{ "id": "PragmaticLoopReliabilityHarness2026", "name": "Test workflow reliability with deterministic fixtures", "nodes": [ { "parameters": { "content": "# Reliability test harness\n\nRun five synthetic fixtures through validation, in-run duplicate detection, bounded retry planning, human-review routing, and seven fail-closed checks. This educational workflow uses no credentials, makes no network request, and performs no external action. It is not a production idempotency store.", "height": 220, "width": 1460, "color": 5 }, "id": "c38b6bd0-12dd-4fae-baaa-37f132aa0a01", "name": "Overview - Read first", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 180, 80 ] }, { "parameters": { "content": "## 1. Run synthetic fixtures\n\nUse the manual trigger. The next node creates five local fixtures: success, duplicate, retryable, retry-exhausted, and invalid. No real customer or personal data is included.", "height": 220, "width": 500, "color": 3 }, "id": "c38b6bd0-12dd-4fae-baaa-37f132aa0a02", "name": "Step 1 - Synthetic fixtures", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 180, 340 ] }, { "parameters": { "content": "## 2. Validate and route\n\nRequired fields are checked first. Duplicate detection is deliberately limited to this one execution. Retryable fixtures receive only a planned next attempt; exhausted or invalid fixtures go to review.", "height": 220, "width": 500, "color": 4 }, "id": "c38b6bd0-12dd-4fae-baaa-37f132aa0a03", "name": "Step 2 - Validate and route", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 700, 340 ] }, { "parameters": { "content": "## 3. Verify before extending\n\nThe final nodes prove the expected 1 ready / 1 duplicate / 1 retry / 2 review distribution and zero side effects. Before adding a real integration, define authority, durable state, concurrency, retry limits, secrets, observability, and an accountable production owner.", "height": 220, "width": 500, "color": 2 }, "id": "c38b6bd0-12dd-4fae-baaa-37f132aa0a04", "name": "Step 3 - Verify before extending", "type": "n8n-nodes-base.stickyNote", "typeVersion": 1, "position": [ 1220, 340 ] }, { "parameters": {}, "id": "0f10aa5d-59f0-43a8-b4b7-0fe5f4f7d101", "name": "Run Reliability Fixtures", "type": "n8n-nodes-base.manualTrigger", "typeVersion": 1, "position": [ 260, 660 ] }, { "parameters": { "jsCode": "return [\n { json: { fixture: 'success', event_id: 'evt-100', idempotency_key: 'order-100', operation: 'sync_contact', simulate: 'success', attempt: 1, max_attempts: 3 } },\n { json: { fixture: 'duplicate', event_id: 'evt-101', idempotency_key: 'order-100', operation: 'sync_contact', simulate: 'success', attempt: 1, max_attempts: 3 } },\n { json: { fixture: 'retryable', event_id: 'evt-200', idempotency_key: 'order-200', operation: 'sync_contact', simulate: 'retryable', attempt: 1, max_attempts: 3 } },\n { json: { fixture: 'retry_exhausted', event_id: 'evt-300', idempotency_key: 'order-300', operation: 'sync_contact', simulate: 'retryable', attempt: 3, max_attempts: 3 } },\n { json: { fixture: 'invalid', event_id: 'evt-400', idempotency_key: 'order-400', operation: '', simulate: 'success', attempt: 1, max_attempts: 3 } }\n];" }, "id": "f53bd75c-3c94-4fa1-a5c9-83ee84dad102", "name": "Seed Five Fixtures", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 520, 660 ] }, { "parameters": { "jsCode": "const seen = new Set();\n\nreturn $input.all().map((item, index) => {\n const input = { ...item.json };\n const validationErrors = [];\n\n if (typeof input.event_id !== 'string' || !input.event_id.trim()) validationErrors.push('event_id_required');\n if (typeof input.operation !== 'string' || !input.operation.trim()) validationErrors.push('operation_required');\n if (!Number.isInteger(input.attempt) || input.attempt < 1) validationErrors.push('attempt_invalid');\n if (!Number.isInteger(input.max_attempts) || input.max_attempts < 1) validationErrors.push('max_attempts_invalid');\n\n const key = input.idempotency_key || input.event_id || `invalid-${index}`;\n const duplicate = seen.has(key);\n if (!duplicate) seen.add(key);\n\n let outcome = 'ready';\n let outcomeReason = 'validated_first_attempt';\n\n if (validationErrors.length > 0) {\n outcome = 'review';\n outcomeReason = 'validation_failed';\n } else if (duplicate) {\n outcome = 'duplicate';\n outcomeReason = 'idempotency_key_seen';\n } else if (input.simulate === 'retryable' && input.attempt < input.max_attempts) {\n outcome = 'retry';\n outcomeReason = 'bounded_retry_available';\n } else if (input.simulate === 'retryable') {\n outcome = 'review';\n outcomeReason = 'retry_budget_exhausted';\n }\n\n return {\n json: {\n ...input,\n idempotency_key: key,\n duplicate,\n validation_errors: validationErrors,\n outcome,\n outcome_reason: outcomeReason\n }\n };\n});" }, "id": "f3856897-6e9a-4bb3-b0cf-e205f588d103", "name": "Validate Dedupe and Route", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 800, 660 ] }, { "parameters": { "jsCode": "const actionMap = {\n ready: 'would_write_to_client_system',\n duplicate: 'suppress_duplicate',\n retry: 'schedule_bounded_retry',\n review: 'human_review'\n};\n\nreturn $input.all().map((item) => ({\n json: {\n ...item.json,\n planned_action: actionMap[item.json.outcome],\n next_attempt: item.json.outcome === 'retry' ? item.json.attempt + 1 : null,\n side_effect_executed: false,\n external_actions: 0,\n execution_capability: 'none'\n }\n}));" }, "id": "af7e276d-12d7-460f-b32f-015658f9d104", "name": "Plan Safe Actions Only", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1080, 660 ] }, { "parameters": { "jsCode": "const items = $input.all().map((item) => item.json);\nconst outcomeCounts = Object.fromEntries(['ready', 'duplicate', 'retry', 'review'].map((name) => [name, items.filter((item) => item.outcome === name).length]));\nconst sideEffectsExecuted = items.filter((item) => item.side_effect_executed).length;\nconst externalActions = items.reduce((total, item) => total + item.external_actions, 0);\nconst duplicateEffects = items.filter((item) => item.duplicate && item.side_effect_executed).length;\n\nconst checks = [\n ['five_fixtures', items.length === 5],\n ['one_ready', outcomeCounts.ready === 1],\n ['one_duplicate', outcomeCounts.duplicate === 1],\n ['one_retry', outcomeCounts.retry === 1],\n ['two_review', outcomeCounts.review === 2],\n ['zero_side_effects', sideEffectsExecuted === 0],\n ['zero_external_actions', externalActions === 0 && duplicateEffects === 0]\n];\nconst failed = checks.filter(([, passed]) => !passed).map(([name]) => name);\nif (failed.length > 0) throw new Error(`Invariant failure: ${failed.join(', ')}`);\n\nreturn [{\n json: {\n workflow: 'Test workflow reliability with deterministic fixtures',\n result: 'pass',\n runtime: 'n8n',\n fixture_count: items.length,\n outcome_counts: outcomeCounts,\n assertion_count: checks.length,\n duplicate_effects: duplicateEffects,\n side_effects_executed: sideEffectsExecuted,\n external_actions: externalActions,\n execution_capability: 'none'\n }\n}];" }, "id": "fd461f93-5479-4cc8-9a69-3769c111d105", "name": "Verify Seven Invariants", "type": "n8n-nodes-base.code", "typeVersion": 2, "position": [ 1360, 660 ] } ], "pinData": {}, "connections": { "Run Reliability Fixtures": { "main": [ [ { "node": "Seed Five Fixtures", "type": "main", "index": 0 } ] ] }, "Seed Five Fixtures": { "main": [ [ { "node": "Validate Dedupe and Route", "type": "main", "index": 0 } ] ] }, "Validate Dedupe and Route": { "main": [ [ { "node": "Plan Safe Actions Only", "type": "main", "index": 0 } ] ] }, "Plan Safe Actions Only": { "main": [ [ { "node": "Verify Seven Invariants", "type": "main", "index": 0 } ] ] } }, "active": false, "settings": { "executionOrder": "v1" }, "tags": [] }