🧪 Web Testing and Web Maintenance (Web Engineering)

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🧪 1. Web Testing

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📌 1.1 Definition

Web Testing is the process of checking a web application to ensure it is:

• Functionally correct
• Secure
• Fast and reliable
• Compatible with different browsers and devices

👉 It helps to find bugs, errors, and performance issues before deployment.

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🎯 1.2 Objectives of Web Testing

• Ensure correct functionality
• Improve user experience
• Detect security vulnerabilities
• Ensure cross-browser compatibility
• Check performance and load handling

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🧠 1.3 Types of Web Testing

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1. ⚙️ Functional Testing

📌 Definition

Checks whether all functions work correctly.

✅ Example

• Login form validation
• Search functionality

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2. 🌐 Usability Testing

📌 Definition

Checks how easy and user-friendly the website is.

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3. 📱 Compatibility Testing

📌 Definition

Ensures website works on:

• Different browsers (Chrome, Firefox, Edge)
• Different devices (mobile, tablet, desktop)

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4. ⚡ Performance Testing

📌 Definition

Checks speed, response time, and load handling.

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5. 🔐 Security Testing

📌 Definition

Ensures protection against:

• SQL Injection
• XSS attacks
• Unauthorized access

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6. 📊 Load Testing

📌 Definition

Checks system behavior under expected user load.

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7. 💥 Stress Testing

📌 Definition

Checks system behavior under extreme load conditions.

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📊 1.4 Web Testing Process Diagram

Requirement Analysis
       ↓
Test Planning
       ↓
Test Case Design
       ↓
Test Execution
       ↓
Bug Reporting
       ↓
Re-testing

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📈 1.5 Advantages of Web Testing

• Improves quality of web application
• Reduces bugs and errors
• Enhances security
• Better user experience
• Ensures reliability

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❌ 1.6 Disadvantages

• Time-consuming
• Expensive
• Requires skilled testers
• Complex for large systems

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🔧 2. Web Maintenance

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📌 2.1 Definition

Web Maintenance is the process of updating, improving, and fixing a web application after deployment to ensure it continues to function properly.

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🎯 2.2 Objectives of Web Maintenance

• Fix bugs after deployment
• Improve performance
• Update content and features
• Enhance security
• Ensure system stability

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🧠 2.3 Types of Web Maintenance

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1. 🛠️ Corrective Maintenance

• Fixing errors and bugs
• Example: broken login system

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2. 🔄 Adaptive Maintenance

• Updating system for new environments
• Example: browser updates, OS updates

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3. ⚡ Perfective Maintenance

• Improving performance or features
• Example: faster loading website

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4. 🧩 Preventive Maintenance

• Preventing future problems
• Example: security patches

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📊 2.4 Maintenance Cycle Diagram

Deploy Website
      ↓
Monitor System
      ↓
Detect Issues
      ↓
Fix/Update System
      ↓
Improve Performance
      ↓
Repeat

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📈 2.5 Advantages of Web Maintenance

• Keeps website updated
• Improves security
• Enhances performance
• Fixes bugs
• Improves user satisfaction

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❌ 2.6 Disadvantages

• Requires continuous effort
• Increases cost
• Needs technical expertise
• May cause downtime during updates

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⚖️ 3. Web Testing vs Web Maintenance

Feature	Web Testing 🧪	Web Maintenance 🔧
Stage	Before deployment	After deployment
Purpose	Find bugs	Fix and improve system
Focus	Quality assurance	System improvement
Activity	Testing & debugging	Updating & repairing

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⚠️ 4. Important Exam Points

✔ Web testing ensures error-free deployment ✔ Web maintenance ensures long-term functionality ✔ Both are essential for web application lifecycle ✔ Testing is pre-release, maintenance is post-release

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❓ 5. Likely Exam Questions

Short Questions

1. Define web testing.
2. What is web maintenance?
3. Name types of web testing.
4. What is corrective maintenance?
5. Difference between testing and maintenance.

Long Questions

6. Explain web testing process with diagram.
7. Discuss types of web testing.
8. Explain web maintenance and its types.
9. Compare web testing and web maintenance.
10. Explain importance of testing and maintenance in web applications.

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📝 6. Summary / Quick Revision

• Web Testing = checking website before release

• Web Maintenance = improving website after release

• Testing types:

  • Functional
  • Security
  • Performance

• Maintenance types:

  • Corrective
  • Adaptive
  • Preventive
  • Perfective

👉 In short: Testing ensures a website is correct, and maintenance ensures it stays correct and updated over time.

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