What is Software testing life cycle?

“No amount of testing can prove a software right, a single test can prove a software wrong.”— Amir Ghahrai. A leading name in Quality assurance and testing has quoted this with his personal experience of putting years in Software testing. 

But if we go by the quote it precisely says how testing can prove the quality of software. On the same grounds, we would agree that testing will give you a reality check of your application before it gets awry. And enterprises can take up QA testing services for their businesses.

Testing can give your  business a real picture of your application if you miss the testing process. So, if we think of the repercussions of what eliminating testing can bring to your business, then it would be a nightmare to discuss for years. Better is to look at the brighter side and think, what if we place testing procedures at the right place, What are the benefits that we can receive?

If you are a business who is not aware of what STLC is,then you must definitely check this blog. This will give you a broader perspective of how and why you must look for a software testing life cycle. So, let’s get started with the rigorously understanding Software testing life cycle.

1. Software Testing Life Cycle

Unlike the software development lifecycle, the software testing lifecycle has different elements but the approach is the same. As SDLC stands for Software development life cycle, similarly, STLC stands for Software testing life cycle. STLC is a set of activities that is carried out sequentially during the testing process. This verifies that the software quality and the standard expectations are satisfied. The verification and validation  of the app development is also part of the STLC process. If you know,  then software Testing is not a single operation, contrary to common assumption. It entails a set of procedures that is carried out in a special method to assist in getting your software product tested right. You might have seen different STLC services offered by a single software testing company.

There are different stages of STLC such as planning, control, implementation, standardization, and so on. These are some of the set measures of STLC. Apart from this, there is involvement of other elements as well such as test execution, test coverage, test cases,  test case report and in STLC. As a result, if you think STLC has limited functions and operations, then you are probably wrong. Because, STLC has other responsibilities too other than just testing the developed product.  such as

  • In STLC, you perform testing at all the stages,hence eliminating the possibility of maximizing errors. You can identify the errors at early stages which is more beneficial for improving the process management
  • Secondly, now you have all the control over the quality of product that’s created with the testing team making the most of Agile, Scrum, SAFe, and other similar methodologies.
  • This will not just ensure quality at the end but at every nook and corner of software application.

2. What is the Function of Software Testing Life Cycle(STLC)?

Now that we know what the software testing life cycle is capable of. Let’s look at why it’s so important to perform testing. Even if a company employs the greatest programmers and developers, humans are prone to make errors and it’s completely alright. STLC will make a difference. The fundamental rule of STLC’s is to identify and correct errors. The basic objective of an STLC is to keep product quality high.

Nowadays,testing is not just correcting errors, it’s about finding it at the right time, taking the right call and eliminating it from the root. STLC function is to manage and test apps from planning stage, researching, execution and every other crucial step that makes the process easier.

When we see SDLC , it ensures the development is faster and efficient While all the attributes  and test data in STLC assures the application is reliable, sustainable, high performing and multi-functional. STLC ensures you have a test plan in place and as per the plan, you can create a roadmap of your test strategy.

STLC assists in the enhancement of these qualities and the delivery of an excellent end-product. In the long term, a high-quality product results in cheaper maintenance expenses. To lure new users, an application or software reliability is essential. Aside from that, consistently reliable items aid in the retention of existing customers. 

3. Difference between STLC and SDLC

The way of consumption makes both STLC and SDLC different. STLC is inside the process of SDLC(software development life cycle). SDLC is responsible for a product’s whole path from conception to completion. Testing is one of the most essential aspects of the SDLC process.The SDLC includes software testing. And this component has its own life cycle, known as STLC.  but it is very important for us to know that there is a good amount of difference between these two methods. So, its time we must know what’s the difference between SDLC and STLC?

We will start with SDLC. It focuses on the creation of a product This means it entry and exit criteria that start with the understanding of consumer needs and creating a product that is beneficial to them. SDLC covers aspects before the testing phase. In the SDLC steps, it includes testing as a phase in development.The end aim is to deliver a high-quality product that people can utilize.  While for STLC, the test plans come with entry and exit criteria and benchmark to meet the standards. It basically pulls off the requirements and concentrates on product testing. There are entry and  exit criteria involved when you test a specific test case. A product of the SDLC process necessarily requires understanding the product’s development needs. They need to ensure that it performs as anticipated. The major difference is after the SDLC phases are finished, the STLC phases begin. The ultimate aim is to discover flaws in the product and submit them to the development team so they can be fixed.

4. Phases Involved in STLC

4.1 Requirement Analysis

The accessible specs and requirements must be seen, studied, and analysed by your software testers. The test case development needs must be crystal clear so as to meet the test closure report and standards. In this phase, you will start with feeding them with input data and some needs to create results. These are requirements that can be tested. Testers examine both the functional and non-functional requirements . If they follow that, they must choose testable requirements. In this phase itself, you need to understand if your app is in ideal state or not. Then check feasibility of automated testing or manual testing, whichever is suitable as per the plan.

Once you get the requirements clear, it is time to plan the software testing life cycle.

4.2 Test Planning

The QA team produces the second phase, test planning, after assessing all of the essential testing requirements. After gaining a thorough grasp of the product domain, they define the scope and objectives. The team then creates a plan by analyzing the risks and defining time schedules and testing environments. You must finalize the tools for software testing and assign the roles and duties to the resources.  Now, they can document the whole testing process in a single test plan, that will describe the agenda of each test scenario and check if the test results of each part is met or not in the software testing process.

4.3 Test Case Development

Testers create and develop test cases based on the test planning. These test cases should be comprehensive and cover almost all conceivable scenarios. The business must be able to prioritize these test cases by determining which are the most prevalent or which would have the most impact on the product. In the documentation step, the defined requirements are verified and validated.  The validation and verification process checks all the required sequence, updates define the pipeline of how the test team will interact. Then, on the basis of that they apply the testing strategy.

4.4 Test Environment Setup

Test environment setup is the fourth phase. For executing created test cases, testing activities require specific environmental elements, such as servers, frameworks, hardware, and software. The major components of the test environment setup phase include software and hardware configuration, as well as test data preparation. The test team studies all the requirements to perform testing. Later they will provide problem reporting tools to your testers. The test environment details will showcase the type of configuration setup each case will require.

4.5  Test Execution

When the team has completed all of the preceding steps including test case development and test environment setup, the application is ready for testing. The testers carry out test cases in accordance with the test plan. They also report problems by identifying, detecting, and logging flaws. The team is also in charge of comparing predicted results to actual results. If any issues are discovered, they must record it in order and forward it to the development team for a fix. Regression testing ensures that the software or application continues to function even after the modification. After a problem is repaired, retest the entire product. It’s also advised to utilize scripts or automated testing tools because the same tests must be run again after each change and release.

4.6 Test Cycle Closure

This last phase of this cycle is to bring a closure to the test execution phase and includes the  preparation of a test closure report.The test closing phase begins when the test execution is completed and the final product is delivered. The QA team examines the test closure report and confers with the rest of the team. Product quality, test coverage, and project cost are among the key criteria they evaluate. If there is a difference between the estimated and actual numbers then the tester has to go back to the procedures and check , analyze and correct them.

5. Conclusion

This entire blog has shown the gist of how STLC works for businesses. We have given a comprehensive overview on how software testing life cycle is different from SDLC, what is the difference, and what are its agenda. There are multiple types of software testing that one can perform as a business and we know which one to choose for your ideal application. A good testing method boosts business results and thus, we highly advise businesses to keep their eyes on the rock(testing) while it’s sure they will get profitable results with STLC.

Itesh Sharma

Itesh Sharma is core member of Sales Department at TatvaSoft. He has got more than 6 years of experience in handling the task related to Customer Management and Project Management. Apart from his profession he also has keen interest in sharing the insight on different methodologies of software development.


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