Manual VS Automation Testing

Now a days all organization needs software as well as software tester, it’s a huge domain. There is two parts

  1. Manual testing
  2. Automation testing

In current scenario manual tester switching their career in automation as per organization requirement. But still many companies’ only needs resources for manual testing. Mostly it’s varies company to company and their necessities.

Now let’s check Manual Vs Automation Testing

Manual Testing:

Manual testing is one of the most popular and traditional work in all IT sector. Manual testing, test case created manually or by a human. Perform to find out the bugs from software.

Here test case and reports generated by a QA Engineer without any help from tools or script.

Automation Testing:

Automation tester write the code or script to execute the automation test. The three major factor of any project is time, cost and quality. In this case successful automation testing project is to reduce time and cost with maintaining quality output.

Here Top 10 Factors of Manual Vs Automation Testing

Now may you come to know the difference between manual and automation testing, let’s check the advantages and disadvantage of both testing.

Parameters Manual Automation
Definition Human test the software
manually to find out the
Test case executed by
automation tools.
Work source Need more In automation test, need
less work source
Investment Initial investment is less than automation testing as
ROI is lesser than
automation for long run
In automation testing
initial investment is more
than manual testing as
greater ROI for long run
Time consuming More time taking Automation testing is not
time consuming
Cost effective Not cost effective for high volume reversion            Not cost effective for low volume reversion           
Test Report Prominence Basically record present in excel or in word. In automation testing,
anyone can login and
check the execution report.
Human observation Required human
Automation testing does
not allow human
Programming knowledge For manual testing no need of any programming Programming language is must here
Framework         No need of any framework Framework is one of the most important part in
automation. List of framework which are used like Data Drive, Keyword, Hybrid
Design Do not drive design Drive development design
When to use? Manual testing use in light projects like Exploratory, Usability Automation testing uses
specially in Performance
Testing, Load Testing or
highly repeatable
functional test cases.
Which one is interested? Manual test is boring and while testing errors create due to work force Automation test is
interesting and test done by tools. Never get bored.

Advantages of Manual Testing

  1. Manual testing is easy to learn compare to automation
  2. Programming languages are not require
  3. Manual testing can be done on all kinds of applications
  4. It is being preferred for short life cycle product
  5. Manual testing is chosen for newly designed test cases
  6. Application is always tested manually before automation testing is to be done
  7. Manual testing is preferred in the projects where the requirements change frequently or daily basis and for the products where the GUI changes constantly
  8. It is cheaper or economical in terms of initial investment compared to Automation testing
  9. It requires less time as well as expense to begin productive manual testing
  10. It allows the tester to perform ad-hoc testing. If the test cases have to be run a small number of times then manual testing is more likely to be performed
  11. The more time the tester spends on testing, the more is the chances of finding bugs because no machine or tool can match the power of human brain and experience.
  12. lows the tester to do more ad-hoc testing
  13. Trainers are required to give training on automation tools but manual testing is very simple as it can be done by any tester.
  14. Proficiency is required to write a script for automation tools but in manual testing, nothing of this sort is required.
  15. GUI testing can be done accurately with the help of manual testing as visual accessibility and preferences are difficult to automate.
  16. Automation testing cannot replace human intuitions, inferences, and reasoning.
  17. Automation testing cannot be stopped in between, in case any analysis required.

Disadvantages of Manual Testing

Advantages of Manual Testing
  • Manual Testing is time-consuming mainly while doing regression testing.
  • Manual testing is less reliable compared to automation testing because it is conducted by humans. So there will always be prone to errors and mistakes
  • Expensive over automation testing in the long run
  • Manual testing can be very time consuming
  • For the same release, we may need to run some test cases which can be sometimes tiring, this process can be automated with automation tools
  • Manual testing has a high risk of error and mistakes as it is done manually by tester
  • It is not possible to test the entire module manually.
  • Presence of tester in manual testing is required but automated testing can be done 24×7 without any intervention.

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  • Automated testing generates logs and repositories automatically but in manual testing, we need to create the test cases manually
  • Scope of manual testing is very limited but if it is automation testing then the scope is very broad
  • Manual testing is not suitable in very large organizations and time bounded project
  • Performance testing is impossible with the help of manual testing
  • Batch testing cannot be done manually as it is not possible for a human tester to give an output of each and every batch at regular intervals of time.
  • Comparing a large amount of data in case of manual testing is difficult.

Advantages of Automation Testing

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  • Faster Feedback: Automated testing comes as a relief for validation during various phases of a software project. Automation testing improves communication among coders, designers, and product owners, and allows potential glitches to be immediately rectified. Automated testing guarantees higher efficiency of the development team.
  • Accelerated Results: Owing to the quick implementation of automated testing, plenty of time is saved even for intricate and enormous systems. Automation testing allows for the testing to be carried out repeatedly, delivering faster results each time with lesser effort and time.
  • Reduced Business Expenses: It is of no surprise that, while the initial investment may be on the higher side, automated testing helps in saving companies financial resources. This is predominantly due to the sharp drop in the amount of time required to run tests. Automation testing ensures a higher quality of work, thereby decreasing the necessity for fixing glitches after release and reduces project costs.

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  1. Testing Efficiency Improvement: Testing takes up a significant portion of the overall application development lifecycle. It has been seen that even the slightest improvement of the overall efficiency can make a huge difference to the overall timeframe of the project. Although the setup time takes longer initially compared to manual testing, automated tests eventually take up a significantly lesser amount of time. They can be run virtually unattended, leaving the results to be monitored towards the end of the process.
  2. Higher Overall Test Coverage: Through the implementation of automated tests, a number of tests can be executed pertaining to an application. The automated Testing approach helps in leading to higher coverage than in a manual testing approach, which implies a massive team limited heavily with their amount of time. Due to increased test coverage, it leads to testing more features and a higher quality of the application.
  3. Re usability of Automated Tests: Due to the repetitive nature of test automation test cases, in addition to the relatively easy configuration of their setup, software developers have the opportunity to assess program reaction. Automated test cases are reusable as well as can be utilized through different approaches.
  4. Earlier Detection of Defects: The documentation of software defects becomes considerably easier for the testing teams. This fastens the overall development speed while ensuring correct functionality across various areas. The faster a defect is identified, the more cost-effective it is to fix the glitch.
  5. Thoroughness in Testing: Testers tend to have different testing approaches, and their focus areas could vary due to their exposure and expertise. With the inclusion of automation testing, there is a guaranteed focus on all areas of testing, thereby assuring the best possible quality.
  6. Faster Time-to-Market: Test Automation greatly helps in reducing the time-to-market of an application by allowing constant execution of test cases. Once automation testing starts, the test library execution is faster and runs longer than manual testing.
  7. Information Security: The effectiveness of testing will be largely dependent on the quality of the test data you use. Manual Testing creates quality test data which takes time and as a result testing is often performed on copies of live databases. Automation testing solutions can help with creating, manipulating and protecting your test database, allowing you to re-use your data time and again. Automation testing has a huge potential in time and costs savings.

Disadvantages of Automation Testing

Disadvantages of automation testing
  • False sense of quality: Beware of passing tests! This is very much important in verifying functionality at UI or System level. An automated check only checks what is been programmed to check. All automated checks in a test suite can happily pass, but there could be major flaws undetected because the automated check was not supposed to “look” for those failures.

Solution: Automation testing ensure you design good test cases before automating them. In the system level or UI automation testing, always make sure to check for important elements as many things can happen as a result of an action.

  • Not reliable: Automated checks can fail due to many factors. If automated checks keep failing due to issues other than genuine bugs, they can raise false alarms. Automated checks can break because a minor UI change was implemented, or a service is down or there are network issues which are not relevant to the application under test but could impact the automated checks.

The best solution is to aim for a minimum number of failures during each testing in order to get reliable feedback from the automated checks.

Solution: Wherever possible/applicable, try to use stubs to overcome issues with connectivity or changes in the 3rd party systems so the automated checks would be independent of any downstream failures.

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