Skip to main content

How Testers Validate Functionality

In a CDD system, testing isn't just a phase — it's integrated into the communication protocols that govern how the system behaves. Testers participate by validating not only outcomes but also the contexts that lead to those outcomes.

Role Overview​

  • Validate expected behavior through observable state changes.
  • Define and automate test cases based on communication patterns.
  • Detect regressions by monitoring event flows and context mutations.

Testers in the CDD Workflow​

CDD enables testers to focus on why something happens, not just what happens. Since the system is built around context propagation and event triggers, testers can inspect and verify how different roles and modules interact across boundaries.

Key tester contributions include:

  • Writing test cases that simulate real-world context flows.
  • Observing event logs or system snapshots to identify inconsistent behavior.
  • Collaborating with developers to define testable interfaces and feedback loops.
  • Creating mock contexts to reproduce edge cases and failure scenarios.

Benefits for Testers​

  • Better visibility into how the system reacts under different scenarios.
  • Easier automation via shared event structures and protocols.
  • Closer alignment with PMs and developers through context-aware test plans.
  • The ability to test early — even before UI or backend is complete — using mock protocols.

Testing in CDD is about validating communication, not just final output.