two ways to ensure that the application will work without any critical errors: manual testing and automated testing.

Manual testing : is a process where the tester plays the role of the end user, and manually executes all the test cases. It is important to foresee all the possible actions the end user can take, and check whether the software will respond correctly to these actions.

Automated testing : doesn’t require the tester to manually click through the application. On the contrary, an automated testing tool will execute all the predefined test cases, comparing the expected response of the software with the actual response. Any type of project can involve both manual and automated testing, however, the correct choice of testing strategy depends on the project itself. It is important to find a balance between manual and automated testing.

 Features of manual software testing

Manual testing requires the tester to act as the target software user. The tester’s behavior with the app should closely resemble the behavior of the user. Therefore, a deep understanding of the target audience is critical. Besides, there are several things you should consider when choosing manual testing. 

The real human behavior

Manual testing enables to take certain actions with the software that the testing tool will never predict or simulate. At the same time, they are likely to be taken by the users. You will also receive actual user feedback concerning UX of the software, which is quite valuable.

At the same time, the human factor is an important disadvantage. The monotonous work can cause the tester to be less attentive, resulting in some minor (or even major) bugs being missed. 

Time and cost efficiency

Manual testing is perfect when you have to test the app only once, as this does not require any preparation such as writing test cases. Moreover, you save a lot on the cost of testing tools.

On the other hand, if the software is being modified frequently, it requires running the same test cases over and over again. Doing this manually would require a significant amount of time. Automated test cases, once written, can be reused for each update testing. 


Testing the software manually allows a lot of flexibility. The tester can quickly change the testing strategy or test any idea straight away. Compared to this, automated testing is less flexible, since changes to the testing procedure can be quite time-consuming. 

This is impossible during automated testing, as all the test cases are written in advance and can’t be changed or added during the testing process.

Features of automated software testing

Prior to automated testing, the tester must predefine the use cases the tool is going to audit. As you may have guessed, automated testing software imitates the actions of reals user and compares the app’s actual response with the expected one.

More exact than a human tester

One of the disadvantages of manual testing is the human factor. Mistakes due to large amounts of testing or a lack of attention will never happen to software (unless there is a bug :) ). That’s why automated testing is more exact and enables more bugs to be found. However, the automated testing cannot test the user-friendliness of a website or app. Manual testing, on the contrary, shows more exact results when it comes to testing the user interface. 

Higher productivity

Automated test cases are executed several times faster than manual tests. They can also run unattended, which enables testing to occur overnight, or several applications can be tested at the same time. However, automated testing takes longer to set up.

Reusable test cases

This is important for software that is frequently modified. Once written, the test scripts can be reused as many times as needed

Expenses for automated testing tools

Automated testing tools are usually expensive, but are a reasonable long-term investment. They work perfectly with software that needs to be tested frequently.At the same time, they aren’t a good solution for one-time testing. Preparing the use-cases can take longer than manual testing. Add to this the price of automated testing tools, and you’ll see how much resources can be wasted if you don’t analyze the case before choosing the testing strategy. 

Results sharing

Manual testing usually involves one person who executes the test, and only this person sees the results. Automated testing is better for larger teams since the system retains all the test results and enables these to be shared with everyone involved in testing and bug fixing.  

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Read 966 times Last modified on Monday, 20 August 2018 12:12

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