Test-Driven Development Using Visual Studio and MSTest (4006) — Lesson 4: TDD Coding Challenge and Quality Review

Learning Objectives

• Complete multiple red-green-refactor cycles for a concise C# feature
• Review readability, independence, determinism, maintainability, and test value
• Document defects found, design improvements, and practical next TDD steps

Detailed Topics

• Complete multiple red-green-refactor cycles for a concise C# feature: Complete multiple red-green-refactor cycles for a concise C# feature
• Review readability: Review readability, independence, determinism, maintainability, and test value
• Document defects found: Document defects found, design improvements, and practical next TDD steps

Guided Demonstration

1. Review the requirement, environment, dependencies, roles, risks, and expected outcome.
2. Demonstrate the relevant configuration, analysis, code, or administration workflow step by step.
3. Capture settings, outputs, logs, screenshots, calculations, or test evidence.
4. Compare the observed result with the stated acceptance criteria.

Hands-On Activity

Deliver a tested C# component and complete a structured code-and-test review.

• Document assumptions and the planned sequence before making changes.
• Complete the activity and preserve evidence of normal and exception behavior.
• Record issues, corrective actions, and reusable operational or development notes.

Troubleshooting Focus

• Separate symptoms from causes and collect evidence before applying a fix.
• Check configuration, permissions, data, dependencies, capacity, connectivity, and recent changes.
• Validate rollback, recovery, support ownership, and user or business impact.

Validation Checklist

• The requirement and expected outcome are clear.
• The selected configuration, design, query, code, or process is documented.
• Normal, boundary, failure, security, and operational conditions are reviewed.
• The result is supported by evidence and the next improvement is prioritized.

Lesson Outcome

Learners can explain and apply TDD Coding Challenge and Quality Review in a realistic scenario and validate the result with documented evidence.