tdd-workflow

Test-driven development for Apex and LWC follows the red-green-refactor cycle: write a failing test first, implement the minimum code to pass, then refactor. This approach covers triggers, service layers, and Lightning Web Components with concrete examples.

Yes, TDD unit tests can scale from single records to 200+ bulk scenarios in Salesforce. The workflow demands guardrails like bulk-safe queries and fail-fast tests to ensure your Apex code handles large data volumes securely.

Apex test classes should enforce security constraints using security-enforcement patterns. The TDD workflow demands these guardrails alongside bulk-safe queries and fail-fast tests to ensure your Salesforce code meets strict quality and security standards.

The TDD workflow supports both Lightning Web Components and Apex code. It provides a full cycle methodology including red-green-refactor examples, test setup, and iterative refinement for LWC projects, triggers, and service layers.

Test coverage is a byproduct of proper TDD, not the primary goal. Writing failing tests first and implementing only enough production code to pass ensures quality, whereas simply chasing coverage numbers often fails to improve actual code behavior.

The red-green-refactor cycle is a test-driven development practice where you write a failing test first, implement the minimum production code to pass it, then refactor. It provides a structured methodology for iterative refinement in Apex and LWC projects.