Testability Sales Pitch
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The document discusses the advantages of prioritizing testability in software development, which leads to increased deployment frequency, improved team collaboration, and early detection of issues. A testable system fosters better documentation, transparency, and shared knowledge within teams, reducing reliance on individual expertise and facilitating agility in making changes. Overall, emphasizing testability enhances system stability, observability, and ultimately supports informed product decisions.
Testability Sales Pitch
- 1. Benefits of a Testability Focus Perceived Need – Delivery, Flow Lead Time – code commit to deploy to Production Deployment Frequency – more frequent deployments with smaller batch size Perceived Need – Stability, Resilience Mean Time to Recovery – time to recover from a Production failure Change Fail % – deployments requiring roll back or fix Easier to test means finding important problems earlier, rather than just before important decision points. A testable system is more decomposable, easier to break down into smaller stories. No more long backlog sessions on how to split stories. If the system is more testable, more team members will be able and want to test it. No more "testing bottleneck” holding the whole team back. Greater observability helps us to see problems before they manifest. Observe system changes and investigate, rather than only seeing causes. More roles within the team are willing to be support the system. Not only developers who end up on call, which promotes team harmony. Reduction or removal of release testing phases as early testing is much more effective. Much less repetition of testing. Better relationships with the teams and interfaces that you depend on. If your dependencies are hard to test, it constrains your testing. Reduce dependence on individuals who hold key knowledge. Testability encourages sharing, documentation and transparent team decision making. Refactoring becomes standard, as you have a balanced test strategy to cover you. Fewer performance-based surprises especially. Diagnose and triage the lists of defects that have built up over time. Less sorting and ranking in backlog grooming. Quick to prove problems still exist. Remove test environments that don’t enable the testing you need. Get your pipeline to mirror your test strategy. Think about how to test and support your architecture early and often. Testing and ops are closely aligned, they value uptime and resilience. Translate incidents into actionable information on how and what you test. Test where it matters most by refreshing stale test strategies. Testable systems mean more of the most effective testing but can mean less spend on testing overall. Reduce the areas of the system where teams fear to make changes. You can make changes when you want and need to. Information from testing helps with present and future product decisions. Build more of the right thing based on reality not claims and assumptions. Cleaner interfaces and versioning help with customer integration. Testability encourages clean interfaces between systems requiring less support. Testability leads to a balanced test strategy. More focus on security and performance testing as the system becomes more observable and controllable.