Ringdev Chaos Testing

Dev Chaos Testing (Gate 7)

Overview

Ensure code handles failure conditions gracefully by injecting faults using Toxiproxy. Verify connection loss, latency, and network partitions don't cause crashes.

Core principle: All infrastructure fails. Chaos testing ensures your code handles it gracefully.

CRITICAL: Role Clarification

This skill ORCHESTRATES. QA Analyst Agent (chaos mode) EXECUTES.

Standards Reference

MANDATORY: Load testing-chaos.md standards via WebFetch.

Step 0: Detect External Dependencies (Auto-Detection)

MANDATORY: When external_dependencies is empty or not provided, scan the codebase to detect them automatically before validation.

if external_dependencies is empty or not provided:

  detected_dependencies = []

  1. Scan docker-compose.yml / docker-compose.yaml for service images:
     - Grep tool: pattern "postgres" in docker-compose* files → add "postgres"
     - Grep tool: pattern "mongo" in docker-compose* files → add "mongodb"
     - Grep tool: pattern "valkey" in docker-compose* files → add "valkey"
     - Grep tool: pattern "redis" in docker-compose* files → add "redis"
     - Grep tool: pattern "rabbitmq" in docker-compose* files → add "rabbitmq"

  2. Scan dependency manifests:
     if language == "go":
       - Grep tool: pattern "github.com/lib/pq" in go.mod → add "postgres"
       - Grep tool: pattern "github.com/jackc/pgx" in go.mod → add "postgres"
       - Grep tool: pattern "go.mongodb.org/mongo-driver" in go.mod → add "mongodb"
       - Grep tool: pattern "github.com/redis/go-redis" in go.mod → add "redis"
       - Grep tool: pattern "github.com/valkey-io/valkey-go" in go.mod → add "valkey"
       - Grep tool: pattern "github.com/rabbitmq/amqp091-go" in go.mod → add "rabbitmq"

     if language == "typescript":
       - Grep tool: pattern "\"pg\"" in package.json → add "postgres"
       - Grep tool: pattern "@prisma/client" in package.json → add "postgres"
       - Grep tool: pattern "\"mongodb\"" in package.json → add "mongodb"
       - Grep tool: pattern "\"mongoose\"" in package.json → add "mongodb"
       - Grep tool: pattern "\"redis\"" in package.json → add "redis"
       - Grep tool: pattern "\"ioredis\"" in package.json → add "redis"
       - Grep tool: pattern "@valkey" in package.json → add "valkey"
       - Grep tool: pattern "\"amqplib\"" in package.json → add "rabbitmq"
       - Grep tool: pattern "amqp-connection-manager" in package.json → add "rabbitmq"

  3. Deduplicate detected_dependencies
  4. Set external_dependencies = detected_dependencies

  Log: "Auto-detected external dependencies: [detected_dependencies]"

Step 1: Validate Input

REQUIRED INPUT:
- unit_id: [task/subtask being tested]
- external_dependencies: [postgres, mongodb, valkey, redis, rabbitmq, etc.] (from input OR auto-detected in Step 0)
- language: [go|typescript]

OPTIONAL INPUT:
- gate6_handoff: [full Gate 6 output]

if any REQUIRED input is missing:
  → STOP and report: "Missing required input: [field]"

if external_dependencies is empty (AFTER auto-detection in Step 0):
  → STOP and report: "No external dependencies found after codebase scan - chaos testing requires dependencies"

Step 2: Dispatch QA Analyst Agent (Chaos Mode)

Task tool:
  subagent_type: "ring:qa-analyst"
  prompt: |
    **MODE:** CHAOS TESTING (Gate 7)

    **Standards:** Load testing-chaos.md

    **Input:**
    - Unit ID: {unit_id}
    - External Dependencies: {external_dependencies}
    - Language: {language}

    **Requirements:**
    1. Setup Toxiproxy infrastructure in tests/utils/chaos/
    2. Create chaos tests (TestIntegration_Chaos_{Component}_{Scenario} naming)
    3. Use dual-gate pattern (CHAOS=1 env + testing.Short())
    4. Test failure scenarios: Connection Loss, High Latency, Network Partition
    5. Verify 5-phase structure: Normal → Inject → Verify → Restore → Recovery

    **Output Sections Required:**
    - ## Chaos Testing Summary
    - ## Failure Scenarios
    - ## Handoff to Next Gate

Step 3: Evaluate Results

Parse agent output:

if "Status: PASS" in output:
  → Gate 7 PASSED
  → Return success with metrics

if "Status: FAIL" in output:
  → Dispatch fix to implementation agent
  → Re-run chaos tests (max 3 iterations)
  → If still failing: ESCALATE to user

Step 4: Generate Output

## Chaos Testing Summary
**Status:** {PASS|FAIL}
**Dependencies Tested:** {count}
**Scenarios Tested:** {count}
**Recovery Verified:** {Yes|No}

## Failure Scenarios
| Component | Scenario | Status | Recovery |
|-----------|----------|--------|----------|
| {component} | {scenario} | {PASS|FAIL} | {Yes|No} |

## Handoff to Next Gate
- Ready for Gate 8 (Code Review): {YES|NO}
- Iterations: {count}

Failure Scenarios by Dependency

Severity Calibration

Report all severities. CRITICAL = immediate fix (production risk). HIGH = fix before gate pass. MEDIUM = fix in iteration. LOW = document.

Anti-Rationalization Table

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