Software testing is my passion
API testing is an essential part of the software development lifecycle, focusing on the communication and data exchange between different software systems. It verifies that APIs are functioning correctly and meeting performance, reliability, and security standards. Using C# with the RestSharp library simplifies the process of interacting with RESTful APIs by providing an easy-to-use interface for making HTTP requests.
Introduction
In today’s fast-paced software development environment, manual test case generation struggles to keep up with the ever-increasing complexity of systems, especially in Agile and DevOps-driven projects. AI-driven test case generation has emerged as a powerful solution to streamline and automate this process, leveraging artificial intelligence and machine learning (ML) to improve test accuracy, efficiency, and coverage.
This lecture will explore AI-driven test case generation, how it works, its advantages and challenges, and its application in modern testing environments.
AI-driven test case generation automates the creation and optimization of test cases using AI techniques such as machine learning (ML) and natural language processing (NLP). By analyzing historical data, code structure, requirements, and user behavior, AI tools can produce test cases that cover critical functionalities, saving time and effort for testing teams.
Instead of manually writing test cases based on predefined requirements, AI-driven approaches can dynamically generate tests that adapt to the code, highlighting the most important areas to test, and identifying risks that human testers might overlook.
AI-driven test case generation is transforming how software testing is performed. By leveraging AI’s ability to analyze data, adapt to changes, and optimize testing efforts, teams can increase test efficiency, improve coverage, and reduce the time and cost of testing. However, while AI offers many advantages, it requires proper setup, high-quality data, and a clear strategy to maximize its benefits.
Incorporating AI in test generation is becoming essential in today’s fast-evolving software landscape, especially in Agile and DevOps workflows.
Visual Studio offers a feature called “Paste Special” that allows you to easily generate C# classes from JSON objects. This is particularly useful when working with web APIs or any JSON data, as it automates the creation of data models that match the JSON structure.
MyClass.cs).
In the dynamic world of software development, Agile methodology has become the gold standard for delivering iterative, customer-centric products. While Agile emphasizes collaboration, flexibility, and continuous delivery, one critical element often underestimated is the role of Software Quality Assurance (SQA).
Far from being a traditional gatekeeper at the end of the development cycle, SQA in Agile is a continuous, collaborative force that ensures product quality from Day 1. Here’s how SQA contributes meaningfully across the Agile lifecycle:
In Agile, quality is everyone’s responsibility—but SQA takes the lead from the start. Testers participate in sprint planning, backlog grooming, and story estimation, ensuring that acceptance criteria are testable and clear.
Benefits:
Agile favors rapid iteration. That’s where continuous testing comes in. SQA builds and maintains test automation frameworks that run across CI/CD pipelines, enabling fast feedback loops.
Key practices:
In Agile, SQA doesn’t work in silos. Instead, testers collaborate closely with developers, product owners, and UX designers in a shared sprint team. They raise concerns proactively, influence technical decisions, and advocate for testability.
Contributions include:
Beyond scripted tests, SQA performs exploratory testing to uncover edge cases and usability flaws that automated scripts might miss. Agile welcomes changing requirements, and exploratory testing is agile enough to keep up.
Impact:
Each Agile sprint ends with a retrospective. SQA contributes by analyzing defect trends, test effectiveness, and root causes. This feedback loop helps the team refine processes, tools, and test strategies over time.
Common SQA metrics in Agile retros:
SQA identifies risks early—not just technical bugs, but also requirements volatility, environmental instability, and integration complexity. They ensure mitigation strategies are in place before these risks snowball into blockers.
Tools and techniques:
In Agile, success is measured by working software that delivers value. SQA bridges the gap between business and technology by:
In Agile, Software Quality Assurance is not a phase—it’s a mindset.
SQA professionals play a strategic role in maintaining speed without sacrificing quality. By embedding testing within sprints, collaborating continuously, and leveraging automation and feedback, SQA helps Agile teams build better, faster, and smarter software.
In the end, it’s not just about catching bugs—it’s about delivering confidence with every sprint.
In today’s interconnected software ecosystems, APIs (Application Programming Interfaces) are the backbone of communication between services. Ensuring their performance, security, and functionality through API testing is critical. Whether you’re a developer, QA engineer, or tech enthusiast, understanding the spectrum of API testing techniques helps deliver robust and reliable software.
This guide explores the 15 essential types of API testing, complete with descriptions, workflows, and their unique purpose.
Purpose: To verify if the user interface that interacts with the API works correctly.
Purpose: To ensure each API function performs as expected.
✅ Best For: Verifying correctness of API responses.
Purpose: To check API behavior under normal or peak load conditions.
Purpose: To evaluate API stability under extreme or high load conditions.
Purpose: To check if the basic functionality of the API is working.
Purpose: To test data flow between multiple modules or services using APIs.
Purpose: To ensure the final product meets business and functional requirements.
Purpose: To test the API’s resilience to unexpected or invalid data.
Purpose: To identify vulnerabilities and protect data integrity.
Purpose: To confirm recent changes didn’t break existing features.
Purpose: To identify runtime issues, errors, or performance glitches.
Purpose: To verify if APIs work well with diverse systems or environments.
Although already mentioned above, this type plays a vital part in every build/deployment pipeline, especially during CI/CD where a quick validation saves time.
Even though UI testing is typically separate, modern testing often involves correlating UI interactions with API responses to ensure true end-to-end validation.
API testing should not be siloed. Real success lies in orchestrating various test types together—e.g., running regression tests after load tests, or security checks during integration cycles.
Popular Tools:
Conclusion:
API testing is more than just calling endpoints. It’s a multifaceted approach involving performance, security, reliability, and usability. Mastering these 15 types of API tests empowers you to build future-ready applications that scale confidently and perform under pressure.
Below is the text box and the corresponding HTML:
If I used sendkeys, sometimes it may not working
driver.findElement(By.name(“mainphone”)).sendKeys(“(02)2222-2222”);
driver.findElement(By.id(“mobilephone”)).sendKeys(“05-5555-5555”);
If sendkeys() methods are not working then use following two ways to input text:
Before sendkeys() use click() method to click inside textfield i.e:
driver.findElement(By.name("mainphone")).click();
driver.findElement(By.name("mainphone")).sendKeys("(02)2222-2222");
driver.findElement(By.id("mobilephone")).click();
driver.findElement(By.id("mobilephone")).sendKeys("05-5555-5555"); Hi guys, I am going to run a test mobile emulator with selenium and VS C#
Import
using System;
using System.Threading;
using NUnit.Framework;
using OpenQA.Selenium;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium.Chrome;
Driver Utils Class
First of all delclaring the webdriver, which will be used for open specfic browser
namespace SeleniumAutomation
{
[TestClass]
public class Setup
{
IWebDriver webDriver;
}
}Open Chrome
[Test]
public void Open_Browser()
{
webDriver = new ChromeDriver();
}Open Chrome Mobile Emulator
[Test]
public void Mobile_Emulator_Browser()
{
ChromeOptions chromeCapabilities = new ChromeOptions();
chromeCapabilities.EnableMobileEmulation("Pixel 5");
webDriver = new ChromeDriver(chromeCapabilities);
}I think it will be helpful to run chrome in mobile emulator
Software testing has transformed rapidly with the rise of automation, agile, AI, and complex digital ecosystems. A test professional today is no longer limited to clicking through test cases—they are expected to be problem solvers, communicators, coders, and sometimes even data analysts.
The infographic below shows a breakdown of the most critical testing skills, based on industry-wide feedback.
With constant software releases, test professionals need to ensure quality without slowing down development. That means:
These skills help testers not just find bugs—but prevent them.
Here’s a detailed look at what each skill means and why it matters:
📍 Why it’s critical:
Testers must clearly document bugs, write test cases, and explain defects to developers and stakeholders. Good communication prevents misunderstandings and keeps the team aligned.
📍 Why it’s critical:
Manual testing can’t scale. Knowledge of automation frameworks like Selenium, Cypress, or Playwright is essential. Scripting in languages like Python, Java, or JavaScript can save hours of repetitive work.
📍 Why it’s critical:
Understanding black-box, white-box, regression, smoke, and exploratory testing helps testers select the right test at the right time.
📍 Why it’s critical:
Modern testers must understand HTML, CSS, and JavaScript to validate front-end issues or debug problems in browser-based apps.
📍 Why it’s critical:
More apps rely on microservices and APIs. Testers need tools like Postman, REST Assured, or Karate to test APIs for performance, reliability, and correctness.
📍 Why it’s critical:
Testers play a role in identifying vulnerabilities—such as XSS, injection attacks, or broken authentication—before attackers do.
📍 Why it’s critical:
Testers in Agile teams need to test early and often, work in sprints, and use practices like TDD (Test-Driven Development) and CI/CD pipelines.
📍 Why it’s critical:
Users expect fast apps. Testers use tools like JMeter, Gatling, or k6 to simulate thousands of users and ensure the app can handle peak loads.
📍 Why it’s critical:
Testing on Android and iOS requires mobile-specific knowledge (e.g., gestures, screen sizes, emulators, Appium automation).
📍 Why it’s critical:
Testers with empathy and business understanding catch real-world bugs—issues a user would actually care about.
| Skill | Use Case |
|---|---|
| Data Analysis | Understanding logs, charts, trends for performance and issue tracking |
| Cloud Testing | Testing apps deployed in AWS, Azure, GCP |
| Microservices Testing | Ensuring independent services communicate reliably |
| Big Data Testing | Validating high-volume, high-velocity data pipelines |
| IoT Testing | Testing smart devices and networks |
| AI/ML Testing | Verifying predictions, fairness, and performance of AI models |
| Operations Management | Coordinating test environments, deployments, and reporting |
Reports play a fundamental role when it comes to TESTING. Tester can now know the real-time reports of test suit execution. Reports made ease to know the ratio of Pass? Or Fail? Post-test suit execution and it is the only documentation to know about test execution results.
Everyone wish to see the detailed description of the test results. Don’t you? here is the solution for it. And, let us see how these reports can be achieved? in Selenium C# – NUnit framework automation testing.
To achieve detailed test execution results as HTML reports we need to rely on third party tool called => Extent Reports. These reports provide decent narration of test execution results and are depicted in PIE chart.
How to Reference Extent Reports in MS Visual Studio
Extent Reports can be directly referenced via NuGet Gallery:
Step 1) Project> Manage NuGet Packages
Step 2) In the next window
Step 3) Install selenium support from NuGet package
Step 3) Click ‘I Accept’
Step 4) Create a new C# class with the below code for Extent Reports.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenQA.Selenium;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium.Chrome;
using NUnit.Framework;
using NUnit.Framework.Interfaces;
using NUnit;
using AventStack.ExtentReports.Reporter;
using AventStack.ExtentReports;
using System.IO;
namespace RnD
{
[TestFixture]
public class TestDemo1
{
public IWebDriver driver;
public static ExtentTest test;
public static ExtentReports extent;
[SetUp]
public void Initialize()
{
driver = new ChromeDriver();
}
[OneTimeSetUp]
public void ExtentStart()
{
extent = new ExtentReports();
var htmlreporter = new ExtentHtmlReporter(@"D:\ReportResults\Report" + DateTime.Now.ToString("_MMddyyyy_hhmmtt") + ".html");
extent.AttachReporter(htmlreporter);
}
[Test]
public void BrowserTest()
{
test = null;
test = extent.CreateTest("T001").Info("Login Test");
driver.Manage().Window.Maximize();
driver.Navigate().GoToUrl("http://testing-ground.scraping.pro/login");
test.Log(Status.Info, "Go to URL");
//provide username
driver.FindElement(By.Id("usr")).SendKeys("admin");
//provide password
driver.FindElement(By.Id("pwd")).SendKeys("12345");
try
{
WebDriverWait wait = new WebDriverWait(driver, TimeSpan.FromSeconds(1));
wait.Until(ExpectedConditions.ElementIsVisible(By.XPath("//h3[contains(.,'WELCOME :)')]")));
//Test Result
test.Log(Status.Pass, "Test Pass");
}
catch (Exception e)
{
test.Log(Status.Fail, "Test Fail");
throw;
}
}
[TearDown]
public void closeBrowser()
{
driver.Close();
}
[OneTimeTearDown]
public void ExtentClose()
{
extent.Flush();
}
}
}
Post running test method, the test execution report looks as shown below:
Create a new project in Visual Studio:
Step 1) In the File Menu, Click New > Project
Step 2) In the next screen
Step 3) The below screen will be displayed once the project is successfully created.
Step 1) Navigate to Project-> Manage NuGet Packages
Step 2) In the next screen
Step 3) The below message will be displayed once the package is successfully installed
Step 1) Navigate to Project-> Manage NuGet Packages
Step 2) In the next window
Step 3) The below message will appear once the installation is complete.
Please note that the below steps work only for 32-bit machines. For 64-bit machines, you need to download the ‘NUnit3 Test Adapter’ by following the same process as mentioned below.
Step 1) Navigate to Project-> Manage NuGet Packages
Step 2) In the next window
Step 3) Once install is done you will see the following message
Step 1) Navigate to Project-> Manage NuGet Packages
Step 2) In the next window
Step 3) System may asked for permission. Click on ‘Yes to All’
Step 4) The below message will appear once the installation is complete.
Selenium with NUnit framework allows differentiating between various test classes. NUnit also allows using annotations such as SetUp, Test, and TearDown to perform actions before and after running the test.
NUnit framework can be integrated with Selenium by creating a NUnit test class and running the test class using NUnit framework.
The below are the steps needed to create and run a test class using NUnit framework.
Step 1) In the Solution Explorer, Right clicked on project > Add > Class
Step 2) Class creation window will appear
Step 3) The below screen will appear.
Step 4) Add the following code to the created class. Please note that you need to specify the location of ‘chromdriver.exe’ file during chrome driver initialization.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenQA.Selenium;
using OpenQA.Selenium.Support.UI;
using OpenQA.Selenium.Chrome;
using NUnit.Framework;
using NUnit.Framework.Interfaces;
using NUnit;
namespace RnD
{
[TestFixture]
public class TestDemo1
{
public IWebDriver driver;
[SetUp]
public void Initialize()
{
driver = new ChromeDriver();
}
[Test]
public void BrowserTest()
{
driver.Manage().Window.Maximize();
driver.Navigate().GoToUrl("https://www.google.com/");
}
[TearDown]
public void closeBrowser()
{
driver.Close();
}
}
}
Step 4) Click on ‘Build’ -> ‘Build Solution’ or keypress ‘Ctrl + Shift + B’
Step 5) Once the build is successful, we need to open the Test Explorer window. Click on Test -> Windows -> Test Explorer
Step 6) Test Explorer window opens with the list of available tests. Right-click on Test Explorer and select Run Selected Tests
Step 7) Selenium must open the browser with specified URL and close the browser. Test case status will be changed to ‘Pass’ on the Test Explorer window.
