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How To Write Test Cases For Automation? 

Automation Testing is a type of software testing that is done using automated testing tools. It is a test to double-check that the software does exactly what it is designed to do. Automation testing helps us enter test data into System Under Test and compare actual results with the expected results and generate detailed reports. But, automation testing demands lots of investment of money and resources.

In today’s era of agile and continuous integration and continuous deployment, where every minute a code is being developed and tested, automation testing plays a vital role because of its record and replay feature. It helps in doing regression testing where the application is tested with thousands of data without a single human intervention. Automation testing can be done at any time of the day. Scripts are written for automation testing. Automation developers need to know at least one programming language. The main objective of Automation testing is to reduce the number of test cases to be run manually and not to eliminate manual testing.

Why Is Automation Required?

Automation can significantly boost the productivity of the organization. Sometimes an organization doesn’t have enough time and resources to manually pull off the testing task with millions of data, at that time automation testing plays a vital role by significantly reducing the testing time. It can run the tests quickly and efficiently. In SDLC repeated testing is there which calls for executing the same tests over and over again. 

Automation makes it possible, by producing accurate and reliable tests without manual efforts. Automation helps in improving the overall functionality of the software. It also increases the speed of execution and most importantly Test Coverage gets increased. Essentially, the business will be able to work more smoothly with the same number of team members, thanks to automation.

Benefits Of Automation Testing

There are various benefits of Automation testing, a few of which are listed below:-

  • Saves Time and Money:- Automation testing saves money in the long run and is cost-effective. Moreover, it increases the speed of test execution.
  • Less Human Intervention:- With the help of automation testing you can run the test cases any time of the day with minimal or nill human intervention.
  • Less Human error:- automation testing reduces the chance of human error. The main aim of testing is to test bugs and with the help of automation testing bug detection becomes easier.
  • Detailed reports:- Automation testing helps in generating detailed reports. It generates in-depth and highly understandable reports that are not possible in manual testing.

How To Write Test Cases For Automation

One of the most important parts of Automation Testing is to write test cases. Different organizations have varying standards for how to write test cases. Test cases form the basis of testing.

What Is A Test Case

A test case is a type of document which contains the set of data, preconditions, expected results, and postconditions developed for a particular test scenario to verify conformance against a specific requirement.

Let’s have a basic idea of the terminologies associated with writing test cases:

Test Case ID 


Test Case Description

Description of the test case

Test Case Type(Positive Test Case/Negative Test Case)


Test Case Scenario

for scenarios, this test case is tested

Test Data

what data or input was used for test execution


Condition to be fulfilled before executing the test case

Steps for executing the test case

 steps followed to execute the test cases

Expected Result

 How the software is expected to function

Actual Result

How the software works


 Any observation you notice is mentioned here

Points To Keep In Mind Before Writing Automation Test Case

 Automation makes it easier for testers to do their job. It does not replace the testers rather it enhances the testing. Good automation should be an inclusive part of SDLC. Certain points regarding automation should be kept in mind before writing the test cases for the automation:

  • Automation should be focused and not vague.
  • It should be adding value to the organization.
  • It should be informative
  • Automation should be trustworthy. The scripts are written should be trusted.
  • Also, it should be repeatable which is the major use of automation.

When Should Test Cases Be Automated

A test case should be automated if :

  • The test is subject to human error.
  • The test is repetitive.
  • The test is time-consuming.
  • The task is going to get operated on.
  • The test has significant downtime between execution.
  • The requirements, the test, or the task are low risk and are less dynamic.

Which Test Cases Should Be Automated

Teams often want to automate everything. But, it lands them in various problems as there are a lot of risks involved in it. Businesses and stakeholders should deeply analyze the test cases that should be automated and the cases that should not be and cannot be automated.

If you want to automate a complete set of tests then it requires a lot of effort in keeping and maintaining the scripts, which requires an additional amount of money and time. You should always opt for the risk-based approach for writing automation test cases such that you are focusing on automating only the most valuable test cases.

Let’s deep dive into the type of tests that can benefit from automation and should be automated

  • High-risk tests.
  • Repetitive and monotonous test cases.
  • Complex Functionalities test cases. Businesses can automate all tests that require complex functionalities.
  • Extensive test cases that need multiple and huge data sets.
  • Tests that can’t be performed manually take a  lot of time.
  • Tests that might lead to failure because of human error.
  • Performance tests should also be automated. Tests that monitor application performance with millions of data and under different circumstances are perfect for automation testing.
  • Regression tests require the same functionality to be tested multiple times to ensure that any new feature has not impacted the existing functionality. Hence, to reduce repetitive human effort automation is perfect for regression testing. 

Rules For Writing Automated Test Cases

There are certain rules for writing Automated Test Cases. If you follow these rules while writing the test cases then it will lay a foundation of a good automation suite eventually. 

Let’s have a look at the rules:-

  • Prioritize:- Automation testing test cases should be based on prioritizing the functionalities of the software. Start by listing the most important user flows, such as login functionality. Try to sort the test cases depending on the user specification and the flow of the application.
  • Reduce, Recycle, Reuse:- The next step of creating test cases is to break the user scenarios into simple steps which serve a single purpose. Create a test case for every single flow and then compare it with the user stories. The naming convention of the test cases should be proper and as per the standard.
  • Consistency Of the Initials of Test Cases:- Test case initials should be maintained and be consistent throughout while writing the test cases. Since automation tests always repeat the same set of steps, they should always start from the same initial state. Automated test cases depend on the state so it should be consistent for the results to be consistent.
  • Independent and Isolated Tests:- An important point of Test Authoring is to create independent flows. By creating single purpose and self-contained tests you ensure high parallelism which is essential for scaling up the test suites. Concurrency of the test cases reduces the execution time of automation to one minute.
  • Always Use Two-Level Abstractions:-  Automation test cases should be written in a manner that should segregate the low-level implementation with the business logic. If the test case consists of user interaction such as clicks, then something is wrong with the test case.
  • Minimal Use Of Conditions:- A test case should use minimum possible conditional statements (if statements). The test cases that have many conditions can have unpredictable results.
  • Create complex tests from Simple tests:- Complex test cases are created from simple test cases. To make the automation execution smooth, first, run the simple tests and then the complex ones. 
  • Cross Browser Testing For Minimum Failures:- To write effective test cases it is important to keep browser compatibility and differences in mind. Sometimes, one test case will execute in one browser but it might fail in another browser. To solve this problem in automation cross-browser testing is implied.  LambdaTest is a trending cloud-based automated browser testing platform that allows you to perform browser testing for web applications across more than 3000 browsers, operating systems, and devices. It is not only just about cross-browser testing but there are other reasons to love LamdaTest such as Geo Location Testing, Integrated Debugging, and locally hosted web testing

Wrapping Up

To write a good automation suite, one must begin with writing good test cases. In this blog, we mentioned the strategies for writing good automation test cases that will eventually increase the efficiency and quality of the product. 

We hope this guide has helped you find the right path for writing a good automation suite for you. And if you find it valuable, we’d be grateful if you share it on your LinkedIn.

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Tirupati Gumpula

Hi, I'm an Internet geek and founder of Popular technology blogs such as Way to Hunt. & Elite Tricks. Want to promote your brand? Email: [email protected]

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