Everything You Need to Know About Manual Testing

What Does a Manual Tester Do?
A Manual Tester is responsible for checking whether a software application works correctly and provides a good experience for users.

Imagine a software application that contains many features and multiple web pages. When developers create a new feature or page, they hand it over to the testing team for verification.

The Manual Tester carefully tests the module from an end user’s perspective. They check:

• Whether the feature is easy to use
• Whether the design and look are user-friendly
• Whether all functionalities work as expected
• How the application appears on different devices such as mobiles, laptops, and tablets
• How the system behaves when users enter incorrect data by mistake. For example, if a user enters a mobile number in the email field instead of an email address, the tester verifies whether the application shows the correct validation message.

Manual Testers test both:

• Positive Scenarios – checking if the application works correctly with valid inputs
• Negative Scenarios – checking how the application behaves with invalid or unexpected inputs

If the tester finds any issue or unexpected behavior, they report it as a bug/defect with clear details. The development team then reviews the issue and fixes it.

In simple words, a Manual Tester ensures that the software is working properly, is user-friendly, and provides a smooth experience before it reaches real users.

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Why is Manual Testing Important?

Manual Testing helps identify issues that may affect real users. Even if a feature is technically working, testers ensure that it is easy to use, visually correct, and behaves properly in different situations.

Without testing, users may face:

• Application crashes
• Broken functionalities
• Poor user experience
• Security or data issues

That is why Manual Testing plays an important role in delivering high-quality software.

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Skills Required for a Manual Tester

A good Manual Tester should have:

• Strong observation skills
• Basic knowledge of software applications
• Understanding of test cases and bug reporting
• Communication skills
• Logical and analytical thinking

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Simple Real-Time Example

Suppose there is a Login Page in an application.

A Manual Tester will check:

• Login with valid username and password
• Login with invalid credentials
• Empty input fields
• Password visibility option
• Error messages
• Mobile responsiveness
• Button functionality

This helps ensure that users can log in smoothly without facing problems.

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Introduction To Software Testing

Software Testing: 

    Software Testing is the process of verifying that a software application meets the specified requirements and works as expected. The main goal of testing is to ensure that the final product is free from defects and performs reliably in real-world conditions.

    By conducting software testing, any bugs or errors in the application can be detected and resolved early in the development cycle, preventing issues before the product is delivered to users.

Importance of Software Testing

A thoroughly tested software product ensures:

• Reliability - The software performs consistently under different conditions.
• Security - The system is protected form vulnerabilities and data breaches.
• High Performance - The application runs smoothly and efficiently.

Overall, software testing helps achieve time savings, cost-effectiveness and greater customer satisfaction.

Manual Testing: 

    In the Manual Testing, we will write some test cases (A document with an expected result -user action and its sub-sequence result) based on the client requirements and execute these test cases manually in the application and verify the actual behaviour of the application we respect to the given expected results.

    

    Manual testers workflow: Requirements -> Analysis -> Test cases -> Execute Test cases against the build deployed by the developer.

Automation Tester:

    Automation testing is done by the tools. Here they going to give all the requirements about the project in script format to that tool. The tool interacts with that application and it will give the output. Automation testing is mainly used for Regression.

- These people get KT from the manual tester (How we execute the test cases on the browser).

- After manual testing is done by the manual tester, then they analyze the test cases.

- Then they start development Scripts.

- Execute these Scripts against the build deployed by the developer

The objective of Automation Testing:

- To identify the defects.

- To reduce manual testing activities and redundant test operations using a Systematic solution to achieve better testing coverage. 

- To speed up a software testing process, and to reduce software testing cost & time during a software life cycle. 

- To increase the quality & effectiveness of a software test process by achieving Predefined test criteria in a limited schedule.

When to Use Automation Testing:

- The repetitive tasks are boring or tend to cause human errors.

- Relatively stable areas of the application over volatile ones must be automated. 

- Application with multiple releases / Builds. 

- The application where long & iterative Regression testing cycles are required.

 

When to not use Automation Testing:

- Unstable Application: If the application is frequently changing, automation script may become outdated quickly, leading to high maintenance costs. 

- Tests without Predictable results (Expected results): Automation work best when there are clear expected outcomes. If test results vary unpredictably, manual testing is more suitable. 

- Test cases that require human intervention: Scenarios involving subjective evaluation (e.g., UI/UX, usability, exploratory testing) are better suited for manual testing.

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Creating a Simple Maven Project in Eclipse (Step-by-Step Guide)

🧰 Pre-Requisites (What You Need Before Starting)

1. Java JDK Installed
• Download and install the latest Java JDK from the official Oracle website.
• Ensure the `JAVA_HOME` environment variable is set correctly.
2. Eclipse IDE Installed
• Install the latest version of Eclipse IDE for Java Developers from official Eclipse website.
3. Internet Connection
• You’ll need an active internet connection during the setup to download dependencies and plugins.
4. TestNG Plugin (Optional, if using TestNG in Maven project)
• If you plan to use TestNG in your Maven project, install the TestNG plugin in Eclipse first.
• Follow this guide:
• How to Install TestNG in Eclipse (Step-by-Step)
• If already installed, you can skip this step.

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🚀 Steps to Create a Simple Maven Project in Eclipse

1. Open Eclipse IDE

2. Start a New Maven Project

    Go to: File → New → Maven Project

    (If you don’t see "Maven Project", go to `File` → `Other`, then search and select "Maven Project")

3. Project Configuration Window

• Leave the default settings (location and working set) as-is.
• Don’t check the “Create a simple project (skip archetype selection)” option.
• Click Next.

4. Select a Project Template (Archetype)

• Eclipse will take a few moments to load archetypes (templates).
• In the "Filter" box, type: `maven-archetype-quickstart`.
• Select this option from the list and click Next.

5. Enter Project Details

• Fill in the following fields:
• Group Id – your project group name (e.g., com.example)
• Artifact Id – your project name (e.g., my-first-project)
• Package – base package name (usually same as Group Id)
• Click Finish.

6. Project Creation in Progress

• Eclipse will download required files. This may take a minute.
• In the Console, if it asks “Confirm properties configuration”, just type `Y` and press Enter.

✅ Your Maven project is now created! You’ll see a standard Maven folder structure in your Project Explorer:

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Introduction to Apache Maven

🧩 What is Apache Maven?

Apache Maven is a project management and build automation tool for Java applications that is based on POM(Project Object Model). For testers, it’s incredibly helpful for:

• Managing test libraries and dependencies (like Selenium, TestNG, etc.)
• Running your test classes automatically
• Maintaining consistent environments across your team

Even if you don't write application code, Maven is your behind-the-scenes assistant in test automation.

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🧪 Why Should Testers Use Maven?

Here’s how Maven benefits testers:

1. Easy Dependency Management: Just define required libraries (like Selenium, TestNG) in a file called pom.xml, and Maven downloads them automatically.
2. Consistent Test Environment: It ensures the same versions of tools/libraries are used across your team or in CI/CD pipelines.
3. Integrates with Test Frameworks: Works smoothly with popular test tools like JUnit, TestNG, and Cucumber.
4. Supports Continuous Integration (CI): Easily integrate with tools like Jenkins, GitLab CI, or GitHub Actions for running tests automatically after every code change.
5. Standard Project Structure: Maven uses a standard directory layout which makes it easier to organize and understand test projects.

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🚀 Benefits of Using Maven in Eclipse

Here are the key benefits of using Maven (via Eclipse) for testers:

1. No More JAR Headaches: You don’t have to manually download and add JAR files. Maven downloads them automatically.
2. Project Setup is Simple: Maven comes with a standard project structure that makes organizing test files easier.
3. Smooth Integration with Test Frameworks: Maven supports tools like TestNG, JUnit, and Cucumber effortlessly.
4. Easy to Use in Eclipse: You can create, manage, and run Maven projects within Eclipse without using the command line.

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How to Install TestNG in Eclipse (Step-by-Step Guide)

Before you install TestNG in Eclipse, make sure you’ve set up the necessary software and tools. Here’s what you need:

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🔧 Pre-Requisites (What You Need First)

1. Java JDK Installed
1. Download and install the latest Java JDK.
2. Make sure the JAVA\_HOME environment variable is set correctly.
2. Eclipse IDE Installed
1. Install the latest version of Eclipse IDE for Java Developers from the official Eclipse website.
3. Internet Connection
1. An active internet connection is needed during the installation of the TestNG plugin.

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🚀 How to Install TestNG Plugin in Eclipse

By default, Eclipse does not come with built-in support for TestNG. You’ll need to install it manually using one of the two methods below:

🛒 Method 1: Install via Eclipse Marketplace (Recommended)

1. Open Eclipse IDE

2. Click on the top menu: Help → Eclipse Marketplace...

3. In the search box, type TestNG and press Enter.

4. Click the Install button next to the TestNG plugin.

5. When the confirmation window appears, click Confirm.

6. Accept the license agreement by selecting "I accept the terms..." and click Finish.

7. During installation, if a Trust dialog appears, click Select All → Trust Selected.

8. Once the installation completes, Eclipse may prompt you to restart —go ahead and restart it.

✅ After restart, you’ll be able to create TestNG classes easily in Eclipse.

🧰 Method 2: Install via "Install New Software…" (Manual Method)

1. In Eclipse, go to Help → Install New Software...

2. Click Add...

3. In the dialog box:

    Name: Type anything (e.g., `TestNG`)

    Location: Paste this URL

    ```

    https://testng.org/testng-eclipse-update-site

    ```

   * Then click Add

4. Select the checkbox for TestNG from the list.

5. Click Next, accept all terms and conditions, and then click Finish.

6. Approve any security prompts and complete the installation.

7. Restart Eclipse when prompted.

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🎉 You're Done!

After installation, you can:

* Create new TestNG classes

* Run tests using the TestNG framework

* View results in the TestNG results tab

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Getting Started with TestNG – A Beginner-Friendly Guide

What is TestNG?

    TestNG (Test Next Generation) is a powerful open-source testing framework designed for Java. It was developed by Cedric Beust in 2004, inspired by other testing frameworks like JUnit and NUnit.
    TestNG makes writing and running automated tests easier and more flexible. It's especially known for its annotations (like @Test, @BeforeMethod, @AfterClass, etc.) that help control how and when your tests run.
    Another great feature is the DataProvider, which allows you to perform data-driven testing—running the same test with multiple sets of data.

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Key Benefits of Using TestNG
Here’s why TestNG is a popular choice among developers and testers:
✅ Powerful Annotations
Easily manage your test setup and teardown using annotations like @BeforeMethod, @AfterMethod, @BeforeClass, and more.

✅ Flexible Test Configuration
You can create test suites, groups, priorities, and dependencies either in a simple XML file or using annotations. This helps you run selected tests and organize them however you need.

✅ Parallel Test Execution
Run multiple tests at the same time to save time—a big advantage when testing large applications.

✅ Detailed Reporting
TestNG automatically generates HTML and XML reports after running tests. You can also integrate with third-party tools like Allure or ExtentReports for advanced visual reports.

✅ Supports All Types of Testing
Whether it’s unit testing, functional testing, integration testing, or end-to-end testing, TestNG can handle it all.

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What You Need Before You Start with TestNG
Before diving into TestNG, it helps to have some background knowledge in the following areas:

📘 Basic Software Testing Concepts
Understand what test cases are, how testing works, and the types of testing (unit, integration, etc.).

☕ Java Programming Basics
Since TestNG is Java-based, you should know object-oriented programming, exception handling, and how to write simple Java code.

💻 Familiarity with IDEs
Use an Integrated Development Environment like Eclipse or IntelliJ IDEA, which offer built-in support or easy plugins for TestNG.

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