Test-First Development Skill Test-First Development (TDD) ensures that code is written to satisfy specific, predefined requirements, leading to higher quality and better design. TDD Workflow 1. Red : Write a failing test for a small piece of functionality. 2. Green : Write the minimum amount of code required to make the test pass. 3. Refactor : Clean up the code while ensuring the tests remain green. Test Design Principles 1. Comprehensive Coverage - Normal Cases : Test the expected "happy path" behavior. - Boundary Values : Test inputs at the edges of valid ranges (e.g., 0, max int, empty st…