Intro

Development practices are the habits and processes that keep software shippable: testing, reviews, refactoring, and feedback loops. Most teams do not fail because of syntax; they fail because quality work is not systematic. Example: a small investment in CI and code review prevents entire classes of regressions from reaching production.

Questions

How much testing is enough, and what kind?

• Match the test to the risk: unit tests for logic-heavy code, integration tests for wiring and boundaries, a few end-to-end tests for critical user paths — not 100% coverage for its own sake
• The test pyramid is a cost model: many fast unit tests, fewer slow integration tests, minimal brittle E2E — inverting it makes the suite slow and flaky
• TDD is a design tool as much as a verification one: writing the test first pressures you toward decoupled, testable code
• A test that never fails teaches nothing; a test that fails randomly teaches you to ignore it — invest in determinism

References

• The Pragmatic Programmer (Hunt & Thomas) — practitioner guide to the habits that keep software maintainable.
• Continuous Integration (Martin Fowler) — the foundational article on CI and the fast-feedback discipline behind it.
• Refactoring (Martin Fowler) — the reference on safe, incremental code improvement backed by tests.