{ "policy": { "version": 5, "patterns": { "version": 1, "method": "CURATED_PRACTICE_TOPIC", "notice": "Pattern topics identify design choices to practice. Read the ticket's acceptance criteria and justify the simplest suitable approach. Tags are not capability or ownership evidence; an untagged ticket has no curated pattern topic assigned." }, "fieldMix": { "version": 1, "method": "CURATED_ESTIMATE", "notice": "Field percentages are editorial estimates of the ticket's engineering focus. They total 100%; they are not measured time, proficiency scores, or ownership evidence." }, "contentStatus": "PRACTICE_BRIEF", "assessmentStatus": "NOT_QUALIFIED", "evidenceUse": "NONE", "aiPolicy": "AI tools are welcome during implementation. Record assumptions, review the result, and verify its behavior.", "notice": "Fictional engineering practice briefs. Starter repositories, fixtures, automated grading, and verified ownership are not included.", "outcomeEvidence": "Tests, patches, and runbooks are requested deliverables. They become Outcome Evidence only through a qualified Mission and immutable Evidence IDs.", "ownershipEvidence": "Independent adaptation must be observed under a declared verification policy and cite immutable Evidence IDs. Completing a planning ticket establishes no Ownership Evidence." }, "patternTopics": [ { "id": "factory-method", "label": "Factory Method", "group": "Creational" }, { "id": "abstract-factory", "label": "Abstract Factory", "group": "Creational" }, { "id": "builder", "label": "Builder", "group": "Creational" }, { "id": "prototype", "label": "Prototype", "group": "Creational" }, { "id": "singleton", "label": "Singleton", "group": "Creational" }, { "id": "adapter", "label": "Adapter", "group": "Structural" }, { "id": "bridge", "label": "Bridge", "group": "Structural" }, { "id": "composite", "label": "Composite", "group": "Structural" }, { "id": "decorator", "label": "Decorator", "group": "Structural" }, { "id": "facade", "label": "Facade", "group": "Structural" }, { "id": "flyweight", "label": "Flyweight", "group": "Structural" }, { "id": "proxy", "label": "Proxy", "group": "Structural" }, { "id": "chain-of-responsibility", "label": "Chain of Responsibility", "group": "Behavioral" }, { "id": "command", "label": "Command", "group": "Behavioral" }, { "id": "interpreter", "label": "Interpreter", "group": "Behavioral" }, { "id": "iterator", "label": "Iterator", "group": "Behavioral" }, { "id": "mediator", "label": "Mediator", "group": "Behavioral" }, { "id": "memento", "label": "Memento", "group": "Behavioral" }, { "id": "observer", "label": "Observer", "group": "Behavioral" }, { "id": "state", "label": "State", "group": "Behavioral" }, { "id": "strategy", "label": "Strategy", "group": "Behavioral" }, { "id": "template-method", "label": "Template Method", "group": "Behavioral" }, { "id": "visitor", "label": "Visitor", "group": "Behavioral" }, { "id": "ports-and-adapters", "label": "Ports and Adapters", "group": "Architectural" }, { "id": "cqrs", "label": "CQRS", "group": "Architectural" }, { "id": "strangler-fig", "label": "Strangler Fig", "group": "Architectural" }, { "id": "saga", "label": "Saga", "group": "Distributed and reliability" }, { "id": "transactional-outbox", "label": "Transactional Outbox", "group": "Distributed and reliability" }, { "id": "circuit-breaker", "label": "Circuit Breaker", "group": "Distributed and reliability" }, { "id": "bulkhead", "label": "Bulkhead", "group": "Distributed and reliability" } ], "projects": [ { "id": "44e40751-208d-4c15-badf-8883cb027b99", "key": "BRELEASE", "title": "Risk-based release acceptance", "field": "Quality engineering", "summary": "Build a focused release gate for a checkout change with explicit coverage gaps.", "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.", "stack": [ "TypeScript", "Playwright", "PostgreSQL" ], "prerequisites": [ "Build a minimal local checkout fixture with synthetic prices, inventory, and a mock delivery provider." ], "developerValue": "Practice risk analysis, exploratory testing, and evidence-based release decisions.", "companyValue": "Provide a reviewable release assessment tied to customer-impacting invariants.", "delivery": "Deliver the acceptance suite, exploratory notes, and a local release rehearsal; no live transactions.", "phases": [ { "id": "scope", "title": "Scope release risk", "goal": "Translate the change into observable business invariants." }, { "id": "exercise", "title": "Exercise critical paths", "goal": "Test changed behavior and failure recovery." }, { "id": "decide", "title": "Prepare release review", "goal": "Report uncertainty and make rollback conditions explicit." } ], "tickets": [ { "id": "3e2cc852-35ea-4004-a772-5160f325c167", "key": "BRELEASE-101", "title": "Map delivery-option changes to checkout invariants", "type": "TASK", "priority": "MEDIUM", "difficulty": "FOUNDATIONAL", "estimateMinutes": 60, "phaseId": "scope", "dependsOn": [], "scenario": "The release checklist says 'test checkout' without defining what must remain true.", "acceptanceCriteria": [ "List total, inventory, address, and order-state invariants.", "Rank scenarios by impact and change exposure.", "Identify dependencies the local fixture cannot represent." ], "implementationNotes": [ "Keep priorities explainable without a composite quality score." ], "verification": [ "Trace one delivery change to affected invariants.", "Show an unrelated account setting outside this release scope." ], "deliverables": [ "Release risk map." ], "rollout": "Review the map before selecting tests; retain explicit uncovered risks.", "skills": [ "Risk analysis" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 100 } ], "patterns": [] }, { "id": "df9f820c-0a99-4022-aa62-7e85148b168c", "key": "BRELEASE-102", "title": "Create boundary partitions for delivery eligibility", "type": "TASK", "priority": "MEDIUM", "difficulty": "INTERMEDIATE", "estimateMinutes": 120, "phaseId": "scope", "dependsOn": [ "BRELEASE-101" ], "scenario": "Only ordinary postal codes are tested, while minimum basket size and service boundaries determine eligibility.", "acceptanceCriteria": [ "Partition valid, excluded, and malformed destinations.", "Cover basket thresholds below, at, and above the boundary.", "State the expected reason when no option is eligible." ], "implementationNotes": [ "Use fictional destinations and rates." ], "verification": [ "Exercise representative values from every partition.", "Reject malformed input without calling the mock provider." ], "deliverables": [ "Eligibility case table." ], "rollout": "Version the case table with the delivery rules.", "skills": [ "Boundary testing", "Test design" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 100 } ], "patterns": [] }, { "id": "fce92030-7ebd-4443-9ab6-f8252c76dd61", "key": "BRELEASE-103", "title": "Verify totals remain stable across delivery-option switching", "type": "BUG", "priority": "HIGH", "difficulty": "INTERMEDIATE", "estimateMinutes": 150, "phaseId": "exercise", "dependsOn": [ "BRELEASE-102" ], "scenario": "Changing options twice sometimes charges the first option while displaying the second.", "acceptanceCriteria": [ "Use the selected option consistently in displayed and submitted totals.", "Invalidate stale quotes when inputs change.", "Prevent submission while the current quote is unresolved." ], "implementationNotes": [ "Represent amounts in exact minor units." ], "verification": [ "Switch options rapidly and verify the final total.", "Resolve an old quote late and confirm it cannot overwrite selection." ], "deliverables": [ "Quote-race regression." ], "rollout": "Ship with the corrected quote binding; revert the option feature if totals diverge.", "skills": [ "Concurrency testing", "Numeric correctness" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 60 }, { "field": "Frontend", "percentage": 40 } ], "patterns": [] }, { "id": "99bcb76f-a4c9-4888-8f09-2dc562e89af8", "key": "BRELEASE-104", "title": "Test inventory reservation when checkout is abandoned", "type": "TASK", "priority": "HIGH", "difficulty": "ADVANCED", "estimateMinutes": 210, "phaseId": "exercise", "dependsOn": [ "BRELEASE-101" ], "scenario": "Reservations survive failed checkout and make available stock look sold out.", "acceptanceCriteria": [ "Expire abandoned reservations by the declared deadline.", "Preserve completed-order reservations.", "Make repeated expiry processing idempotent." ], "implementationNotes": [ "Control time and use only synthetic inventory." ], "verification": [ "Expire an abandoned reservation.", "Race completion with expiry and verify the chosen invariant." ], "deliverables": [ "Reservation lifecycle tests." ], "rollout": "Keep expiry processing observable; pause the changed flow if stock reconciliation fails.", "skills": [ "State transitions", "Concurrency" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 60 }, { "field": "Backend", "percentage": 40 } ], "patterns": [] }, { "id": "0b280dec-973e-4001-8dd2-19f8693b0847", "key": "BRELEASE-105", "title": "Check assistive-technology behavior for delivery errors", "type": "TASK", "priority": "HIGH", "difficulty": "INTERMEDIATE", "estimateMinutes": 150, "phaseId": "exercise", "dependsOn": [ "BRELEASE-102" ], "scenario": "Eligibility failures appear visually below the form but keyboard users receive no useful indication.", "acceptanceCriteria": [ "Associate errors with the relevant inputs.", "Move or announce focus consistently after failed submission.", "Preserve entered values for correction." ], "implementationNotes": [ "Use semantic HTML and owned accessible components." ], "verification": [ "Complete the flow using a keyboard.", "Trigger multiple errors and verify readable order and no focus trap." ], "deliverables": [ "Accessibility acceptance notes." ], "rollout": "Include these checks in the release smoke path; revert inaccessible validation changes.", "skills": [ "Accessibility", "Exploratory testing" ], "fieldMix": [ { "field": "Accessibility", "percentage": 50 }, { "field": "Quality engineering", "percentage": 50 } ], "patterns": [] }, { "id": "fa983c57-9f9f-4e5c-8a7a-eeeed15eb061", "key": "BRELEASE-106", "title": "Exercise partial provider failure without duplicating orders", "type": "TASK", "priority": "HIGH", "difficulty": "ADVANCED", "estimateMinutes": 240, "phaseId": "exercise", "dependsOn": [ "BRELEASE-103", "BRELEASE-104" ], "scenario": "The delivery provider accepts a booking but the checkout request times out.", "acceptanceCriteria": [ "Represent booking outcome as pending when confirmation is unknown.", "Retry using the same operation identity.", "Prevent a second order from the same confirmed submission." ], "implementationNotes": [ "Use a scripted provider double; send no external bookings." ], "verification": [ "Recover a timed-out accepted booking.", "Replay duplicate callbacks and verify one final order." ], "deliverables": [ "Partial-failure acceptance suite." ], "rollout": "Release behind a limited local cohort switch; stop new bookings if reconciliation is unhealthy.", "skills": [ "Failure testing", "Idempotency" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 50 }, { "field": "Distributed systems", "percentage": 30 }, { "field": "Integrations", "percentage": 20 } ], "patterns": [] }, { "id": "ab1ad063-7535-43b0-9983-571468871f06", "key": "BRELEASE-107", "title": "Run a structured exploratory session on edited addresses", "type": "TASK", "priority": "MEDIUM", "difficulty": "ADVANCED", "estimateMinutes": 180, "phaseId": "exercise", "dependsOn": [ "BRELEASE-105", "BRELEASE-106" ], "scenario": "Automated cases miss interactions between edited addresses, browser back navigation, and refreshed quotes.", "acceptanceCriteria": [ "Define a charter and a fixed session duration.", "Record observations, reproduction steps, and unresolved questions.", "Turn a discovered stable regression into one focused test." ], "implementationNotes": [ "Do not claim absence of defects from a time-boxed session." ], "verification": [ "Explore address edits during pending quotes.", "Verify an interrupted session leaves useful reproducible notes." ], "deliverables": [ "Exploratory session report." ], "rollout": "Use findings to update release risk; keep unknown behavior visible.", "skills": [ "Exploratory testing" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 80 }, { "field": "Frontend", "percentage": 20 } ], "patterns": [] }, { "id": "c0f2d49c-0714-4ac0-9189-65fb2564dc9e", "key": "BRELEASE-108", "title": "Assess a reduced regression suite against explicit omission risk", "type": "TASK", "priority": "HIGH", "difficulty": "EXPERT", "estimateMinutes": 300, "phaseId": "decide", "dependsOn": [ "BRELEASE-101", "BRELEASE-107" ], "scenario": "The team has thirty minutes for the release gate and cannot run every browser combination.", "acceptanceCriteria": [ "Select checks using the documented change and impact map.", "Compare runtime cost against omitted risk.", "Identify conditions that require the broader suite before release." ], "implementationNotes": [ "Declare device and browser coverage limits without inferring untested support." ], "verification": [ "Show coverage for every critical invariant.", "Introduce a high-impact uncovered path and force broader verification." ], "deliverables": [ "Release gate selection record." ], "rollout": "Use the reduced gate only within its declared scope; retain a broader fallback.", "skills": [ "Quality strategy", "Tradeoff analysis" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 100 } ], "patterns": [] }, { "id": "accb8e82-422e-4ca3-a470-feefc237433b", "key": "BRELEASE-109", "title": "Create a release evidence index with reproducible commands", "type": "CHORE", "priority": "MEDIUM", "difficulty": "FOUNDATIONAL", "estimateMinutes": 60, "phaseId": "decide", "dependsOn": [ "BRELEASE-108" ], "scenario": "Reviewers cannot distinguish current results from screenshots copied from an earlier build.", "acceptanceCriteria": [ "Bind results to fixture and application revisions.", "Link each risk to a check or explicit gap.", "Include exact local commands and outcomes." ], "implementationNotes": [ "Results are practice artifacts, not ownership claims." ], "verification": [ "Reproduce one indexed result.", "Detect a result whose revision differs from the release candidate." ], "deliverables": [ "Release evidence index." ], "rollout": "Regenerate the index after candidate changes; keep previous reports append-only.", "skills": [ "Provenance", "Documentation" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 80 }, { "field": "Developer tooling", "percentage": 20 } ], "patterns": [] }, { "id": "08a18d4e-a7e2-4f88-b815-3304cfe38e03", "key": "BRELEASE-110", "title": "Rehearse rollback when delivery quotes become inconsistent", "type": "TASK", "priority": "HIGH", "difficulty": "ADVANCED", "estimateMinutes": 210, "phaseId": "decide", "dependsOn": [ "BRELEASE-106", "BRELEASE-109" ], "scenario": "The rollback plan restores code but says nothing about orders already using the new delivery model.", "acceptanceCriteria": [ "Define a measurable stop condition for quote inconsistency.", "Preserve completed orders and reconcile pending bookings.", "Verify the old application can read retained order records." ], "implementationNotes": [ "Do not delete accepted transactions to simplify recovery." ], "verification": [ "Roll back after a synthetic completed and pending order.", "Verify unsupported records trigger a reviewed repair path." ], "deliverables": [ "Rollback rehearsal and data compatibility report." ], "rollout": "Gate release on the rehearsal; prefer disabling new bookings while reconciling pending work.", "skills": [ "Release recovery", "Data compatibility" ], "fieldMix": [ { "field": "Quality engineering", "percentage": 40 }, { "field": "Platform engineering", "percentage": 30 }, { "field": "Database engineering", "percentage": 30 } ], "patterns": [] } ] } ] }