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Supersedes 0069. Amends 0022 (test-file naming).

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Context

0069 (Proposed) set one test level and coverage floors. The owner’s answers TS1 to TS18 (mem L358, L480–483, 2026-10-20) add tiers, infrastructure and policies.

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Decision

  1. Tiers (TS1 and TS2). Five tiers are marked by filename infix: .int, .contract, .e2e and .load, with the unit tier unmarked. The turbo tasks are test, test:int, test:contract and test:e2e.
  2. Coverage (TS3). Floors are 80% lines and 70% branches. Security, tenancy, IAM, actions, outbox, workflow, versioning, validation and licensing need 90% and 80%. Services join the coverage task.
  3. Infrastructure (TS4 and TS5). Testcontainers with one schema per test file. Logic is tested on plain TypeScript packages with vitest and Testcontainers. A thin Encore test suite covers the wiring.
  4. Policies (TS6 to TS15 and TS18). Generated isolation tests, oasdiff contract checks, an ephemeral end-to-end stack, the tier matrix, weekly k6 load tests, fault injection, Playwright screenshots, a device matrix, factories, a flaky-test quarantine, and an air-gap job with no network (--network none).
  5. Carried forward. Maestro on GitHub runners (0069).

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Consequences

  • A test’s tier is in its filename, so CI can run each tier on its own schedule.
  • Coverage floors are per package group, so the security code is held to the higher floor.

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Enforcement

planned — pnpm validate checks that each test file name has a known tier infix, and the turbo tasks run each tier.

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Open questions

  1. The device matrix (TS18) needs real devices; the owner must choose which ones.

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Alternatives

  • One test level with one floor: superseded by the tier split.

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Supersedes and sources

Supersedes: 0069. Amends: 0022. Sources: owner answers TS1–TS18 (stackra-decisions-2026-10-19.md L358, L480–483, 2026-10-20). Closes gaps B39, B40, C21 and C26.