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Test-Driven Development

Explore how to apply the test-driven development (TDD) approach to unit testing. Learn to write minimal application code to allow test compilation, develop failing tests first, and iteratively implement code until tests pass. Understand overcoming common challenges in TDD, such as designing interfaces and refining implementations for effective testing with NUnit.

Introduction

Software code is split into two parts— application code implements the actual software features and test code includes the tests that test the behavior of the application code. There are two ways to approach writing test code. One involves writing test code after application code, known as the test after development approach. This approach is ...