Manual Testing Vs Automation Testing| How its Work [ OverView ]

• In this article you will learn:
• 1.What is Manual Testing?
• 2.What is Automation Testing?
• 3.Manual Testing Vs Automation Testing.
• 4.Conclusion.

What is a Manual Testing?

• Manual testing is a testing of a software where tests are executed a manually by a QA Analyst. It is performed to discover a bugs in software under development.
• In a Manual testing, the tester checks all an essential features of a given application or software. In this process, software testers are execute the test cases and generatea test reports without help of any automation of software testing tools.
• It is the classical method of all the testing types and helps find bugs in a software systems. It is a generally conducted by an experienced tester to accomplish a software testing process.

What is an Automation Testing?

• In a Automated Software Testing, testers write a code/test scripts to automate a test execution. Testers are use appropriate automation tools to develop a test scripts and validate software. The goal is to complete a test execution in the less amount of time.
• Automated testing is based entirely on a pre-scripted test that runs automatically to compare the actual results to the expected results. This helps the tester to find whether or not a application performs as be expected.
• Automated testing allows to execute a repetitive task and regression test without an intervention of manual tester. Even though all the processes are performed an automatically, automation requires some manual effort to create the initial testing scripts.

Manual Testing Vs Automation Testing:

Parameter	Automation Testing	Manual Testing
Definition	Automation Testing uses an automation tools to execute a test cases.	In a manual testing, test cases are executed by the human tester and software.
Processing time	Automated testing is a significantly faster than manual approach.	Manual testing is a time-consuming and takes a human resources.
Exploratory Testing	Automation does not allow the random testing.	Exploratory testing is a possible in a Manual Testing.
Initial investment	The initial investment in an automated testing is be higher. Though a ROI is better in a long run.	The initial investment in a Manual testing is comparatively lower. ROI is a lower compared to Automation testing in long run.
Reliability	Automated testing is the reliable method, as it is performed by a tools and scripts. There is no testing Fatigue.	Manual testing is not as an accurate because of possibility of human errors.
UI Change	For even trivial change in an UI of the AUT, Automated Test Scripts need to be modified to be work as an expected.	Small changes like a change in id, class, etc. of button wouldn’t thwart execution of manual tester.
Investment	Investment is need for testing tools as well as an automation engineers.	Investment is needed for a human resources.
Cost-effective	Not cost effective for a low volume regression.	Not cost effective for a high volume regression.
Test Report Visibility	With an automation testing, all stakeholders can login into a automation system and a check test execution results.	Manual Tests are usually recorded in an Excel or Word, and test results are not be readily/ readily available.
Human observation	Automated testing does not be involve human consideration. So it can never be give assurance of a user-friendliness and positive customer experience.	The manual testing method allows a human observation, which may be useful to offer user-friendly system.
Performance Testing	A Performance Tests like a Load Testing, Stress Testing, Spike Testing, etc. have to be tested by the automation tool compulsorily.	Performance Testing is a not feasible manually.
Parallel Execution	This testing can be executed on a various operating platforms in a parallel and reduce test execution time.	Manual tests can be executed in a parallel but would need to increase the human resource which is an expensive.
Batch testing	Can Batch the multiple Test Scripts for a nightly execution.	Manual tests are cannot be batched.
Programming knowledge	Programming knowledge is the must in automation testing.	No need for a programming in Manual Testing.
Set up	Automation test needs a less complex test execution set up.	Manual testing needs have a more straightforward test execution setup.
Engagement	Done by a tools. Its an accurate and never gets bored.	Repetitive Manual Test Execution can get a boring and error-prone.
Ideal approach	An Automation testing is a useful when frequently executing a same set of a test cases.	Manual testing proves the useful when test case only needs to run a once or twice.
Build Verification Testing	Automation testing is a useful for a Build Verification Testing (BVT).	Executing a Build Verification Testing (BVT) is more difficult and time-consuming in manual testing.
Deadlines	Automated Tests have a zero risks of missing out pre-decided test.	Manual Testing has higher risk of missing out a pre-decided test deadline.
Framework	Automation testing uses a frameworks like a Data Drive, Keyword, Hybrid to accelerate the automation process.	A Manual Testing does not use frameworks but may use a guidelines, checklists, stringent processes to draft certain test cases.
Documentation	Automated Tests acts as document provides a training value especially for automated unit test cases. A new developer can look into the unit test cases and understand a code base quickly.	Manual Test cases are provide no training value.
Test Design	Automated Unit Tests an enforce/drive Test Driven Development Design.	Manual Unit Tests do not drive design into a coding process.
Devops	Automated Tests help in a Build Verification Testing and are integral part of DevOps Cycle.	Manual Testing defeats a automated build principle of DevOps.
When to Use?	Automated Testing is a suited for Regression Testing, Performance Testing, Load Testing or be highly repeatable functional test cases.	Manual Testing is a suitable for Exploratory, Usability and Adhoc Testing. It should also be used where are AUT changes frequently.

Conclusion:

The differences between the manual testing and automation testing both are a suitable for a various tasks. There are various scenarios in which both of them could be excel.