The testing pyramid in 2026: still useful, slightly reshaped
NEO Campus Editorial24 March 20266 min read
The classic pyramid still holds, but tools like Playwright, Vitest, and contract tests have changed the cost-benefit at each layer.
Integration is the new sweet spot
Fast component tests against a real DOM and a faked network catch most regressions for a fraction of the maintenance cost of E2E.
E2E for critical paths only
Reserve E2E tests for signup, checkout, and the two or three flows that absolutely cannot break. More than that becomes flaky and slow.
Contract tests for services
When teams own different services, contract tests prevent the integration breakages that no unit test will catch.
