7 Best Practices You Can Consider for Functional Testing

By Prometteur solutions 17 Min Read

Testing is an important part of software development, and it’s something that you should be doing from the very beginning of your project. Testing software is essential for ensuring that it functions as intended and meets the requirements of the users.  Following functional testing best practices is an important part of software development, and it’s something that you should be doing from the very beginning of your project. Testing software is essential for ensuring that it functions as intended and meets the requirements of the users. It helps to find and fix defects in the software before they cause any problems for the users.

Functional testing is a type of software testing which focuses on the behaviours of software. It is often referred to as black box testing, because it is an external code test of the functionality of the software. It does not typically test for bugs, but for functionality.

Functional testing is among the earliest and most fundamental forms of testing, alongside security testing, integration testing, etc. It examines the software’s capabilities in every way imaginable. It entails trying out every possible failure and boundary circumstance.

Testing software is essential for ensuring that it functions as intended and meets the requirements of the users. Observing functional testing best practices requires inputs to be given, outputs to be observed, and then the results of the two to be compared. 

Functional testing best practices. To master it, you need to be patient, practice, and work hard, despite the fact that it appears simple. Testing is an important part of software development, and it’s something that you should be doing from the very beginning of your project. 

Functional testing best practices is essential for ensuring that it functions as intended and meets the requirements of the users. It helps to find and fix defects in the software before they cause any problems for the users.

What is functional testing?

Functional testing is the process of testing a product or system to ensure that it meets the required specifications. Functional testing best practices includes verifying that all features are working as intended, checking for any errors, and ensuring that the system meets regulatory requirements

What Are The 7 Functional Testing Best Practices?

Required Information

A crucial aspect of functional testing best practices lies in the clarity of what we are testing. Before delving into test execution, having a well-defined and comprehensive plan is essential, as it grants us a clear perspective of our objectives. To ensure we are equipped with the necessary insights, we collaborate closely with the development team, gathering information about crucial user commands and processes. Armed with this valuable data, we embark on testing the key aspects that define our software’s functionality.

In the pursuit of excellence, functional testing best practices underline the importance of aligning our efforts with market demands. Understanding the landscape of product development enables us to discern the most vital areas that warrant thorough testing. To achieve this, we meticulously create a document or matrix that establishes the linkage between our product and the requisite requirements and test cases. With this matrix in place, we can effectively adapt and modify it in response to any evolving requirements, ensuring our testing remains dynamic and precise.

Make a Test Plan and Test Cases

This is one of the functional testing best practices  that includes preparations for conducting the actual test. Test objectives, scope, participants, timing, required hardware and software, and total number of test cases should all be part of the planning process.

The test cases we’re discussing here are examples of input data that are grounded in the functional specification. These situations should be organised and scheduled according to priority in order to decrease time and danger. When all is said and done, the development staff should examine these blueprints.

Test Execution

There needs to be congruence between the test plan and the functioning system itself for the test to be run successfully. Test execution is onne of the functional testing best practices and the best test cases are those that can be easily updated as the product evolves. The challenges encountered and their resolutions might be recorded for later examination.

Consider Automated Testing

Automated testing is another significant functional testing best practices. Defects, performance, security, usability, and other qualities can all be tested using automation. For instance, using tools like Selenium and WebDriver, automated testing can be used to check the functionality of a website. Take into account automating your software development process if you are new to automated testing.

For testers who don’t have the time to sit down and create tests, automated testing is a fantastic idea. For people who are working in a group or with a partner, this is a wonderful choice. The benefit of automated testing is that you can schedule the test to run continuously without worrying about interruptions. Additionally, it is simpler to alter existing tests and add new ones to the system when needed.

As you consider functional testing best practices, remember that what should be automated is entirely up to you as the tester to decide.

Automated testing requires a larger initial expenditure, but its long-term advantages for the product outweigh those expenses. Stick with manual testing when it can complete a task just as well as or better than automation.

Manage the defects

If several people are working on the same functional element, defect reports may appear repeatedly. There may also be other issues, like ignoring defects or treating them improperly. Functional testing best practices must be used to maintain a decentralised database that anybody may access in order to avoid this.

There are established forms with these functional testing best practises for logging and validating issues, allocating and monitoring work, and ranking issues that have been documented. This is beneficial for dealing with problems one at a time.

Test Reports

Always give clear, concise, and accurate reports of software test results, it is important to make sure that the testers are well-informed. It is also important to make sure that the testers know how to properly write their test reports. 

Wondering what to consider when writing your test reports? We lined them up below;

  • What is the purpose of the test?
  • What was the outcome of the test?
  • What was the design of the test?
  • What were the requirements for the test?
  • What was the context of the test?
  • How did you carry out the test? 
  • What were your findings?
  • The report should cover the following;
  • Summary of all the test cases.
  • Time taken at each step for each function with its progress and status at the time.
  • Details of any new bug found while executing the test.


As a final step, a comprehensive analysis of the whole testing process is required. Product development is enhanced when lessons learned from both triumphs and setbacks are applied.

Functional testing best practices follow different processes that reveal potential issues and solutions in the testing and development phases. It’s useful for enhancing the processes used while creating new products. The success of a product can be aided by thorough analysis.

Functional Testing: Why You Should Do It and What to Expect

When it comes to doing what it takes to ensure you have top quality application, following functional testing best practices is surely one of the most important steps that you can take. It is the process of running your application through its full lifecycle, from design to deployment, to ensure that it works as expected. By performing functional tests, you can find and fix any issues before they cause problems in the real world.

What to expect during a functional test?

If you have a knack for the best quality outcomes, ensuring you adopt the functional test best practices is one of the greatest ways to evaluate how well your website or application works from the user’s point of view. You can simulate user action during a functional test. This will assist you in identifying and resolving any problems before your users encounter them in a live setting.

The user experience should be kept as frictionless as possible during a functional test, which is one of the most crucial considerations. Make sure to test everything, from the login procedure to the search results, because the last thing you want is to confuse or irritate your users.

Even though it may take many hours to complete a functional test, the results are worthwhile. Try it out for the best results.

Tips on how to do better functional testing

Here, we present essential tips to enhance your functional testing endeavors:

Define Clear Goals: Defining your testing goals is one of the functional testing best practices. In other words, it’s vital to establish clear and concise objectives. Understanding what you seek to achieve empowers your testing efforts, transforming them into problem-solving endeavours.

Choose the Right Tools: Just like a detective requires the right tools to crack a case, effective functional testing necessitates the use of appropriate software and tools.This is also among the functional testing best practices. Always ensure you equip yourself with the best tools that align with your website’s specific needs.

Thoughtful Test Planning: When you think of one of functional testing best practices, it should come to your mind that a well-laid plan is the foundation of successful testing. Preparing a comprehensive testing plan in advance enables you to navigate the process seamlessly, avoiding pitfalls and maximising the benefits of your testing efforts.

Systematic Testing: It is one of functional testing best practices to keep up with the testing process on a regular basis because functional testing is an ongoing journey, not a one-off event. Regular testing allows you to identify and rectify issues as they arise, ensuring that your website remains a bastion of seamless performance.

Embrace Patience: As with any meticulous process, functional testing requires patience and attention to detail. Embracing the art and act of patience tops the list of functional testing best practices. Invest the time necessary to thoroughly test your website, leaving no stone unturned in your pursuit of excellence.

Adaptability is Key: According to the functional testing best practices, functional testing is not a rigid, one-size-fits-all approach. Be open to adapting your testing strategy as you gain deeper insights into your website’s behaviour and user interactions.

Keep Records for Learning: It is part of the functional testing best practices to always keep a meticulous record of your testing sessions and the results obtained. These records serve as invaluable learning tools, empowering you to glean insights and improve your website’s performance over time.


Functional testing is a process of exercising the complete functionality of a system under test to ensure that it meets the requirements specified in the system specification. This process is done to find and fix defects in the system before it is released to users.


What Are The 7 Functional Testing Best Practices?

  • Collect all information required
  • Make Test plan/ test cases
  • Execute the tests
  • Consider the automation testing
  • Manage defects
  • Reporting of test results
  • Analysis

What is Functional Testing?

As a subset of software testing, functional testing determines if the features of an application are fully operational. The results of each function are checked against the associated criteria to see if they make sense for the intended audience. Testing is carried out by supplying example inputs, recording the ensuing outputs, and comparing the two to ensure they match expectations.

How is functional testing different from non-functional testing?

Functional testing, in contrast to non-functional testing, does not focus on analysing the code base of an application for bugs or performance issues. Time, scalability, and dependability are not measured. Instead, functional testing checks if the application meets the bare minimum of user expectations by concentrating on the outcomes of processing rather than the mechanics of processing itself.

What Role Do Automated Functional Testing Tools Play?

Tools for functional testing can be programmed to perform actions on the user interface of the software being tested. They are able to choose and interact with on-screen elements such as drop-down menus, text fields, and buttons.

The recorder in many functional test automation tools “watches” the user as they interact with an application and its objects on the screen, recording the information they enter and the actions they do, including clicking buttons or choosing options from a menu.

The user’s actions can be replayed utilising the objects, data, and actions that were recorded at the time of the activity. The automation engineer defines a set of activities to be performed, and the testing tool records the outcomes to compare with the predicted outcomes to decide whether or not the test succeeded.

What Are Some Functional Testing Best Practices?

Create Early Test Cases

Test cases should be created before application or module coding is complete. User needs are freshest early in the project. Modify test cases as needed.


Functional testing is tedious and time-consuming. Automation speeds up functionality verification, problem detection, and test time and cost savings. Automating the most critical test cases helps boost test ROI.

Understand User Thinking

Functional testers must understand end-user thinking. Application users vary (buyers, sellers, administrators, data entry clerks, supervisors, etc.). Each test strategy must address user types and their application navigation.


Testers have limited resources. Features cannot be tested. High-priority application functions must be tested first.

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