Assess a reduced regression suite against explicit omission risk
The team has thirty minutes for the release gate and cannot run every browser combination.
- Focused work estimate
- 5h + prerequisites
- Priority in the scenario
- High
- Engineering practice
- Quality strategy · Tradeoff analysis
Estimated field mix
- Quality engineering100%
Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence.
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Project context
A fictional retailer is changing delivery options. Its regression suite is large, but no one can explain whether inventory, totals, or recovery behavior is covered.
Setup prerequisites
- Build a minimal local checkout fixture with synthetic prices, inventory, and a mock delivery provider.
Preceding work
Complete these dependencies, or supply their agreed outputs before taking this ticket.
- BRELEASE-101 · Map delivery-option changes to checkout invariants
- BRELEASE-102 · Create boundary partitions for delivery eligibility
- BRELEASE-105 · Check assistive-technology behavior for delivery errors
- BRELEASE-103 · Verify totals remain stable across delivery-option switching
- BRELEASE-104 · Test inventory reservation when checkout is abandoned
- BRELEASE-106 · Exercise partial provider failure without duplicating orders
- BRELEASE-107 · Run a structured exploratory session on edited addresses
Acceptance criteria
- Select checks using the documented change and impact map.
- Compare runtime cost against omitted risk.
- Identify conditions that require the broader suite before release.
Implementation constraints
- Declare device and browser coverage limits without inferring untested support.
Verification to include
- Show coverage for every critical invariant.
- Introduce a high-impact uncovered path and force broader verification.
Deliverables
- Release gate selection record.
Rollout and recovery
Use the reduced gate only within its declared scope; retain a broader fallback.
Value of the work
For the engineer: Practice risk analysis, exploratory testing, and evidence-based release decisions.
For the team: Provide a reviewable release assessment tied to customer-impacting invariants.
Evidence boundaries
Outcome Evidence: Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.
Ownership Evidence: Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence.