Software Testing Life Cycle (STLC): Ensuring High-Quality Software

Software Testing Life Cycle (STLC): Ensuring High-Quality Software

what is software testing life cycle

Software Testing Life Cycle (STLC): Ensuring High-Quality Software

Software Testing Life Cycle (STLC): Ensuring High-Quality Software

Software Testing Life Cycle (STLC): Ensuring High-Quality Software


Software Testing Life Cycle (STLC): Ensuring High-Quality Software

Software Testing Life Cycle (STLC): Ensuring High Quality Software

Software engineering’s fast change demands high-quality products. STLCs (Software Testing Life Cycles) ensure software safety, reliability, and performance. STLC promotes bug prevention, security hole discovery, and code enhancement.

Software Testing Life Cycle phases need different resources and outcomes. Product release and pre-testing. STLC is very useful for software developers and programmers.

Developers may miss bugs without code testing. They manually and automatically test the software on several platforms.

We’ll see each step’s duties and implications on software development in this first Software Testing Life Cycle study segment. In today’s fast-paced, high-stakes digital market, software development life cycle (STLC) may benefit professionals.

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Phases of the Software Testing Life Cycle (STLC)

The STLC consists of the following phases, each with its own purpose and activities:

1. Requirement Analysis

Software testing begins with the requirements phase. At this point, the testers will go into the software specs.

What are these requirements? They include both useful & pretty parts of software. Functional requirements, the “what” of software development, explain the program’s expected behavior, functionality, and outcomes.

Non-functional factors describe how fast the software should respond, and how safe and easy it should be to use.

Everything is meticulously tested. They want to know what the software is meant for. Learning what program features customers want is a start.

What is the need for the test? We can make trustworthy test sets because of this.

 To make sure the software doesn’t have any bugs, the test cases must cover all possible situations.


2. Test Planning

Let’s examine software testing’s “test planning” step. Testing begins with a complete test plan.

What all things are included in this phase? This is our software testing method. We create a list of testing goals in this phase.

We list what’s included and what’s excluded. This means deciding how much ground to cover and which parts of the software to test. It’s like picking what to pay attention to.

Next are the test setup and tools. How should the testing environment look? 

Since time is critical, we set a testing schedule. The time and duration of each test is recorded in this list.

 Like our testing schedule.

The last list is of the requirements. The expected output will consist of anything (papers, reports, anything unusual) we find in these tests.

So why all this trouble? We’ll follow the test plan. This ensures no testing step is neglected. We stay focused during the testing because of this.

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3. Test Case Development

Let’s create software tests next. Real test cases are created using the testing team’s experience and imagination.

Last, make a list of test cases. The detailed steps for software testing are listed in it. Their basis are our requirements and testing analysis.

Test cases are stories. They flow through the program’s data, process, and lastly the expected output.

Test cases should cover all app functionality. Our testing must be complete – there should be no chance for any bugs.

If we follow these steps, then our tests definitely test the software thoroughly. Verifying the application’s behavior is like scrutinizing every corner.

Building software is like assembling a jigsaw! Without all the components, you can’t see its full potential.


4. Test Environment Setup

Alright, let me break down the test environment setup phase in software testing. This is a very important step where we set up everything we need to do our tests well.

Think of the test environment as a virtual playground where we’ll be testing our software. But we want this playground to closely resemble the real world – the production environment – where the software will eventually run.

To create this environment: We install the application’s required software first. Like ensuring we have the appropriate tools.

Set up hardware and software dependencies. These are what the application is built on. We want everything ready.

We can’t forget about the test data. To make sure our software works in any kind of situation, we need to test it in all types of situations (that can occur in real life) possible. For this purpose, we need test data. 

This data should be representative of what the actual users will encounter in the real world. Our tests should be like what would happen in real life.

This well-prepared test environment allows us to reliably test the program and confirm that it acts as it will in production.


5. Test Execution

We’ll now do software tests. Action occurs here! We implement the developed test cases.

How do we execute tests? We follow the test scripts—those comprehensive step-by-step instructions we established previously. Functional, performance, security, and usability testing are guided by these scripts.

Functional testing checks whether the program satisfies all criteria and acts as intended.

Performance testing involves stress-testing software. We want it to handle many users and transactions without a problem.

Security testing is like sleuthing for software weaknesses. It must be protected against unauthorized access.

Usability testing, of course, checks software usability. We want to test its user-friendliness.

Tests aim to find software faults, malfunctions, and abnormalities. It’s like detecting minor bugs before the app launches.

These tests guarantee the program is strong, dependable, and ready to satisfy users’ expectations. We want everyone’s application experience to be seamless.


6. Test Reporting

Software test reporting is next. All testing events will be reviewed here.

After completing the tests and incorporating the necessary code into the test scripts, we may generate data for analysis. As a coda, our testing results are presented in these articles.

We are able to monitor the state of testing thanks to these reports.

Like tracking testing progress.

Issue numbers and severity rankings are disclosed. Variations between predictions and actual results will be reported. The gap between the ideal and the real reality is brought into sharp focus here.


7. Test Closure

Software development’s “test reporting” is next. Exam events will be discussed here.

After finishing our tests and adding the necessary code to our test scripts, we’ll start collecting data. 

These reports are very important for testing progress. This might track our testing progress.

Issue magnitude and frequency are indicated. Inspection revealed several faults.

Reports will indicate observations-forecast disparities. Thus, we must concentrate on expectations-reality gaps.


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Benefits of the Software Testing Life Cycle (STLC)

Implementing the STLC brings numerous benefits to software development organizations:


1. Increased Quality of Software

A structured way for testing computer programs is the STLC. 

To address defects, it validates the software against 

1) requirements

2) functionality

3) performance

This ensures the highest quality and customer specific software. 

The STLC develops software holistically, assuring dependability and smooth functioning. It’s a secret method for making perfect software and distributing it.


2. Reduced Costs

Early software development problem identification and remedy. Contributes to development cost reductions.


  • Reduces project expenses.
  • Minimizes resource wastage.
  • Avoids the need for rework or do-overs.


3. Improved Customer Satisfaction

Finding and fixing errors early in software development. Reduces software development costs.


  • Decreases overall project costs.
  • Minimizes the need for rework.


4. Increased Productivity

I’ll show why finding and addressing faults early in the SDLC is crucial. STLC discovers and fixes mistakes before they cost money.

Early defect detection saves loads of money. It’s like correcting a little pipe leak before a deluge. Early problem-solving optimizes resource consumption.

The greatest part: early detection reduces rework. It saves both time and effort, which is always welcome.

Effective testing is cost and time saving.


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Types of Software Testing

Discuss software testing kinds. program testing includes several tests that concentrate on various program features.


1. Functional testing

Functional testing phase commences. It’s goal is to make sure the software functions correctly.

Testing Approach: Verify if software fulfills functional requirements. Test inputs & outputs to confirm functionality.

Scope of Testing: Cover all software features and interactions. Similar to testing each individual feature comprehensively.


2. Non-functional testing

Non-functional testing phase comes after functional testing. Focuses on software’s non-functional aspects.

Testing Focus: Performance, scalability, reliability, usability, and security testing. Evaluates software’s response time, security measures, and user load handling.


3. Acceptability testing 

Acceptability testing is distinct. Carried out by end-users or stakeholders.

Purpose: Focuses on software’s suitability for user needs. Final review before software deployment.


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To summarise, Software testing is an essential part of the SDLC. 

it ensures software’s,

  1. Performance
  2. Reliability
  3. Quality

A thorough, best-practices-based testing methodology may help organizations create high-quality, bug-free software that meets consumers’ needs. 

STLC benefits are,

  1. Better Software
  2. lower operational expenses
  3. pleased clients
  4. higher production

Knowing the SDLC and using suitable software testing may help release software and improve business results.


What are the 7 phases of STLC?

The 7 phases of Software Testing Life Cycle (STLC) include Requirement Analysis, Test Planning, Test Design, Test Environment Setup, Test Execution, Test Reporting, and Test Closure.

What is STLC in agile?

In Agile, STLC focuses on iterative testing, with continuous feedback and integration, aligning testing with development sprints.

What is the entry criteria in STLC?

Entry criteria in STLC are the conditions that must be met before testing can begin, such as availability of requirements and test environment.

What is the difference between SDLC and STLC ?

SDLC (Software Development Life Cycle) is the process of building software, while STLC is specific to testing and includes activities from test planning to closure.




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